update examples to standard lammps conventions

This commit is contained in:
Colin Denniston
2022-03-09 18:13:45 -05:00
parent 3c3912aff2
commit 888db4b0ef
46 changed files with 3701 additions and 178416 deletions

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@ -19,7 +19,7 @@ units micro
dimension 3
boundary p p f
atom_style molecular
read_data ../confinedcolloids.dat
read_data confinedcolloids.dat
mass * 0.00010287
@ -102,4 +102,5 @@ fix walllo ForceAtoms wall/lj126 zlo 0.0 20.0 0.8071542386 0.906 units box
thermo 50
run 400
#run 400
run 100

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@ -0,0 +1,190 @@
LAMMPS (17 Feb 2022)
#===========================================================================#
# System of colloidal particles under shear. #
# #
# Run consists of 10x12x4 particles, each composed of 3613 particle nodes #
# (3612 particles forming a spherical shell, and 1 central particle). #
# 280 x 280 x 101 lattice-Boltzmann grid sites. #
# #
# This simulation is used to illustrate the simulation time of a realistic #
# implementation of the lb/fluid fix. #
# The data file "confinedcolloids.dat" is quite large and so is not #
# included here. It can be obtained from: #
# http://publish.uwo.ca/~cdennist/confinedcolloids.dat.gz #
# #
# Sample output from this run can be found in the file: #
# results64.out #
#===========================================================================#
units micro
dimension 3
boundary p p f
atom_style molecular
read_data confinedcolloids.dat
Reading data file ...
orthogonal box = (0 0 0) to (16.8 16.8 6)
2 by 2 by 1 MPI processor grid
reading atoms ...
1734240 atoms
Finding 1-2 1-3 1-4 neighbors ...
special bond factors lj: 0 0 0
special bond factors coul: 0 0 0
0 = max # of 1-2 neighbors
0 = max # of 1-3 neighbors
0 = max # of 1-4 neighbors
1 = max # of special neighbors
special bonds CPU = 0.372 seconds
read_data CPU = 34.950 seconds
mass * 0.00010287
#----------------------------------------------------------------------------
# Need a neighbor bin size smaller than the lattice-Boltzmann grid spacing
# to ensure that the particles belonging to a given processor remain inside
# that processors lattice-Boltzmann grid.
# The arguments for neigh_modify have been set to "delay 0 every 1", again
# to ensure that the particles belonging to a given processor remain inside
# that processors lattice-Boltzmann grid. However, these values can likely
# be somewhat increased without issue. If a problem does arise (a particle
# is outside of its processors LB grid) an error message is printed and
# the simulation is terminated.
#----------------------------------------------------------------------------
neighbor 0.03 bin
neigh_modify delay 0 every 1
neigh_modify exclude type 2 2
neigh_modify exclude type 2 1
#----------------------------------------------------------------------------
# ForceAtoms are the particles at the center of each colloidal object which
# do not interact with the fluid, but are used to implement the hard-sphere
# interactions.
#----------------------------------------------------------------------------
group ForceAtoms type 1
480 atoms in group ForceAtoms
#----------------------------------------------------------------------------
# FluidAtoms are the particles representing the surface of the colloidal
# object which do interact with the fluid.
#----------------------------------------------------------------------------
group FluidAtoms type 2
1733760 atoms in group FluidAtoms
#----------------------------------------------------------------------------
# Implement a hard-sphere interaction between the particles at the center of
# each colloidal object (use a truncated and shifted Lennard-Jones
# potential).
#----------------------------------------------------------------------------
pair_style lj/cut 1.572
pair_coeff * * 0.0 0.0 1.572
pair_coeff 1 1 10.0 1.400492785 1.572
pair_modify shift yes
timestep 0.001
#---------------------------------------------------------------------------
# Create a lattice-Boltzmann fluid covering the simulation domain.
# This fluid feels a force due to the particles specified through FluidAtoms
# (however, this fix does not explicitly apply a force back on to these
# particles...this is accomplished through the use of the lb/viscous fix).
# Use a fluid density = 1.0, fluid viscosity = 1.0, (water at STP) and a
# lattice spacing dx=0.06.
# Implement top/bottomw walls moving at speeds of 20.0 in opposite directions
#----------------------------------------------------------------------------
fix 1 FluidAtoms lb/fluid 1 1.0 1.0 dx 0.06 zwall_velocity -20.0 20.0
Using a lattice-Boltzmann grid of 280 by 280 by 101 total grid points. (../fix_lb_fluid.cpp:486)
Local Grid Geometry created. (../fix_lb_fluid.cpp:1018)
#----------------------------------------------------------------------------
# Apply the force due to the fluid onto the FluidAtoms particles (again,
# these atoms represent the surface of the colloidal object, which should
# interact with the fluid).
#----------------------------------------------------------------------------
fix 2 FluidAtoms lb/viscous
#----------------------------------------------------------------------------
# Each colloidal object (spherical shell of particles and central particle)
# is specified as a separate molecule in the confinedcolloids.dat data
# file. Integrate the motion of each of these sets of particles as rigid
# objects which move and rotate together.
#----------------------------------------------------------------------------
fix 3 all rigid molecule
480 rigid bodies with 1734240 atoms
#----------------------------------------------------------------------------
# Implement a repulsive interaction between the ForceAtoms particles, and the
# upper and lower z-walls. (A truncated and shifted Lennard-Jones potential
# is used).
#----------------------------------------------------------------------------
fix wallhi ForceAtoms wall/lj126 zhi 5.88 20.0 0.8071542386 0.906 units box
fix walllo ForceAtoms wall/lj126 zlo 0.0 20.0 0.8071542386 0.906 units box
#dump ParticleTracking ForceAtoms custom 50 test.track id mol x y z vx vy vz
thermo 50
#run 400
run 100
CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE
Your simulation uses code contributions which should be cited:
- fix lb/fluid command:
@Article{Denniston et al.,
author = {C. Denniston, N. Afrasiabian, M.G. Cole-Andre,F.E. Mackay, S.T.T. Ollila, T. Whitehead},
title = {LAMMPS lb/fluid fix version 2: Improved Hydrodynamic Forces Implemented into LAMMPS through a lattice-Boltzmann fluid}, journal = {Comp.~Phys.~Comm.},
year = 2022,
volume = 275,
pages = {108318}
}
CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE
generated 0 of 1 mixed pair_coeff terms from geometric mixing rule
Neighbor list info ...
update every 1 steps, delay 0 steps, check yes
max neighbors/atom: 2000, page size: 100000
master list distance cutoff = 1.602
ghost atom cutoff = 1.602
binsize = 0.801, bins = 21 21 8
1 neighbor lists, perpetual/occasional/extra = 1 0 0
(1) pair lj/cut, perpetual
attributes: half, newton on
pair build: half/bin/newton
stencil: half/bin/3d
bin: standard
Per MPI rank memory allocation (min/avg/max) = 373.3 | 373.3 | 373.3 Mbytes
Step Temp E_pair E_mol TotEng Press
0 0 0 0 0 0
50 4511970.8 0 0 89.610701 0.21526205
100 16113793 0 0 320.0305 -0.54714356
Loop time of 2168.87 on 4 procs for 100 steps with 1734240 atoms
Performance: 3983.646 ns/day, 0.006 hours/ns, 0.046 timesteps/s
99.9% CPU use with 4 MPI tasks x no OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 0.67377 | 0.70143 | 0.72779 | 2.5 | 0.03
Bond | 4.19e-05 | 6.0825e-05 | 7.85e-05 | 0.0 | 0.00
Neigh | 1978.7 | 1982.4 | 1985.9 | 6.3 | 91.40
Comm | 9.4132 | 12.886 | 16.538 | 78.3 | 0.59
Output | 0.0089264 | 0.016853 | 0.024638 | 4.3 | 0.00
Modify | 171.19 | 171.23 | 171.27 | 0.3 | 7.89
Other | | 1.598 | | | 0.07
Nlocal: 433560 ave 433560 max 433560 min
Histogram: 4 0 0 0 0 0 0 0 0 0
Nghost: 397888 ave 397888 max 397888 min
Histogram: 4 0 0 0 0 0 0 0 0 0
Neighs: 60 ave 60 max 60 min
Histogram: 4 0 0 0 0 0 0 0 0 0
Total # of neighbors = 240
Ave neighs/atom = 0.00013838915
Ave special neighs/atom = 0
Neighbor list builds = 16
Dangerous builds = 0
Total wall time: 0:39:00

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@ -1,83 +0,0 @@
LAMMPS (29 Sep 2021 - Update 1)
Reading data file ...
orthogonal box = (0.0000000 0.0000000 0.0000000) to (16.800000 16.800000 6.0000000)
4 by 8 by 2 MPI processor grid
reading atoms ...
1734240 atoms
Finding 1-2 1-3 1-4 neighbors ...
special bond factors lj: 0 0 0
special bond factors coul: 0 0 0
0 = max # of 1-2 neighbors
0 = max # of 1-3 neighbors
0 = max # of 1-4 neighbors
1 = max # of special neighbors
special bonds CPU = 0.018 seconds
read_data CPU = 1.916 seconds
480 atoms in group ForceAtoms
1733760 atoms in group FluidAtoms
Using a lattice-Boltzmann grid of 280 by 280 by 101 total grid points. (../fix_lb_fluid.cpp:477)
Local Grid Geometry created. (../fix_lb_fluid.cpp:1023)
First Run initialized
480 rigid bodies with 1734240 atoms
Neighbor list info ...
update every 1 steps, delay 0 steps, check yes
max neighbors/atom: 2000, page size: 100000
master list distance cutoff = 1.602
ghost atom cutoff = 1.602
binsize = 0.801, bins = 21 21 8
1 neighbor lists, perpetual/occasional/extra = 1 0 0
(1) pair lj/cut, perpetual
attributes: half, newton on
pair build: half/bin/newton
stencil: half/bin/3d
bin: standard
Setting up Verlet run ...
Unit style : micro
Current step : 0
Time step : 0.001
Per MPI rank memory allocation (min/avg/max) = 97.31 | 97.33 | 97.36 Mbytes
Step Temp E_pair E_mol TotEng Press
0 0 0 0 0 0
50 4511970.8 0 0 89.610701 0.21526205
100 16113793 0 0 320.0305 -0.54714356
150 31550748 67.191512 0 693.81006 1.2310415
200 46439326 498.87168 0 1421.1872 4.0383841
250 61684647 1043.9263 0 2269.0239 6.4736851
300 80760268 1365.1861 0 2969.138 8.4186043
350 1.0442842e+08 1296.934 0 3370.9509 8.9271065
400 1.2759824e+08 817.33984 0 3351.5245 6.8724618
Loop time of 528.696 on 64 procs for 400 steps with 1734240 atoms
Performance: 65368.335 ns/day, 0.000 hours/ns, 0.757 timesteps/s
99.2% CPU use with 64 MPI tasks x no OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 0.053098 | 0.071612 | 0.096152 | 4.1 | 0.01
Bond | 9.7577e-05 | 0.00012984 | 0.00017322 | 0.0 | 0.00
Neigh | 301.06 | 394.1 | 493.41 | 450.6 | 74.54
Comm | 7.8705 | 106.94 | 200.63 | 865.5 | 20.23
Output | 0.0047098 | 0.0052866 | 0.0055549 | 0.3 | 0.00
Modify | 25.511 | 26.848 | 28.764 | 17.8 | 5.08
Other | | 0.736 | | | 0.14
Nlocal: 27097.5 ave 28368 max 25504 min
Histogram: 16 0 0 8 8 0 0 0 16 16
Nghost: 166100.0 ave 167736 max 164146 min
Histogram: 16 0 4 12 0 0 0 0 12 20
Neighs: 14.0625 ave 21 max 6 min
Histogram: 8 4 4 0 12 0 8 12 12 4
Total # of neighbors = 900
Ave neighs/atom = 0.00051895931
Ave special neighs/atom = 0.0000000
Neighbor list builds = 144
Dangerous builds = 0
LB equilibriumDist time: 3.490595
LB update time: 8.100787
LB PCalc time: 4.473729
LB fluidForce time: 7.598387
LB CorrectU time: 1.830964
Total wall time: 0:08:54

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@ -2,13 +2,15 @@
# Large colloidal sphere difusing around. #
# #
# In the first stage, the sphere is constructed by condensing atoms onto #
# the surface of a spherica region. #
# the surface of a spherical region. There are a flag you can change to #
# either bond atoms into a spherical shell or integrate them as a rigid body#
# #
# To run this example, LAMMPS needs to be compiled with a the following #
# packages: RIGID, LATBOTLZ #
# #
# Sample output from this run can be found in the file: #
# 'dump.polymer.lammpstrj' #
# If you uncomment the "dump..." line, sample output from this run #
# can be found in the file: #
# 'dump.trapnewsphere.lammpstrj' #
# and viewed using, e.g., the VMD software. #
# #
#===========================================================================#
@ -60,7 +62,7 @@ fix wall all wall/region mysphere lj93 15.0 1.5 5.28
fix 2 all nve
dump mydump all atom 10000 out.lammpstrj
#dump mydump all atom 10000 dump.trapnewsphere.lammpstrj
run 20000
@ -191,7 +193,7 @@ if "${is_bonded} == 1" then &
else &
"variable comdatafile string trap_n${n_nodes}_st${stpts}_dt${tstep}.out"
fix printCM all print 10 "$(step) $(f_FL) ${cmx} ${cmy} ${cmz} ${vcmx} ${vcmy} ${vcmz}" file ${comdatafile} screen no
#fix printCM all print 10 "$(step) $(f_FL) ${cmx} ${cmy} ${cmz} ${vcmx} ${vcmy} ${vcmz}" file ${comdatafile} screen no
run 10000
#run 25000000

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@ -0,0 +1,388 @@
LAMMPS (17 Feb 2022)
#===========================================================================#
# Large colloidal sphere difusing around. #
# #
# In the first stage, the sphere is constructed by condensing atoms onto #
# the surface of a spherical region. There are a flag you can change to #
# either bond atoms into a spherical shell or integrate them as a rigid body#
# #
# To run this example, LAMMPS needs to be compiled with a the following #
# packages: RIGID, LATBOTLZ #
# #
# If you uncomment the "dump..." line, sample output from this run #
# can be found in the file: #
# 'dump.trapnewsphere.lammpstrj' #
# and viewed using, e.g., the VMD software. #
# #
#===========================================================================#
units nano
dimension 3
boundary p p p
region mybox block -24 24 -24 24 -24 24
# flag indicating whether sphere will be bonded or rigid, 0 or 1
variable is_bonded equal 0
# timestep for the LB run (setup uses different timesteps)
variable tstep equal 0.00025
# number of stencil points in any direction. could be 2, 3, or 4
variable stpts equal 2
if "${is_bonded} == 1" then "create_box 1 mybox bond/types 10 extra/bond/per/atom 12" else "create_box 1 mybox"
create_box 1 mybox
Created orthogonal box = (-24 -24 -24) to (24 24 24)
1 by 2 by 2 MPI processor grid
#----------------------------------------------------------------------------
# Create a spherical region and then fill it with atoms
#----------------------------------------------------------------------------
region mysphereinside sphere 0 0 0 4.0
#variable n_nodes equal 216
variable n_nodes equal 284
create_atoms 1 random ${n_nodes} 1234 mysphereinside units box
create_atoms 1 random 284 1234 mysphereinside units box
Created 284 atoms
using box units in orthogonal box = (-24 -24 -24) to (24 24 24)
create_atoms CPU = 0.001 seconds
pair_style soft 1.0
pair_coeff * * 0.0
variable prefactor equal ramp(0,30)
fix 1 all adapt 1 pair soft a * * v_prefactor
mass * 1.0
#----------------------------------------------------------------------------
# Set up and do an initial run to push the atoms apart as the random creation
# could have them overlapping too much for stability.
#----------------------------------------------------------------------------
timestep 0.002
# Define sphere where minimum of wall potential is at r=4 so
# regions is 4 + (2/5)^(1/6) sigma
region mysphere sphere 0 0 0 5.28756
fix wall all wall/region mysphere lj93 15.0 1.5 5.28
fix 2 all nve
#dump mydump all atom 10000 dump.trapnewsphere.lammpstrj
run 20000
generated 0 of 0 mixed pair_coeff terms from geometric mixing rule
Neighbor list info ...
update every 1 steps, delay 10 steps, check yes
max neighbors/atom: 2000, page size: 100000
master list distance cutoff = 1.1
ghost atom cutoff = 1.1
binsize = 0.55, bins = 88 88 88
1 neighbor lists, perpetual/occasional/extra = 1 0 0
(1) pair soft, perpetual
attributes: half, newton on
pair build: half/bin/atomonly/newton
stencil: half/bin/3d
bin: standard
Per MPI rank memory allocation (min/avg/max) = 3.944 | 3.944 | 3.944 Mbytes
Step Temp E_pair E_mol TotEng Press
0 0 0 0 0 0
20000 317.05614 618.63581 0 2476.8578 0.030715
Loop time of 0.573686 on 4 procs for 20000 steps with 284 atoms
Performance: 6024197.192 ns/day, 0.000 hours/ns, 34862.252 timesteps/s
100.0% CPU use with 4 MPI tasks x no OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 0.062609 | 0.070036 | 0.076149 | 1.8 | 12.21
Neigh | 0.21074 | 0.2209 | 0.2305 | 1.5 | 38.51
Comm | 0.17847 | 0.19084 | 0.21153 | 3.0 | 33.26
Output | 1.74e-05 | 2.58e-05 | 5.02e-05 | 0.0 | 0.00
Modify | 0.079214 | 0.082596 | 0.085481 | 0.8 | 14.40
Other | | 0.009288 | | | 1.62
Nlocal: 71 ave 73 max 69 min
Histogram: 1 0 0 0 0 2 0 0 0 1
Nghost: 54.75 ave 57 max 53 min
Histogram: 2 0 0 0 0 0 0 1 0 1
Neighs: 107.25 ave 127 max 85 min
Histogram: 1 0 0 1 0 0 0 0 1 1
Total # of neighbors = 429
Ave neighs/atom = 1.5105634
Neighbor list builds = 1996
Dangerous builds = 1993
unfix wall
fix wall all wall/region mysphere lj93 50.0 1.5 5.68
unfix 1
#----------------------------------------------------------------------------
# Do a run to condense the atoms onto the spherical surface and anneal them
# so they will be orderly aranged onto a semi-triangular mesh on the sphere
#----------------------------------------------------------------------------
pair_style lj/cut 1.68359
#pair_coeff * * 0.002 1.5 1.68369
pair_coeff * * 0.0005 1.5 1.68369
fix 3 all langevin 1.5 0.01 100.0 5678
neighbor 0.3 bin
neigh_modify delay 0 every 1 check yes
comm_modify cutoff 2.5
run 500000
generated 0 of 0 mixed pair_coeff terms from geometric mixing rule
Neighbor list info ...
update every 1 steps, delay 0 steps, check yes
max neighbors/atom: 2000, page size: 100000
master list distance cutoff = 1.98369
ghost atom cutoff = 2.5
binsize = 0.991845, bins = 49 49 49
1 neighbor lists, perpetual/occasional/extra = 1 0 0
(1) pair lj/cut, perpetual
attributes: half, newton on
pair build: half/bin/atomonly/newton
stencil: half/bin/3d
bin: standard
Per MPI rank memory allocation (min/avg/max) = 3.277 | 3.277 | 3.277 Mbytes
Step Temp E_pair E_mol TotEng Press
20000 317.05614 626.83186 0 2485.0538 0.034256287
520000 0.20789564 780.54747 0 781.76592 0.028916791
Loop time of 12.8226 on 4 procs for 500000 steps with 284 atoms
Performance: 6738089.440 ns/day, 0.000 hours/ns, 38993.573 timesteps/s
100.0% CPU use with 4 MPI tasks x no OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 2.6508 | 3.1904 | 3.6443 | 20.0 | 24.88
Neigh | 0.68551 | 0.75012 | 0.80362 | 5.1 | 5.85
Comm | 3.7915 | 4.3143 | 4.922 | 19.6 | 33.65
Output | 2.26e-05 | 3.335e-05 | 6.29e-05 | 0.0 | 0.00
Modify | 3.1825 | 3.2495 | 3.3155 | 2.6 | 25.34
Other | | 1.318 | | | 10.28
Nlocal: 71 ave 74 max 69 min
Histogram: 1 0 1 0 1 0 0 0 0 1
Nghost: 109.75 ave 113 max 105 min
Histogram: 1 0 0 0 0 1 0 0 1 1
Neighs: 613.25 ave 718 max 495 min
Histogram: 1 0 0 1 0 0 0 1 0 1
Total # of neighbors = 2453
Ave neighs/atom = 8.6373239
Neighbor list builds = 13515
Dangerous builds = 0
minimize 0.0 1.0e-8 1000 100000
generated 0 of 0 mixed pair_coeff terms from geometric mixing rule
Per MPI rank memory allocation (min/avg/max) = 4.402 | 4.402 | 4.402 Mbytes
Step Temp E_pair E_mol TotEng Press
520000 0.20789564 780.54747 0 781.76592 0.028916791
520004 0.20789564 780.00993 0 781.22838 0.02889732
Loop time of 0.00296133 on 4 procs for 4 steps with 284 atoms
99.8% CPU use with 4 MPI tasks x no OpenMP threads
Minimization stats:
Stopping criterion = linesearch alpha is zero
Energy initial, next-to-last, final =
780.547473373201 780.009929329778 780.009929329778
Force two-norm initial, final = 40.166574 13.723713
Force max component initial, final = 4.2404394 1.5423956
Final line search alpha, max atom move = 6.0381565e-11 9.3132257e-11
Iterations, force evaluations = 4 69
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 0.0009509 | 0.0010909 | 0.0014002 | 0.5 | 36.84
Neigh | 0 | 0 | 0 | 0.0 | 0.00
Comm | 0.0007064 | 0.0010256 | 0.0011795 | 0.6 | 34.63
Output | 0 | 0 | 0 | 0.0 | 0.00
Modify | 0.000204 | 0.00024405 | 0.0002982 | 0.0 | 8.24
Other | | 0.0006008 | | | 20.29
Nlocal: 71 ave 72 max 69 min
Histogram: 1 0 0 0 0 0 1 0 0 2
Nghost: 109.75 ave 113 max 107 min
Histogram: 1 1 0 0 0 0 1 0 0 1
Neighs: 612.75 ave 726 max 504 min
Histogram: 1 0 0 1 0 0 1 0 0 1
Total # of neighbors = 2451
Ave neighs/atom = 8.6302817
Neighbor list builds = 0
Dangerous builds = 0
unfix wall
unfix 2
unfix 3
#----------------------------------------------------------------------------
# If bonded, bond the atoms together at something close to their current
# configuration
#----------------------------------------------------------------------------
variable total_mass equal 0.002398
variable node_mass equal "v_total_mass / v_n_nodes"
mass * ${node_mass}
mass * 8.44366197183099e-06
if "${is_bonded} == 1" then "bond_style harmonic" "bond_coeff 1 25.0 0.869333" "bond_coeff 2 25.0 0.948" "bond_coeff 3 25.0 1.026666" "bond_coeff 4 25.0 1.105333" "bond_coeff 5 25.0 1.184" "bond_coeff 6 25.0 1.262666" "bond_coeff 7 25.0 1.341333" "bond_coeff 8 25.0 1.42" "bond_coeff 9 25.0 1.498666" "bond_coeff 10 25.0 1.577333" "create_bonds many all all 1 0.83 0.908666" "create_bonds many all all 2 0.908667 0.987333" "create_bonds many all all 3 0.987334 1.066" "create_bonds many all all 4 1.066001 1.144666" "create_bonds many all all 5 1.144667 1.223333" "create_bonds many all all 6 1.223334 1.302" "create_bonds many all all 7 1.302001 1.380666" "create_bonds many all all 8 1.380667 1.459333" "create_bonds many all all 9 1.459334 1.538" "create_bonds many all all 10 1.538001 1.61667"
if "${is_bonded} == 1" then "pair_style lj/cut 5.05108" "pair_coeff * * 0.5 4.5" else "pair_style lj/cut 1.2" "pair_coeff * * 0.0 0.0"
pair_style lj/cut 1.2
pair_coeff * * 0.0 0.0
timestep ${tstep}
timestep 0.00025
#----------------------------------------------------------------------------
# You could uncomment the following lines and then turn off the noise and
# comment out the trap (following) to instead do a run that drags the
# sphere through the fluid to measure the drag force.
#----------------------------------------------------------------------------
#variable total_force equal 8.0
#variable node_force equal "v_total_force / v_n_nodes"
#variable oscillateY equal cos(step*0.0005)/(-0.004+50*v_tstep)/v_n_nodes
#variable oscillateZ equal cos(step*0.0003)/(-0.004+50*v_tstep)/v_n_nodes
#fix drag all addforce ${node_force} v_oscillateY v_oscillateZ
#----------------------------------------------------------------------------
# Trap the sphere along x (could be done experimentally using optical
# tweezers.
#----------------------------------------------------------------------------
variable fx atom -x*4.14195/284.0
fix trap all addforce v_fx 0.0 0.0 # needs to go before fix lb/fluid and lb/viscous
#----------------------------------------------------------------------------
# Set up the lb/fluid parameters for water and at a temperature of 300 K. If
# the colloid is integrated with the rigid fix, the dof are not
# automatically calculated correctly but as this would then be a rigid
# sphere it is clear it should have 6 degrees of freedom.
#----------------------------------------------------------------------------
if "${is_bonded} == 1" then "fix FL all lb/fluid 1 1.0 0.0009982071 stencil ${stpts} dx 1.2 noise 300.0 181920" else "fix FL all lb/fluid 1 1.0 0.0009982071 stencil ${stpts} dx 1.2 noise 300.0 181920 dof 6"
fix FL all lb/fluid 1 1.0 0.0009982071 stencil ${stpts} dx 1.2 noise 300.0 181920 dof 6
fix FL all lb/fluid 1 1.0 0.0009982071 stencil 2 dx 1.2 noise 300.0 181920 dof 6
Using a lattice-Boltzmann grid of 40 by 40 by 40 total grid points. (../fix_lb_fluid.cpp:486)
Local Grid Geometry created. (../fix_lb_fluid.cpp:1018)
fix 2 all lb/viscous
if "${is_bonded} == 1" then "fix 3 all nve" else "fix 3 all rigid group 1 all"
fix 3 all rigid group 1 all
1 rigid bodies with 284 atoms
#equilibration run
run 10000
CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE
Your simulation uses code contributions which should be cited:
- fix lb/fluid command:
@Article{Denniston et al.,
author = {C. Denniston, N. Afrasiabian, M.G. Cole-Andre,F.E. Mackay, S.T.T. Ollila, T. Whitehead},
title = {LAMMPS lb/fluid fix version 2: Improved Hydrodynamic Forces Implemented into LAMMPS through a lattice-Boltzmann fluid}, journal = {Comp.~Phys.~Comm.},
year = 2022,
volume = 275,
pages = {108318}
}
CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE
generated 0 of 0 mixed pair_coeff terms from geometric mixing rule
Per MPI rank memory allocation (min/avg/max) = 5.306 | 5.306 | 5.306 Mbytes
Step Temp E_pair E_mol TotEng Press
520004 8.9102565e-07 0 0 1.8452924e-08 6.7761632e-05
530004 3.474402 0 0 0.071954018 -0.00061159689
Loop time of 238.57 on 4 procs for 10000 steps with 284 atoms
Performance: 905.396 ns/day, 0.027 hours/ns, 41.916 timesteps/s
100.0% CPU use with 4 MPI tasks x no OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 0.07901 | 0.086329 | 0.095378 | 2.0 | 0.04
Neigh | 0.012928 | 0.013445 | 0.013795 | 0.3 | 0.01
Comm | 0.18848 | 0.1969 | 0.20455 | 1.3 | 0.08
Output | 4.07e-05 | 5.9575e-05 | 0.0001157 | 0.0 | 0.00
Modify | 238.01 | 238.02 | 238.03 | 0.1 | 99.77
Other | | 0.2536 | | | 0.11
Nlocal: 71 ave 84 max 59 min
Histogram: 1 1 0 0 0 0 0 0 1 1
Nghost: 110.75 ave 121 max 101 min
Histogram: 1 1 0 0 0 0 0 0 1 1
Neighs: 243.25 ave 285 max 209 min
Histogram: 1 1 0 0 0 0 1 0 0 1
Total # of neighbors = 973
Ave neighs/atom = 3.4260563
Neighbor list builds = 52
Dangerous builds = 0
# data gathering run
reset_timestep 0
#----------------------------------------------------------------------------
# Create variables containing the positions/velocity of the colloids center
# of mass.
#----------------------------------------------------------------------------
variable cmx equal xcm(all,x)
variable cmy equal xcm(all,y)
variable cmz equal xcm(all,z)
variable vcmx equal vcm(all,x)
variable vcmy equal vcm(all,y)
variable vcmz equal vcm(all,z)
if "${is_bonded} == 1" then "variable comdatafile string trap_nb${n_nodes}_st${stpts}_dt${tstep}.out" else "variable comdatafile string trap_n${n_nodes}_st${stpts}_dt${tstep}.out"
variable comdatafile string trap_n${n_nodes}_st${stpts}_dt${tstep}.out
variable comdatafile string trap_n284_st${stpts}_dt${tstep}.out
variable comdatafile string trap_n284_st2_dt${tstep}.out
variable comdatafile string trap_n284_st2_dt0.00025.out
#fix printCM all print 10 "$(step) $(f_FL) ${cmx} ${cmy} ${cmz} ${vcmx} ${vcmy} ${vcmz}" file ${comdatafile} screen no
run 10000
generated 0 of 0 mixed pair_coeff terms from geometric mixing rule
Per MPI rank memory allocation (min/avg/max) = 5.306 | 5.306 | 5.306 Mbytes
Step Temp E_pair E_mol TotEng Press
0 3.474402 0 0 0.071954018 0.00181615
10000 2.6284662 0 0 0.054434894 0.00098091301
Loop time of 237.772 on 4 procs for 10000 steps with 284 atoms
Performance: 908.435 ns/day, 0.026 hours/ns, 42.057 timesteps/s
100.0% CPU use with 4 MPI tasks x no OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 0.079283 | 0.087287 | 0.095198 | 2.6 | 0.04
Neigh | 0.0133 | 0.013789 | 0.014439 | 0.3 | 0.01
Comm | 0.18949 | 0.1975 | 0.20661 | 1.8 | 0.08
Output | 2.88e-05 | 4.3675e-05 | 8.58e-05 | 0.0 | 0.00
Modify | 237.21 | 237.22 | 237.22 | 0.0 | 99.77
Other | | 0.253 | | | 0.11
Nlocal: 71 ave 87 max 54 min
Histogram: 1 0 0 0 0 2 0 0 0 1
Nghost: 110 ave 125 max 100 min
Histogram: 1 1 0 0 1 0 0 0 0 1
Neighs: 243.25 ave 264 max 207 min
Histogram: 1 0 0 0 0 0 1 0 1 1
Total # of neighbors = 973
Ave neighs/atom = 3.4260563
Neighbor list builds = 53
Dangerous builds = 0
#run 25000000
Total wall time: 0:08:09

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@ -1,218 +0,0 @@
LAMMPS (29 Sep 2021 - Update 1)
Created orthogonal box = (-24.000000 -24.000000 -24.000000) to (24.000000 24.000000 24.000000)
1 by 2 by 2 MPI processor grid
Created 284 atoms
using box units in orthogonal box = (-24.000000 -24.000000 -24.000000) to (24.000000 24.000000 24.000000)
create_atoms CPU = 0.001 seconds
Neighbor list info ...
update every 1 steps, delay 10 steps, check yes
max neighbors/atom: 2000, page size: 100000
master list distance cutoff = 1.1
ghost atom cutoff = 1.1
binsize = 0.55, bins = 88 88 88
1 neighbor lists, perpetual/occasional/extra = 1 0 0
(1) pair soft, perpetual
attributes: half, newton on
pair build: half/bin/atomonly/newton
stencil: half/bin/3d
bin: standard
Setting up Verlet run ...
Unit style : nano
Current step : 0
Time step : 0.002
Per MPI rank memory allocation (min/avg/max) = 4.947 | 4.947 | 4.947 Mbytes
Step Temp E_pair E_mol TotEng Press
0 0 0 0 0 0
20000 317.05614 618.63581 0 2476.8578 0.030715
Loop time of 1.04979 on 4 procs for 20000 steps with 284 atoms
Performance: 3292081.736 ns/day, 0.000 hours/ns, 19051.399 timesteps/s
99.8% CPU use with 4 MPI tasks x no OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 0.10763 | 0.11963 | 0.13214 | 2.9 | 11.40
Neigh | 0.38332 | 0.41159 | 0.43122 | 2.8 | 39.21
Comm | 0.31394 | 0.34969 | 0.3981 | 5.1 | 33.31
Output | 0.0029418 | 0.0035883 | 0.0043197 | 0.8 | 0.34
Modify | 0.13951 | 0.14727 | 0.15199 | 1.3 | 14.03
Other | | 0.01802 | | | 1.72
Nlocal: 71.0000 ave 73 max 69 min
Histogram: 1 0 0 0 0 2 0 0 0 1
Nghost: 54.7500 ave 57 max 53 min
Histogram: 2 0 0 0 0 0 0 1 0 1
Neighs: 107.250 ave 127 max 85 min
Histogram: 1 0 0 1 0 0 0 0 1 1
Total # of neighbors = 429
Ave neighs/atom = 1.5105634
Neighbor list builds = 1996
Dangerous builds = 1993
Neighbor list info ...
update every 1 steps, delay 0 steps, check yes
max neighbors/atom: 2000, page size: 100000
master list distance cutoff = 1.98369
ghost atom cutoff = 2.5
binsize = 0.991845, bins = 49 49 49
1 neighbor lists, perpetual/occasional/extra = 1 0 0
(1) pair lj/cut, perpetual
attributes: half, newton on
pair build: half/bin/atomonly/newton
stencil: half/bin/3d
bin: standard
Setting up Verlet run ...
Unit style : nano
Current step : 20000
Time step : 0.002
Per MPI rank memory allocation (min/avg/max) = 4.279 | 4.280 | 4.280 Mbytes
Step Temp E_pair E_mol TotEng Press
20000 317.05614 626.83186 0 2485.0538 0.034256287
520000 0.20789564 780.54747 0 781.76592 0.028916791
Loop time of 20.94 on 4 procs for 500000 steps with 284 atoms
Performance: 4126072.144 ns/day, 0.000 hours/ns, 23877.732 timesteps/s
99.9% CPU use with 4 MPI tasks x no OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 4.3543 | 5.0458 | 5.6845 | 21.6 | 24.10
Neigh | 1.3816 | 1.444 | 1.5232 | 4.7 | 6.90
Comm | 6.2693 | 7.0156 | 7.7783 | 21.0 | 33.50
Output | 0.038337 | 0.072704 | 0.11121 | 10.0 | 0.35
Modify | 4.9433 | 5.027 | 5.1022 | 2.9 | 24.01
Other | | 2.335 | | | 11.15
Nlocal: 71.0000 ave 74 max 69 min
Histogram: 1 0 1 0 1 0 0 0 0 1
Nghost: 109.750 ave 113 max 105 min
Histogram: 1 0 0 0 0 1 0 0 1 1
Neighs: 613.250 ave 718 max 495 min
Histogram: 1 0 0 1 0 0 0 1 0 1
Total # of neighbors = 2453
Ave neighs/atom = 8.6373239
Neighbor list builds = 13515
Dangerous builds = 0
Setting up cg style minimization ...
Unit style : nano
Current step : 520000
Per MPI rank memory allocation (min/avg/max) = 5.404 | 5.405 | 5.405 Mbytes
Step Temp E_pair E_mol TotEng Press
520000 0.20789564 780.54747 0 781.76592 0.028916791
520004 0.20789564 780.00993 0 781.22838 0.02889732
Loop time of 0.0052249 on 4 procs for 4 steps with 284 atoms
90.8% CPU use with 4 MPI tasks x no OpenMP threads
Minimization stats:
Stopping criterion = linesearch alpha is zero
Energy initial, next-to-last, final =
780.547473373201 780.009929329778 780.009929329778
Force two-norm initial, final = 40.166574 13.723713
Force max component initial, final = 4.2404394 1.5423956
Final line search alpha, max atom move = 6.0381565e-11 9.3132257e-11
Iterations, force evaluations = 4 69
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 0.000733 | 0.00099598 | 0.0013314 | 0.0 | 19.06
Neigh | 0 | 0 | 0 | 0.0 | 0.00
Comm | 0.0006855 | 0.0010138 | 0.0012766 | 0.7 | 19.40
Output | 0 | 0 | 0 | 0.0 | 0.00
Modify | 0.0002038 | 0.00023407 | 0.0003163 | 0.0 | 4.48
Other | | 0.002981 | | | 57.05
Nlocal: 71.0000 ave 72 max 69 min
Histogram: 1 0 0 0 0 0 1 0 0 2
Nghost: 109.750 ave 113 max 107 min
Histogram: 1 1 0 0 0 0 1 0 0 1
Neighs: 612.750 ave 726 max 504 min
Histogram: 1 0 0 1 0 0 1 0 0 1
Total # of neighbors = 2451
Ave neighs/atom = 8.6302817
Neighbor list builds = 0
Dangerous builds = 0
Using a lattice-Boltzmann grid of 40 by 40 by 40 total grid points. (../fix_lb_fluid.cpp:475)
Local Grid Geometry created. (../fix_lb_fluid.cpp:1021)
First Run initialized
1 rigid bodies with 284 atoms
Setting up Verlet run ...
Unit style : nano
Current step : 520004
Time step : 0.00025
Per MPI rank memory allocation (min/avg/max) = 6.309 | 6.309 | 6.309 Mbytes
Step Temp E_pair E_mol TotEng Press
520004 8.9102565e-07 0 0 1.8452924e-08 6.7761632e-05
530004 3.474402 0 0 0.071954018 -0.00061159689
Loop time of 252.92 on 4 procs for 10000 steps with 284 atoms
Performance: 854.024 ns/day, 0.028 hours/ns, 39.538 timesteps/s
100.0% CPU use with 4 MPI tasks x no OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 0.083731 | 0.090623 | 0.098802 | 1.8 | 0.04
Neigh | 0.016581 | 0.017116 | 0.018055 | 0.4 | 0.01
Comm | 0.18954 | 0.19805 | 0.20528 | 1.3 | 0.08
Output | 0.0011027 | 0.0018302 | 0.002624 | 1.3 | 0.00
Modify | 252.35 | 252.37 | 252.39 | 0.1 | 99.78
Other | | 0.2466 | | | 0.10
Nlocal: 71.0000 ave 84 max 59 min
Histogram: 1 1 0 0 0 0 0 0 1 1
Nghost: 110.750 ave 121 max 101 min
Histogram: 1 1 0 0 0 0 0 0 1 1
Neighs: 243.250 ave 285 max 209 min
Histogram: 1 1 0 0 0 0 1 0 0 1
Total # of neighbors = 973
Ave neighs/atom = 3.4260563
Neighbor list builds = 52
Dangerous builds = 0
Setting up Verlet run ...
Unit style : nano
Current step : 0
Time step : 0.00025
Per MPI rank memory allocation (min/avg/max) = 6.309 | 6.309 | 6.309 Mbytes
Step Temp E_pair E_mol TotEng Press
0 3.474402 0 0 0.071954018 0.00181615
10000 2.6284662 0 0 0.054434894 0.00098091301
Loop time of 296.345 on 4 procs for 10000 steps with 284 atoms
Performance: 728.880 ns/day, 0.033 hours/ns, 33.744 timesteps/s
99.9% CPU use with 4 MPI tasks x no OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 0.097394 | 0.10852 | 0.12099 | 3.3 | 0.04
Neigh | 0.014447 | 0.015052 | 0.015762 | 0.4 | 0.01
Comm | 0.23755 | 0.24986 | 0.26167 | 2.3 | 0.08
Output | 0.0022544 | 0.0025083 | 0.0025944 | 0.3 | 0.00
Modify | 295.67 | 295.69 | 295.72 | 0.1 | 99.78
Other | | 0.28 | | | 0.09
Nlocal: 71.0000 ave 87 max 54 min
Histogram: 1 0 0 0 0 2 0 0 0 1
Nghost: 110.000 ave 125 max 100 min
Histogram: 1 1 0 0 1 0 0 0 0 1
Neighs: 243.250 ave 264 max 207 min
Histogram: 1 0 0 0 0 0 1 0 1 1
Total # of neighbors = 973
Ave neighs/atom = 3.4260563
Neighbor list builds = 53
Dangerous builds = 0
LB equilibriumDist time: 288.718806
LB update time: 135.577114
LB PCalc time: 76.637579
LB fluidForce time: 25.590260
LB CorrectU time: 19.713186
Total wall time: 0:09:31

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@ -1,102 +0,0 @@
# Fix print output for fix printCM
0 0 0 -5.00000000070583e-08 0 0 0
100 0.000862030487945766 0.0123054296765635 0.0122731465590126 0.0388471409686686 0.554171814767862 0.549353841801444
200 0.00185887929142589 0.026504860571345 0.0263575026345381 0.0406164349263177 0.577485522778581 0.572358123657981
300 0.00288609111410669 0.041071186430552 0.0407387949853162 0.0414733855376221 0.586334796005238 0.579029199408148
400 0.00392999369142328 0.0557729852014459 0.0552309274319543 0.0420073620501712 0.589116414842769 0.579447580483091
500 0.00498536275941171 0.070499164057003 0.0697415367523594 0.0424046217549586 0.588483528276922 0.579713082803989
600 0.00604958471579167 0.0851758456067289 0.0842109166632151 0.0427225597696811 0.585256835192702 0.578675424528672
700 0.00712105404933591 0.0997436526892664 0.0986256150648839 0.0429880258004064 0.579826819459789 0.574965309339321
800 0.00819868650413988 0.114150894221279 0.112970143937093 0.0432171820009732 0.572436469824202 0.571379696846873
900 0.00928167490285266 0.128350199155429 0.127214300017093 0.0434177041449832 0.563212233113465 0.568141900579381
1000 0.0103693800467608 0.142297070506134 0.141346756412092 0.0435952275760965 0.552255756217314 0.563198941286352
1100 0.0114612757740303 0.155949207303663 0.155363270006244 0.0437534628364653 0.539645345817638 0.557547826275249
1200 0.0125569146112762 0.16926611615961 0.169243664446122 0.0438950800605928 0.525448494610828 0.552385484155222
1300 0.0136559090539262 0.182208942626165 0.182971608380899 0.0440222186903751 0.509729009151129 0.546362371549647
1400 0.0147579190343771 0.194740388291494 0.196542287352516 0.0441365813451693 0.49254820772961 0.53923843292572
1500 0.0158626435855424 0.206824684659766 0.20994260685037 0.0442396069433182 0.473967311999804 0.532221947561911
1600 0.016969815144629 0.218427601281069 0.223154967935698 0.0443325350264529 0.454048234578232 0.52490993166384
1700 0.0180791952377331 0.229516470517873 0.23617097657798 0.0444164592397298 0.432854159986641 0.516564181615295
1800 0.0191905712013339 0.240060223538286 0.248981532998294 0.044492359500651 0.41044987377188 0.507890446812699
1900 0.0203037536403243 0.250029432395321 0.261570985506027 0.0445611192532371 0.386901867661691 0.499132572020635
2000 0.0214185743448717 0.259396354393085 0.27392793783106 0.0446235485425134 0.36227844753556 0.489625430842279
2100 0.0225348845239784 0.268134976647594 0.286044452302522 0.0446803959508529 0.33664970767355 0.479528537282853
2200 0.0236525533438346 0.276221059771718 0.297907925422812 0.0447323522651497 0.310087425177735 0.469306149162182
2300 0.0247714666787315 0.283632179279284 0.309505839706109 0.0447800603260404 0.282664970647061 0.458617441651712
2400 0.0258915259587789 0.290347763502706 0.320829824034913 0.0448241232027665 0.254457178820598 0.44728722136532
2500 0.0270126471290237 0.29634912772668 0.331869872099864 0.0448651027638521 0.225540156619441 0.435694872117013
2600 0.0281347597089685 0.30161950408948 0.34261406670463 0.0449035206640385 0.195991101443378 0.423810112638771
2700 0.0292578058434875 0.306144066595306 0.353053315437221 0.0449398633594251 0.165888127664992 0.41137110526867
2800 0.030381739316435 0.309909951263501 0.363179201634917 0.0449745786568748 0.135310062250947 0.398557628586131
2900 0.0315065245470535 0.312906271705092 0.372981337255243 0.0450080686588849 0.104336253816866 0.385510764564962
3000 0.0326321354733442 0.315124130290068 0.38245041225465 0.0450406882166782 0.0730464235910661 0.372042169913947
3100 0.0337585542236816 0.316556625622056 0.391578764333674 0.0450727382300617 0.0415205367630292 0.358160568106331
3200 0.034885766256052 0.31719885875625 0.400357663441649 0.0451036547071826 0.00983907573551093 0.344030677469557
3300 0.0360136872580489 0.317048008823491 0.408777748573793 0.045129040578256 -0.0219107556190337 0.32955676892105
3400 0.0371421729145326 0.316103516604794 0.416830876205518 0.0451489780670191 -0.0536371623936908 0.314668838998143
3500 0.0382710977786635 0.314367093900902 0.424509118504444 0.0451643056938233 -0.0852504239010061 0.299493529440764
3600 0.039400355723286 0.311842668099774 0.431804221276515 0.0451757343394363 -0.116662994488708 0.284066192756869
3700 0.0405298571235071 0.308536328771854 0.438709086698874 0.0451838769711716 -0.147789438945399 0.268314898256792
3800 0.0416595266582488 0.304456275109671 0.445217419249879 0.0451892685671837 -0.178546427643007 0.252292051488811
3900 0.0427893015653343 0.299612762874147 0.451322687530176 0.0451923807983904 -0.208852773056517 0.236070778082722
4000 0.0439191302054448 0.294018050086672 0.457018894174797 0.0451936331558271 -0.238629493808845 0.219614191498541
4100 0.0450489708508549 0.287686340949681 0.462300983177224 0.0451934002599296 -0.267799890966025 0.202923522400675
4200 0.0461787906402368 0.280633727679951 0.46716400466032 0.0451920174774752 -0.296289636112744 0.186067111728447
4300 0.0473085646518621 0.272878130115369 0.471603197062402 0.0451897853348954 -0.324026864816915 0.169048732639397
4400 0.0484382750721604 0.264439232972262 0.475614593651548 0.0451869725702152 -0.350942268020778 0.151851130542203
4500 0.049567910442748 0.255338420725821 0.479194641553675 0.045183819044704 -0.37696918707268 0.134518378555459
4600 0.0506974649686312 0.245598710206154 0.482339905708537 0.0451805383879157 -0.402043707551555 0.117079995982193
4700 0.0518269378826076 0.235244680971009 0.485047513161603 0.0451773197428711 -0.426104742058066 0.0995240797086898
4800 0.052956332860714 0.224302403572179 0.487315158338437 0.0451743295087643 -0.449094108942282 0.0818709366680246
4900 0.0540856574759206 0.212799365966729 0.489140744652625 0.0451717131537436 -0.470956607153122 0.0641572680070745
5000 0.0552149226836002 0.200764398290593 0.490522557427433 0.0451695961979473 -0.491640075621893 0.04638589199498
5100 0.0563441423344801 0.188227596194827 0.491459457220784 0.045168084821581 -0.511095441430305 0.0285636095658589
5200 0.057473332702688 0.17522024305006 0.491950642641828 0.0451672665812737 -0.529276763383753 0.0107219134977892
5300 0.0586025120187606 0.161774731300966 0.491995614110831 0.0451672105484937 -0.546141262620913 -0.00712340874154904
5400 0.0597317000030321 0.147924483163387 0.491594377124997 0.0451679668568151 -0.561649340260399 -0.0249682994538472
5500 0.0608609173904777 0.133703870891375 0.490747365943808 0.0451695662898269 -0.575764591653344 -0.0427904594790811
5600 0.0619901854374394 0.119148136830319 0.489455318876335 0.045172019632285 -0.58845381491908 -0.0605675872373609
5700 0.0631195254064262 0.104293313359254 0.487719399569343 0.0451753165168183 -0.599687010953726 -0.0782918862578729
5800 0.0642489580246837 0.0891761427946867 0.48554123315084 0.0451794242166182 -0.609437382803975 -0.0959482954276833
5900 0.0653785029101205 0.0738339973249388 0.482922791336815 0.0451842864271072 -0.617681336848454 -0.113513947143333
6000 0.066508177961606 0.0583047989558168 0.479866421958322 0.0451898217427784 -0.624398482710512 -0.13097562667804
6100 0.0676379987117821 0.0426269393910158 0.476374926355184 0.0451959219945778 -0.629571635891283 -0.148321352569801
6200 0.0687679776380947 0.0268391997711945 0.472451499697091 0.0452024505874852 -0.633186826926119 -0.165530745880477
6300 0.0698981234280855 0.010980670154477 0.468099704053854 0.0452092406152506 -0.635233314989177 -0.182586480506518
6400 0.0710284401951811 -0.00490933141996686 0.463323535196445 0.0452160926978174 -0.6357036064805 -0.199476058698813
6500 0.0721589266379823 -0.0207913404308021 0.45812741824118 0.0452227725683118 -0.634593480754686 -0.216181770202423
6600 0.0732895751329617 -0.0366258280722564 0.4525161672434 0.0452290081924521 -0.631902021250181 -0.232684251091254
6700 0.0744203707468311 -0.0523732842796794 0.446495021852624 0.0452344861625994 -0.627631650070581 -0.248968525167056
6800 0.0755512901476198 -0.0679943016610313 0.440069676657587 0.0452388471144838 -0.621788164979803 -0.265018013055149
6900 0.0766823003834517 -0.0834496603398142 0.433246256793092 0.0452416796548797 -0.614380775066988 -0.280812614225028
7000 0.0778133574838834 -0.0987004136215648 0.426031330764786 0.0452425120772539 -0.605422129824962 -0.296334220434174
7100 0.0789444048161975 -0.113707974241796 0.418431952538327 0.0452408008213928 -0.594928335060022 -0.311565205779314
7200 0.0800753710948757 -0.128434200729008 0.410455666617559 0.0452359139442821 -0.582918944331306 -0.326484492981048
7300 0.0812061678888613 -0.142841483083547 0.402110518367413 0.0452271068609726 -0.56941690886808 -0.34107027310023
7400 0.0823366868879886 -0.156892832550369 0.393405100664375 0.0452137152253101 -0.554451229049732 -0.355302873244928
7500 0.0834668517149059 -0.170552623647645 0.384348175871066 0.0451996568242026 -0.538109504133949 -0.3691955162588
7600 0.0845966786525954 -0.183787343990598 0.374948167603608 0.0451866668285694 -0.520452068779317 -0.38274791022926
7700 0.0857261928989984 -0.196564598620189 0.365213708220604 0.0451746173490727 -0.501519185936364 -0.395949104997471
7800 0.0868554160875386 -0.208853033947754 0.355153722643092 0.0451633558994798 -0.481353961460688 -0.408788219630066
7900 0.0879843659433281 -0.220622412047369 0.344777414582154 0.0451527246802332 -0.460002566524482 -0.421253498591182
8000 0.0891130563099555 -0.23184368872928 0.334094257673578 0.0451425726521896 -0.437514339207557 -0.433334064382642
8100 0.0902414974316455 -0.2424890932098 0.323113996077294 0.0451327640586105 -0.413941813252733 -0.445019966270824
8200 0.0913696964100858 -0.252532207710901 0.311846632415356 0.0451231839591836 -0.389340685397376 -0.456300911536802
8300 0.0924976577671853 -0.261948045581448 0.300302411401681 0.0451137412199365 -0.363769731247534 -0.467166979522632
8400 0.0936253840550899 -0.270713126771119 0.288491813206727 0.0451043693754287 -0.337290679181815 -0.477609349083408
8500 0.0947528764650488 -0.278805549717671 0.27642554360983 0.0450950257530967 -0.309968050973641 -0.487619421164766
8600 0.0958801353970909 -0.286205058917463 0.264114517046721 0.0450856892760242 -0.281868977005235 -0.497188713267531
8700 0.0970071609627085 -0.292893107630846 0.251569845366989 0.0450763573660472 -0.253062992836497 -0.506309612902325
8800 0.0981339534030675 -0.298852915325574 0.238802829407755 0.0450670423558943 -0.223621822504895 -0.514975070718216
8900 0.0992605134153133 -0.304069519580759 0.22582494504124 0.0450577677864475 -0.193619152641678 -0.523178137637988
9000 0.100386842388707 -0.308529822260866 0.212647830382011 0.0450485649429167 -0.163130400331202 -0.530912414901356
9100 0.101512942559987 -0.312222629827916 0.199283277442076 0.0450394698977844 -0.13223247655603 -0.538172167586218
9200 0.102638817103052 -0.315138687696582 0.185743221236983 0.0450305212343208 -0.10100354632644 -0.544951888794609
9300 0.103764470171021 -0.317270708558709 0.172039727157391 0.0450217585121602 -0.0695227861974757 -0.551246411933543
9400 0.104889906908796 -0.318613394619428 0.158184981612494 0.0450132214234404 -0.0378701397929889 -0.557051185837414
9500 0.106015133451531 -0.319163453704509 0.144191282694294 0.0450049494770458 -0.00612607214576512 -0.562362036167608
9600 0.107140156919558 -0.318919609223059 0.130071028527096 0.0449969819880669 0.0256286759940099 -0.567175055659959
9700 0.108264985414172 -0.317882604002936 0.115836707124747 0.0449893581153677 0.0573133323763313 -0.571486831413926
9800 0.109389628012451 -0.316055198056751 0.101500887824999 0.0449821167122573 0.0888473342969765 -0.575294393321441
9900 0.110514094754186 -0.313442160379143 0.0870762114315177 0.0449752958236126 0.120150564786057 -0.578595028443573
10000 0.111638396610866 -0.310050254915132 0.0725753806410134 0.0449689317481374 0.151143582530835 -0.581386376944959

View File

@ -4,9 +4,10 @@
# Run consists of a colloidal particle being dragged with a constant force #
# through an LB-fluid. The colloidal particle could be single atom or #
# be a composite particle. Composite particles could be bonded or just #
# rigidly constrained to stay together. #
# rigidly constrained to stay together. You can set flags in the script to #
# change these. #
# #
# Sample output from this run can be found in the files with ".log" #
# Sample output from this run can be found in the files with "log." #
# located in the same directory. #
#===========================================================================#
@ -133,7 +134,7 @@ if "${is_bonded} == 1" then &
else &
"variable comdatafile string drag_n${n_nodes}_st${stpts}_dt${tstep}.out"
fix printCM all print 100 "$(step) ${cmx} ${cmy} ${cmz} ${vcmx} ${vcmy} ${vcmz}" file ${comdatafile} screen no
#fix printCM all print 100 "$(step) ${cmx} ${cmy} ${cmz} ${vcmx} ${vcmy} ${vcmz}" file ${comdatafile} screen no
run 10000
#run 100000

View File

@ -0,0 +1,212 @@
LAMMPS (17 Feb 2022)
#===========================================================================#
# single particle drag tests #
# #
# Run consists of a colloidal particle being dragged with a constant force #
# through an LB-fluid. The colloidal particle could be single atom or #
# be a composite particle. Composite particles could be bonded or just #
# rigidly constrained to stay together. You can set flags in the script to #
# change these. #
# #
# Sample output from this run can be found in the files with "log." #
# located in the same directory. #
#===========================================================================#
units nano
dimension 3
boundary p p f
atom_style molecular
region mydomain block -24.0 24.0 -24.0 24.0 -24.0 24.0
#----------------------------------------------------------------------------
# Set up particles with n_nodes and decide if bonded or rigid
#----------------------------------------------------------------------------
variable n_nodes equal 4 # 1, 4, 6 are options with definitions below
variable is_bonded equal 0 # 0 or 1 (1 only if n_nodes > 1,
# bond parameters set for n_node = 4 case)
variable stpts equal 3 # 2, 3, 4 number of stencil points in any direction.
variable tstep equal 0.00025
if "${is_bonded} == 1" then "create_box 1 mydomain bond/types 1 extra/bond/per/atom 6" else "create_box 1 mydomain"
create_box 1 mydomain
Created orthogonal box = (-24 -24 -24) to (24 24 24)
1 by 1 by 1 MPI processor grid
if "${n_nodes} == 1" then "create_atoms 1 single 0.0 0.0 0.0" elif "${n_nodes} == 4" "create_atoms 1 single 0.0 0.0 0.204124" "create_atoms 1 single -0.096225 -0.166667 -0.0680414" "create_atoms 1 single -0.096225 0.166667 -0.0680414" "create_atoms 1 single 0.19245 0. -0.0680414" elif "${n_nodes} == 6" "create_atoms 1 single 0.204124 0.0000000 0.0000000" "create_atoms 1 single -0.204124 0.0000000 0.0000000" "create_atoms 1 single 0.0000000 0.204124 0.0000000" "create_atoms 1 single 0.0000000 -0.204124 0.0000000" "create_atoms 1 single 0.0000000 0.0000000 0.204124" "create_atoms 1 single 0.0000000 0.0000000 -0.204124"
create_atoms 1 single 0.0 0.0 0.204124
Created 1 atoms
using lattice units in orthogonal box = (-24 -24 -24) to (24 24 24)
create_atoms CPU = 0.001 seconds
create_atoms 1 single -0.096225 -0.166667 -0.0680414
Created 1 atoms
using lattice units in orthogonal box = (-24 -24 -24) to (24 24 24)
create_atoms CPU = 0.001 seconds
create_atoms 1 single -0.096225 0.166667 -0.0680414
Created 1 atoms
using lattice units in orthogonal box = (-24 -24 -24) to (24 24 24)
create_atoms CPU = 0.000 seconds
create_atoms 1 single 0.19245 0. -0.0680414
Created 1 atoms
using lattice units in orthogonal box = (-24 -24 -24) to (24 24 24)
create_atoms CPU = 0.000 seconds
#----------------------------------------------------------------------------
# Need a neighbor bin size smaller than the lattice-Boltzmann grid spacing
# to ensure that the particles belonging to a given processor remain inside
# that processors lattice-Boltzmann grid.
# The arguments for neigh_modify have been set to "delay 0 every 1", again
# to ensure that the particles belonging to a given processor remain inside
# that processors lattice-Boltzmann grid. However, these values can likely
# be somewhat increased without issue. If a problem does arise (a particle
# is outside of its processors LB grid) an error message is printed and
# the simulation is terminated.
#----------------------------------------------------------------------------
neighbor 0.3 bin
neigh_modify delay 0 every 1 check yes
comm_modify cutoff 2.5 # cutoff for communcation shoud be at least 2 dx
#----------------------------------------------------------------------------
# Implement a hard-sphere interactions between particles & create bonds
#----------------------------------------------------------------------------
pair_style lj/cut 5.88
pair_coeff * * 0.0 0.0 5.88
variable total_mass equal 0.002398 # particle mass
variable node_mass equal "v_total_mass / v_n_nodes"
mass * ${node_mass}
mass * 0.0005995
if "${is_bonded} == 1" then "bond_style harmonic" "bond_coeff 1 1.0 0.333333333" "create_bonds many all all 1 0.3 0.35"
#velocity all set 0.02 0.0 0.0
#----------------------------------------------------------------------------
# Define external forces (SHOULD COME BEFORE lb/fluid and lb/viscous FIXes)
# to drag particles through the fluid.
#----------------------------------------------------------------------------
variable total_force equal 1.0 # total external force on the particle
variable node_force equal "v_total_force / v_n_nodes"
variable oscillateY equal cos(step*0.0005)/(-0.03+400*v_tstep)/v_n_nodes
variable oscillateZ equal cos(step*0.0003)/(-0.03+400*v_tstep)/v_n_nodes
fix drag all addforce ${node_force} v_oscillateY v_oscillateZ
fix drag all addforce 0.25 v_oscillateY v_oscillateZ
#---------------------------------------------------------------------------
# Create a lattice-Boltzmann fluid covering the simulation domain.
# This fluid feels a force due to the particle (group all here)
# (however, this fix does not explicity apply a force back on to these
# particles...this is accomplished through the use of the lb/viscous fix).
# Use a fluid viscosity = 1.0, fluid density= 0.0009982071,(i.e. water) and
# lattice spacing dx=1.2.
# Different ".log" files in this directory show the output with the stencil
# option being stencil 2, stencil 3, and stencil 4 (triliner, IBM, Key's).
#----------------------------------------------------------------------------
timestep ${tstep}
timestep 0.00025
fix FL all lb/fluid 1 1.0 0.0009982071 stencil ${stpts} dx 1.2
fix FL all lb/fluid 1 1.0 0.0009982071 stencil 3 dx 1.2
Using a lattice-Boltzmann grid of 40 by 40 by 41 total grid points. (../fix_lb_fluid.cpp:486)
Local Grid Geometry created. (../fix_lb_fluid.cpp:1018)
#dumpxdmf 1000 fflow
#----------------------------------------------------------------------------
# Apply the force from the fluid to the particles, and integrate their
# motion, constraining them to move and rotate together as a single rigid
# spherical object or an elastically bonded object
#----------------------------------------------------------------------------
fix 2 all lb/viscous
if "${n_nodes} == 1 || ${is_bonded} == 1" then "fix 3 all nve" else "fix 3 all rigid group 1 all"
fix 3 all rigid group 1 all
1 rigid bodies with 4 atoms
#----------------------------------------------------------------------------
# Create variables containing the positions/velocity of the colloids center
# of mass.
#----------------------------------------------------------------------------
variable cmx equal xcm(all,x)
variable cmy equal xcm(all,y)
variable cmz equal xcm(all,z)
variable vcmx equal vcm(all,x)
variable vcmy equal vcm(all,y)
variable vcmz equal vcm(all,z)
if "${is_bonded} == 1" then "variable comdatafile string drag_nb${n_nodes}_st${stpts}_dt${tstep}.out" else "variable comdatafile string drag_n${n_nodes}_st${stpts}_dt${tstep}.out"
variable comdatafile string drag_n${n_nodes}_st${stpts}_dt${tstep}.out
variable comdatafile string drag_n4_st${stpts}_dt${tstep}.out
variable comdatafile string drag_n4_st3_dt${tstep}.out
variable comdatafile string drag_n4_st3_dt0.00025.out
#fix printCM all print 100 "$(step) ${cmx} ${cmy} ${cmz} ${vcmx} ${vcmy} ${vcmz}" file ${comdatafile} screen no
run 10000
CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE
Your simulation uses code contributions which should be cited:
- fix lb/fluid command:
@Article{Denniston et al.,
author = {C. Denniston, N. Afrasiabian, M.G. Cole-Andre,F.E. Mackay, S.T.T. Ollila, T. Whitehead},
title = {LAMMPS lb/fluid fix version 2: Improved Hydrodynamic Forces Implemented into LAMMPS through a lattice-Boltzmann fluid}, journal = {Comp.~Phys.~Comm.},
year = 2022,
volume = 275,
pages = {108318}
}
CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE
generated 0 of 0 mixed pair_coeff terms from geometric mixing rule
Neighbor list info ...
update every 1 steps, delay 0 steps, check yes
max neighbors/atom: 2000, page size: 100000
master list distance cutoff = 6.18
ghost atom cutoff = 6.18
binsize = 3.09, bins = 16 16 16
1 neighbor lists, perpetual/occasional/extra = 1 0 0
(1) pair lj/cut, perpetual
attributes: half, newton on
pair build: half/bin/newton
stencil: half/bin/3d
bin: standard
WARNING: Communication cutoff adjusted to 6.18 (../comm.cpp:732)
Per MPI rank memory allocation (min/avg/max) = 7.15 | 7.15 | 7.15 Mbytes
Step Temp E_pair E_mol TotEng Press
0 0 0 0 0 2.1529156e-12
10000 0.021008983 0 0 0.00043509092 1.4149298e-08
Loop time of 185.434 on 1 procs for 10000 steps with 4 atoms
Performance: 1164.837 ns/day, 0.021 hours/ns, 53.928 timesteps/s
100.0% CPU use with 1 MPI tasks x no OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 0.02024 | 0.02024 | 0.02024 | 0.0 | 0.01
Bond | 0.0011585 | 0.0011585 | 0.0011585 | 0.0 | 0.00
Neigh | 8.88e-05 | 8.88e-05 | 8.88e-05 | 0.0 | 0.00
Comm | 0.011615 | 0.011615 | 0.011615 | 0.0 | 0.01
Output | 8.32e-05 | 8.32e-05 | 8.32e-05 | 0.0 | 0.00
Modify | 185.36 | 185.36 | 185.36 | 0.0 | 99.96
Other | | 0.04469 | | | 0.02
Nlocal: 4 ave 4 max 4 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Nghost: 0 ave 0 max 0 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Neighs: 6 ave 6 max 6 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Total # of neighbors = 6
Ave neighs/atom = 1.5
Ave special neighs/atom = 0
Neighbor list builds = 9
Dangerous builds = 0
#run 100000
Total wall time: 0:03:05

View File

@ -0,0 +1,212 @@
LAMMPS (17 Feb 2022)
#===========================================================================#
# single particle drag tests #
# #
# Run consists of a colloidal particle being dragged with a constant force #
# through an LB-fluid. The colloidal particle could be single atom or #
# be a composite particle. Composite particles could be bonded or just #
# rigidly constrained to stay together. You can set flags in the script to #
# change these. #
# #
# Sample output from this run can be found in the files with "log." #
# located in the same directory. #
#===========================================================================#
units nano
dimension 3
boundary p p f
atom_style molecular
region mydomain block -24.0 24.0 -24.0 24.0 -24.0 24.0
#----------------------------------------------------------------------------
# Set up particles with n_nodes and decide if bonded or rigid
#----------------------------------------------------------------------------
variable n_nodes equal 4 # 1, 4, 6 are options with definitions below
variable is_bonded equal 0 # 0 or 1 (1 only if n_nodes > 1,
# bond parameters set for n_node = 4 case)
variable stpts equal 3 # 2, 3, 4 number of stencil points in any direction.
variable tstep equal 0.00025
if "${is_bonded} == 1" then "create_box 1 mydomain bond/types 1 extra/bond/per/atom 6" else "create_box 1 mydomain"
create_box 1 mydomain
Created orthogonal box = (-24 -24 -24) to (24 24 24)
1 by 2 by 2 MPI processor grid
if "${n_nodes} == 1" then "create_atoms 1 single 0.0 0.0 0.0" elif "${n_nodes} == 4" "create_atoms 1 single 0.0 0.0 0.204124" "create_atoms 1 single -0.096225 -0.166667 -0.0680414" "create_atoms 1 single -0.096225 0.166667 -0.0680414" "create_atoms 1 single 0.19245 0. -0.0680414" elif "${n_nodes} == 6" "create_atoms 1 single 0.204124 0.0000000 0.0000000" "create_atoms 1 single -0.204124 0.0000000 0.0000000" "create_atoms 1 single 0.0000000 0.204124 0.0000000" "create_atoms 1 single 0.0000000 -0.204124 0.0000000" "create_atoms 1 single 0.0000000 0.0000000 0.204124" "create_atoms 1 single 0.0000000 0.0000000 -0.204124"
create_atoms 1 single 0.0 0.0 0.204124
Created 1 atoms
using lattice units in orthogonal box = (-24 -24 -24) to (24 24 24)
create_atoms CPU = 0.001 seconds
create_atoms 1 single -0.096225 -0.166667 -0.0680414
Created 1 atoms
using lattice units in orthogonal box = (-24 -24 -24) to (24 24 24)
create_atoms CPU = 0.000 seconds
create_atoms 1 single -0.096225 0.166667 -0.0680414
Created 1 atoms
using lattice units in orthogonal box = (-24 -24 -24) to (24 24 24)
create_atoms CPU = 0.000 seconds
create_atoms 1 single 0.19245 0. -0.0680414
Created 1 atoms
using lattice units in orthogonal box = (-24 -24 -24) to (24 24 24)
create_atoms CPU = 0.001 seconds
#----------------------------------------------------------------------------
# Need a neighbor bin size smaller than the lattice-Boltzmann grid spacing
# to ensure that the particles belonging to a given processor remain inside
# that processors lattice-Boltzmann grid.
# The arguments for neigh_modify have been set to "delay 0 every 1", again
# to ensure that the particles belonging to a given processor remain inside
# that processors lattice-Boltzmann grid. However, these values can likely
# be somewhat increased without issue. If a problem does arise (a particle
# is outside of its processors LB grid) an error message is printed and
# the simulation is terminated.
#----------------------------------------------------------------------------
neighbor 0.3 bin
neigh_modify delay 0 every 1 check yes
comm_modify cutoff 2.5 # cutoff for communcation shoud be at least 2 dx
#----------------------------------------------------------------------------
# Implement a hard-sphere interactions between particles & create bonds
#----------------------------------------------------------------------------
pair_style lj/cut 5.88
pair_coeff * * 0.0 0.0 5.88
variable total_mass equal 0.002398 # particle mass
variable node_mass equal "v_total_mass / v_n_nodes"
mass * ${node_mass}
mass * 0.0005995
if "${is_bonded} == 1" then "bond_style harmonic" "bond_coeff 1 1.0 0.333333333" "create_bonds many all all 1 0.3 0.35"
#velocity all set 0.02 0.0 0.0
#----------------------------------------------------------------------------
# Define external forces (SHOULD COME BEFORE lb/fluid and lb/viscous FIXes)
# to drag particles through the fluid.
#----------------------------------------------------------------------------
variable total_force equal 1.0 # total external force on the particle
variable node_force equal "v_total_force / v_n_nodes"
variable oscillateY equal cos(step*0.0005)/(-0.03+400*v_tstep)/v_n_nodes
variable oscillateZ equal cos(step*0.0003)/(-0.03+400*v_tstep)/v_n_nodes
fix drag all addforce ${node_force} v_oscillateY v_oscillateZ
fix drag all addforce 0.25 v_oscillateY v_oscillateZ
#---------------------------------------------------------------------------
# Create a lattice-Boltzmann fluid covering the simulation domain.
# This fluid feels a force due to the particle (group all here)
# (however, this fix does not explicity apply a force back on to these
# particles...this is accomplished through the use of the lb/viscous fix).
# Use a fluid viscosity = 1.0, fluid density= 0.0009982071,(i.e. water) and
# lattice spacing dx=1.2.
# Different ".log" files in this directory show the output with the stencil
# option being stencil 2, stencil 3, and stencil 4 (triliner, IBM, Key's).
#----------------------------------------------------------------------------
timestep ${tstep}
timestep 0.00025
fix FL all lb/fluid 1 1.0 0.0009982071 stencil ${stpts} dx 1.2
fix FL all lb/fluid 1 1.0 0.0009982071 stencil 3 dx 1.2
Using a lattice-Boltzmann grid of 40 by 40 by 41 total grid points. (../fix_lb_fluid.cpp:486)
Local Grid Geometry created. (../fix_lb_fluid.cpp:1018)
#dumpxdmf 1000 fflow
#----------------------------------------------------------------------------
# Apply the force from the fluid to the particles, and integrate their
# motion, constraining them to move and rotate together as a single rigid
# spherical object or an elastically bonded object
#----------------------------------------------------------------------------
fix 2 all lb/viscous
if "${n_nodes} == 1 || ${is_bonded} == 1" then "fix 3 all nve" else "fix 3 all rigid group 1 all"
fix 3 all rigid group 1 all
1 rigid bodies with 4 atoms
#----------------------------------------------------------------------------
# Create variables containing the positions/velocity of the colloids center
# of mass.
#----------------------------------------------------------------------------
variable cmx equal xcm(all,x)
variable cmy equal xcm(all,y)
variable cmz equal xcm(all,z)
variable vcmx equal vcm(all,x)
variable vcmy equal vcm(all,y)
variable vcmz equal vcm(all,z)
if "${is_bonded} == 1" then "variable comdatafile string drag_nb${n_nodes}_st${stpts}_dt${tstep}.out" else "variable comdatafile string drag_n${n_nodes}_st${stpts}_dt${tstep}.out"
variable comdatafile string drag_n${n_nodes}_st${stpts}_dt${tstep}.out
variable comdatafile string drag_n4_st${stpts}_dt${tstep}.out
variable comdatafile string drag_n4_st3_dt${tstep}.out
variable comdatafile string drag_n4_st3_dt0.00025.out
#fix printCM all print 100 "$(step) ${cmx} ${cmy} ${cmz} ${vcmx} ${vcmy} ${vcmz}" file ${comdatafile} screen no
run 10000
CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE
Your simulation uses code contributions which should be cited:
- fix lb/fluid command:
@Article{Denniston et al.,
author = {C. Denniston, N. Afrasiabian, M.G. Cole-Andre,F.E. Mackay, S.T.T. Ollila, T. Whitehead},
title = {LAMMPS lb/fluid fix version 2: Improved Hydrodynamic Forces Implemented into LAMMPS through a lattice-Boltzmann fluid}, journal = {Comp.~Phys.~Comm.},
year = 2022,
volume = 275,
pages = {108318}
}
CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE
generated 0 of 0 mixed pair_coeff terms from geometric mixing rule
Neighbor list info ...
update every 1 steps, delay 0 steps, check yes
max neighbors/atom: 2000, page size: 100000
master list distance cutoff = 6.18
ghost atom cutoff = 6.18
binsize = 3.09, bins = 16 16 16
1 neighbor lists, perpetual/occasional/extra = 1 0 0
(1) pair lj/cut, perpetual
attributes: half, newton on
pair build: half/bin/newton
stencil: half/bin/3d
bin: standard
WARNING: Communication cutoff adjusted to 6.18 (../comm.cpp:732)
Per MPI rank memory allocation (min/avg/max) = 6.763 | 6.857 | 7.138 Mbytes
Step Temp E_pair E_mol TotEng Press
0 0 0 0 0 2.1529156e-12
10000 0.021008983 0 0 0.00043509092 1.4149298e-08
Loop time of 154.466 on 4 procs for 10000 steps with 4 atoms
Performance: 1398.367 ns/day, 0.017 hours/ns, 64.739 timesteps/s
99.9% CPU use with 4 MPI tasks x no OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 0.013169 | 0.01792 | 0.021577 | 2.3 | 0.01
Bond | 0.0019565 | 0.0021447 | 0.0023408 | 0.4 | 0.00
Neigh | 7.55e-05 | 9.69e-05 | 0.0001173 | 0.0 | 0.00
Comm | 0.07056 | 0.076818 | 0.084499 | 2.1 | 0.05
Output | 2.85e-05 | 4.4925e-05 | 9.24e-05 | 0.0 | 0.00
Modify | 154.16 | 154.17 | 154.18 | 0.1 | 99.81
Other | | 0.1998 | | | 0.13
Nlocal: 1 ave 4 max 0 min
Histogram: 3 0 0 0 0 0 0 0 0 1
Nghost: 3 ave 4 max 0 min
Histogram: 1 0 0 0 0 0 0 0 0 3
Neighs: 1.5 ave 6 max 0 min
Histogram: 3 0 0 0 0 0 0 0 0 1
Total # of neighbors = 6
Ave neighs/atom = 1.5
Ave special neighs/atom = 0
Neighbor list builds = 9
Dangerous builds = 0
#run 100000
Total wall time: 0:02:34

View File

@ -1,75 +0,0 @@
LAMMPS (29 Sep 2021 - Update 1)
Created orthogonal box = (-24.000000 -24.000000 -24.000000) to (24.000000 24.000000 24.000000)
1 by 2 by 2 MPI processor grid
Created 1 atoms
using lattice units in orthogonal box = (-24.000000 -24.000000 -24.000000) to (24.000000 24.000000 24.000000)
create_atoms CPU = 0.000 seconds
Created 1 atoms
using lattice units in orthogonal box = (-24.000000 -24.000000 -24.000000) to (24.000000 24.000000 24.000000)
create_atoms CPU = 0.000 seconds
Created 1 atoms
using lattice units in orthogonal box = (-24.000000 -24.000000 -24.000000) to (24.000000 24.000000 24.000000)
create_atoms CPU = 0.000 seconds
Created 1 atoms
using lattice units in orthogonal box = (-24.000000 -24.000000 -24.000000) to (24.000000 24.000000 24.000000)
create_atoms CPU = 0.008 seconds
Using a lattice-Boltzmann grid of 40 by 40 by 41 total grid points. (../fix_lb_fluid.cpp:475)
Local Grid Geometry created. (../fix_lb_fluid.cpp:1021)
First Run initialized
1 rigid bodies with 4 atoms
Neighbor list info ...
update every 1 steps, delay 0 steps, check yes
max neighbors/atom: 2000, page size: 100000
master list distance cutoff = 6.18
ghost atom cutoff = 6.18
binsize = 3.09, bins = 16 16 16
1 neighbor lists, perpetual/occasional/extra = 1 0 0
(1) pair lj/cut, perpetual
attributes: half, newton on
pair build: half/bin/newton
stencil: half/bin/3d
bin: standard
Setting up Verlet run ...
Unit style : nano
Current step : 0
Time step : 0.00025
WARNING: Communication cutoff adjusted to 6.18 (../comm.cpp:739)
Per MPI rank memory allocation (min/avg/max) = 6.763 | 6.857 | 7.138 Mbytes
Step Temp E_pair E_mol TotEng Press
0 0 0 0 0 2.1529156e-12
10000 0.021008983 0 0 0.00043509092 1.4149298e-08
Loop time of 146.77 on 4 procs for 10000 steps with 4 atoms
Performance: 1471.691 ns/day, 0.016 hours/ns, 68.134 timesteps/s
99.9% CPU use with 4 MPI tasks x no OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 0.013542 | 0.017622 | 0.022577 | 2.8 | 0.01
Bond | 0.001794 | 0.0018995 | 0.0021441 | 0.3 | 0.00
Neigh | 6.97e-05 | 0.00011273 | 0.0001386 | 0.0 | 0.00
Comm | 0.10125 | 0.13954 | 0.17353 | 7.3 | 0.10
Output | 6.19e-05 | 0.00030725 | 0.0003896 | 0.0 | 0.00
Modify | 146.37 | 146.4 | 146.45 | 0.2 | 99.75
Other | | 0.2122 | | | 0.14
Nlocal: 1.00000 ave 4 max 0 min
Histogram: 3 0 0 0 0 0 0 0 0 1
Nghost: 3.00000 ave 4 max 0 min
Histogram: 1 0 0 0 0 0 0 0 0 3
Neighs: 1.50000 ave 6 max 0 min
Histogram: 3 0 0 0 0 0 0 0 0 1
Total # of neighbors = 6
Ave neighs/atom = 1.5000000
Ave special neighs/atom = 0.0000000
Neighbor list builds = 9
Dangerous builds = 0
LB equilibriumDist time: 25.615363
LB update time: 62.136116
LB PCalc time: 36.863810
LB fluidForce time: 11.645698
LB CorrectU time: 9.399909
Total wall time: 0:02:26

View File

@ -4,8 +4,9 @@
# Run consists of 2 colloidal particles undergoing Brownian motion in a #
# thermal lattice-Boltzmann fluid. #
# #
# Sample output from this run can be found in the file: #
# 'microrheology_setgamma.out' #
# If you uncomment the "fix printCM..." line, sample output from this run #
# can be found in the file: #
# 'twocolloid.out' #
#===========================================================================#
units nano
@ -104,7 +105,7 @@ variable x2 equal x[242]
variable y2 equal y[242]
variable z2 equal z[242]
fix printCM all print 100 "$(step) ${x1} ${y1} ${z1} ${x2} ${y2} ${z2}" file twocolloid.data screen no
#fix printCM all print 100 "$(step) ${x1} ${y1} ${z1} ${x2} ${y2} ${z2}" file twocolloid.out screen no
thermo_style custom step v_x1 v_y1 v_z1 v_x2 v_y2 v_z2
thermo 100

View File

@ -0,0 +1,216 @@
LAMMPS (17 Feb 2022)
#===========================================================================#
# 2 particle microrheology test #
# #
# Run consists of 2 colloidal particles undergoing Brownian motion in a #
# thermal lattice-Boltzmann fluid. #
# #
# If you uncomment the "fix printCM..." line, sample output from this run #
# can be found in the file: #
# 'twocolloid.out' #
#===========================================================================#
units nano
dimension 3
boundary p p p
atom_style molecular
read_data data.two
Reading data file ...
orthogonal box = (-48 -48 -48) to (48 48 48)
1 by 2 by 2 MPI processor grid
reading atoms ...
482 atoms
Finding 1-2 1-3 1-4 neighbors ...
special bond factors lj: 0 0 0
special bond factors coul: 0 0 0
0 = max # of 1-2 neighbors
0 = max # of 1-3 neighbors
0 = max # of 1-4 neighbors
1 = max # of special neighbors
special bonds CPU = 0.000 seconds
read_data CPU = 0.033 seconds
#----------------------------------------------------------------------------
# Need a neighbor bin size smaller than the lattice-Boltzmann grid spacing
# to ensure that the particles belonging to a given processor remain inside
# that processors lattice-Boltzmann grid.
# The arguments for neigh_modify have been set to "delay 0 every 1", again
# to ensure that the particles belonging to a given processor remain inside
# that processors lattice-Boltzmann grid. However, these values can likely
# be somewhat increased without issue. If a problem does arise (a particle
# is outside of its processors LB grid) an error message is printed and
# the simulation is terminated.
#----------------------------------------------------------------------------
neighbor 0.3 bin
neigh_modify delay 0 every 1
neigh_modify exclude type 2 2
neigh_modify exclude type 2 1
comm_modify cutoff 2.5 # cutoff for communcation shoud be at least 2 dx
#----------------------------------------------------------------------------
# Implement a hard-sphere interaction between the particles at the center of
# each colloidal object (use a truncated and shifted Lennard-Jones
# potential).
#----------------------------------------------------------------------------
pair_style lj/cut 5.88
pair_coeff * * 0.0 0.0 5.88
pair_coeff 1 1 100.0 5.238484463 5.88
pair_modify shift yes
mass * 0.0002398
timestep 0.00025
#----------------------------------------------------------------------------
# ForceAtoms are the particles at the center of each colloidal object which
# do not interact with the fluid, but are used to implement the hard-sphere
# interactions.
# FluidAtoms are the particles representing the surface of the colloidal
# object which do interact with the fluid.
#----------------------------------------------------------------------------
group ForceAtoms type 1
2 atoms in group ForceAtoms
group FluidAtoms type 2
480 atoms in group FluidAtoms
#---------------------------------------------------------------------------
# Create a lattice-Boltzmann fluid covering the simulation domain.
# This fluid feels a force due to the particles specified through FluidAtoms
# (however, this fix does not explicitly apply a force back on to these
# particles...this is accomplished through the use of the lb/viscous fix).
# Use a fluid viscosity = 1.0, fluid density= 0.0009982071 (water), and a
# lattice spacing dx=1.2.
# Use the trilinear interpolation stencil to distribute the force from
# a given particle onto the fluid mesh.
# Use a thermal lattice-Boltzmann fluid (temperature 300K, random number
# seed=2762). This enables the particles to undergo Brownian motion in
# the fluid.
#----------------------------------------------------------------------------
fix 1 FluidAtoms lb/fluid 1 1.0 0.0009982071 dx 1.2 stencil 2 noise 300.0 2762
Using a lattice-Boltzmann grid of 80 by 80 by 80 total grid points. (../fix_lb_fluid.cpp:486)
Local Grid Geometry created. (../fix_lb_fluid.cpp:1018)
#----------------------------------------------------------------------------
# Apply the force due to the fluid onto the FluidAtoms particles (again,
# these atoms represent the surface of the colloidal object, which should
# interact with the fluid).
#----------------------------------------------------------------------------
fix 2 FluidAtoms lb/viscous
#----------------------------------------------------------------------------
# Each colloidal object (spherical shell of particles and central particle)
# is specified as a separate molecule in the confinedcolloids.dat data
# file. Integrate the motion of these sets of particles as rigid objects
# which each move and rotate together.
#----------------------------------------------------------------------------
fix 3 all rigid molecule
2 rigid bodies with 482 atoms
#----------------------------------------------------------------------------
# To ensure that numerical errors do not lead to a buildup of momentum in the
# system, the momentum_lb fix is used every 50000 timesteps to zero out the
# total (particle plus fluid) momentum in the system.
#----------------------------------------------------------------------------
fix 4 all lb/momentum 50000 linear 1 1 1
#----------------------------------------------------------------------------
# Create variables containing the positions of the central atoms (these
# values should correspond to the center of mass of each composite
# colloidal particle), and output these quantities to the screen.
#----------------------------------------------------------------------------
variable x1 equal x[1]
variable y1 equal y[1]
variable z1 equal z[1]
variable x2 equal x[242]
variable y2 equal y[242]
variable z2 equal z[242]
#fix printCM all print 100 "$(step) ${x1} ${y1} ${z1} ${x2} ${y2} ${z2}" file twocolloid.out screen no
thermo_style custom step v_x1 v_y1 v_z1 v_x2 v_y2 v_z2
thermo 100
run 2000
CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE
Your simulation uses code contributions which should be cited:
- fix lb/fluid command:
@Article{Denniston et al.,
author = {C. Denniston, N. Afrasiabian, M.G. Cole-Andre,F.E. Mackay, S.T.T. Ollila, T. Whitehead},
title = {LAMMPS lb/fluid fix version 2: Improved Hydrodynamic Forces Implemented into LAMMPS through a lattice-Boltzmann fluid}, journal = {Comp.~Phys.~Comm.},
year = 2022,
volume = 275,
pages = {108318}
}
CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE
generated 0 of 1 mixed pair_coeff terms from geometric mixing rule
Neighbor list info ...
update every 1 steps, delay 0 steps, check yes
max neighbors/atom: 2000, page size: 100000
master list distance cutoff = 6.18
ghost atom cutoff = 6.18
binsize = 3.09, bins = 32 32 32
1 neighbor lists, perpetual/occasional/extra = 1 0 0
(1) pair lj/cut, perpetual
attributes: half, newton on
pair build: half/bin/newton
stencil: half/bin/3d
bin: standard
WARNING: Communication cutoff adjusted to 6.18 (../comm.cpp:732)
Per MPI rank memory allocation (min/avg/max) = 7.071 | 7.133 | 7.196 Mbytes
Step v_x1 v_y1 v_z1 v_x2 v_y2 v_z2
0 -6 -6 -6 6 6 6
100 -5.9728258 -6.0005827 -5.9442685 5.9742978 6.0301171 5.9331116
200 -5.9160265 -5.9832234 -5.9485519 6.0258914 6.0954103 5.8748455
300 -5.859605 -5.9503512 -5.9827305 6.0472442 6.0610438 5.8531801
400 -5.8495832 -5.923183 -6.0205706 6.1502952 5.9975714 5.8964144
500 -5.8229958 -5.9256007 -5.963852 6.1738854 5.8961268 5.8723276
600 -5.7813718 -5.9423848 -5.9309537 6.2083705 5.866578 5.9308017
700 -5.7652512 -5.8737534 -5.9083059 6.2502919 5.757157 5.9690204
800 -5.7586139 -5.8559089 -5.8863028 6.2708214 5.7307727 5.9443721
900 -5.7200104 -5.8603762 -5.8944329 6.28719 5.7723113 5.9660136
1000 -5.7224239 -5.8487095 -5.9013071 6.3156272 5.8026721 5.9558441
1100 -5.576187 -5.8604571 -5.9254376 6.3778561 5.7655467 5.9702619
1200 -5.5348377 -5.8086817 -5.9982829 6.3979309 5.8028207 5.930579
1300 -5.5937473 -5.7733457 -6.0596682 6.3630776 5.937045 5.9662317
1400 -5.6207137 -5.7027974 -6.0641922 6.3079248 5.9631009 5.9707377
1500 -5.6648138 -5.6229854 -6.0989624 6.2784552 5.9448163 5.9254903
1600 -5.6905161 -5.5479418 -6.0704567 6.3133179 5.941372 5.8933924
1700 -5.6878847 -5.5415566 -6.0222328 6.3633902 5.9957476 5.7994115
1800 -5.6500526 -5.5204331 -5.9767389 6.4081067 5.9651289 5.7297962
1900 -5.7221835 -5.4972898 -5.9670446 6.4470403 5.9161644 5.6902098
2000 -5.7427378 -5.4637388 -6.0196569 6.3668465 5.9127502 5.6931183
Loop time of 358.9 on 4 procs for 2000 steps with 482 atoms
Performance: 120.368 ns/day, 0.199 hours/ns, 5.573 timesteps/s
100.0% CPU use with 4 MPI tasks x no OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 0.0026566 | 0.0054654 | 0.0084461 | 3.6 | 0.00
Bond | 0.0003946 | 0.000476 | 0.0005288 | 0.0 | 0.00
Neigh | 0.0011268 | 0.0045933 | 0.0080717 | 5.0 | 0.00
Comm | 0.053156 | 0.057764 | 0.062919 | 1.9 | 0.02
Output | 0.0009824 | 0.0018621 | 0.0043906 | 3.4 | 0.00
Modify | 358.62 | 358.63 | 358.64 | 0.0 | 99.93
Other | | 0.1963 | | | 0.05
Nlocal: 120.5 ave 241 max 0 min
Histogram: 2 0 0 0 0 0 0 0 0 2
Nghost: 181 ave 297 max 80 min
Histogram: 2 0 0 0 0 0 0 0 1 1
Neighs: 0 ave 0 max 0 min
Histogram: 4 0 0 0 0 0 0 0 0 0
Total # of neighbors = 0
Ave neighs/atom = 0
Ave special neighs/atom = 0
Neighbor list builds = 20
Dangerous builds = 0
#run 2000000000
Total wall time: 0:05:59

View File

@ -1,96 +0,0 @@
LAMMPS (29 Sep 2021 - Update 1)
Reading data file ...
orthogonal box = (-48.000000 -48.000000 -48.000000) to (48.000000 48.000000 48.000000)
1 by 2 by 2 MPI processor grid
reading atoms ...
482 atoms
Finding 1-2 1-3 1-4 neighbors ...
special bond factors lj: 0 0 0
special bond factors coul: 0 0 0
0 = max # of 1-2 neighbors
0 = max # of 1-3 neighbors
0 = max # of 1-4 neighbors
1 = max # of special neighbors
special bonds CPU = 0.000 seconds
read_data CPU = 0.014 seconds
2 atoms in group ForceAtoms
480 atoms in group FluidAtoms
Using a lattice-Boltzmann grid of 80 by 80 by 80 total grid points. (../fix_lb_fluid.cpp:475)
Local Grid Geometry created. (../fix_lb_fluid.cpp:1021)
First Run initialized
2 rigid bodies with 482 atoms
Neighbor list info ...
update every 1 steps, delay 0 steps, check yes
max neighbors/atom: 2000, page size: 100000
master list distance cutoff = 6.18
ghost atom cutoff = 6.18
binsize = 3.09, bins = 32 32 32
1 neighbor lists, perpetual/occasional/extra = 1 0 0
(1) pair lj/cut, perpetual
attributes: half, newton on
pair build: half/bin/newton
stencil: half/bin/3d
bin: standard
Setting up Verlet run ...
Unit style : nano
Current step : 0
Time step : 0.00025
WARNING: Communication cutoff adjusted to 6.18 (../comm.cpp:739)
Per MPI rank memory allocation (min/avg/max) = 7.071 | 7.133 | 7.196 Mbytes
Step v_x1 v_y1 v_z1 v_x2 v_y2 v_z2
0 -6 -6 -6 6 6 6
100 -5.9728258 -6.0005827 -5.9442685 5.9742978 6.0301171 5.9331116
200 -5.9160265 -5.9832234 -5.9485519 6.0258914 6.0954103 5.8748455
300 -5.859605 -5.9503512 -5.9827305 6.0472442 6.0610438 5.8531801
400 -5.8495832 -5.923183 -6.0205706 6.1502952 5.9975714 5.8964144
500 -5.8229958 -5.9256007 -5.963852 6.1738854 5.8961268 5.8723276
600 -5.7813718 -5.9423848 -5.9309537 6.2083705 5.866578 5.9308017
700 -5.7652512 -5.8737534 -5.9083059 6.2502919 5.757157 5.9690204
800 -5.7586139 -5.8559089 -5.8863028 6.2708214 5.7307727 5.9443721
900 -5.7200104 -5.8603762 -5.8944329 6.28719 5.7723113 5.9660136
1000 -5.7224239 -5.8487095 -5.9013071 6.3156272 5.8026721 5.9558441
1100 -5.576187 -5.8604571 -5.9254376 6.3778561 5.7655467 5.9702619
1200 -5.5348377 -5.8086817 -5.9982829 6.3979309 5.8028207 5.930579
1300 -5.5937473 -5.7733457 -6.0596682 6.3630776 5.937045 5.9662317
1400 -5.6207137 -5.7027974 -6.0641922 6.3079248 5.9631009 5.9707377
1500 -5.6648138 -5.6229854 -6.0989624 6.2784552 5.9448163 5.9254903
1600 -5.6905161 -5.5479418 -6.0704567 6.3133179 5.941372 5.8933924
1700 -5.6878847 -5.5415566 -6.0222328 6.3633902 5.9957476 5.7994115
1800 -5.6500526 -5.5204331 -5.9767389 6.4081067 5.9651289 5.7297962
1900 -5.7221835 -5.4972898 -5.9670446 6.4470403 5.9161644 5.6902098
2000 -5.7427378 -5.4637388 -6.0196569 6.3668465 5.9127502 5.6931183
Loop time of 337.139 on 4 procs for 2000 steps with 482 atoms
Performance: 128.137 ns/day, 0.187 hours/ns, 5.932 timesteps/s
100.0% CPU use with 4 MPI tasks x no OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 0.0025147 | 0.0050251 | 0.0075003 | 3.5 | 0.00
Bond | 0.0004674 | 0.00047853 | 0.0004909 | 0.0 | 0.00
Neigh | 0.0005738 | 0.0036401 | 0.0068179 | 5.0 | 0.00
Comm | 0.056088 | 0.063835 | 0.071507 | 2.3 | 0.02
Output | 0.0026851 | 0.0074911 | 0.0090938 | 3.2 | 0.00
Modify | 336.86 | 336.88 | 336.9 | 0.1 | 99.92
Other | | 0.1791 | | | 0.05
Nlocal: 120.500 ave 241 max 0 min
Histogram: 2 0 0 0 0 0 0 0 0 2
Nghost: 181.000 ave 297 max 80 min
Histogram: 2 0 0 0 0 0 0 0 1 1
Neighs: 0.00000 ave 0 max 0 min
Histogram: 4 0 0 0 0 0 0 0 0 0
Total # of neighbors = 0
Ave neighs/atom = 0.0000000
Ave special neighs/atom = 0.0000000
Neighbor list builds = 20
Dangerous builds = 0
LB equilibriumDist time: 185.672949
LB update time: 78.463559
LB PCalc time: 43.293723
LB fluidForce time: 16.211223
LB CorrectU time: 13.017318
Total wall time: 0:05:37

View File

@ -1,22 +0,0 @@
# Fix print output for fix printCM
0 -6 -6 -6 6 6 6
100 -5.9728258390363 -6.00058270846511 -5.94426846143197 5.97429784670672 6.03011708896542 5.93311158594508
200 -5.91602646162167 -5.9832233858717 -5.94855193796953 6.02589142858035 6.09541031873856 5.87484550008362
300 -5.85960503513375 -5.95035117058311 -5.98273054879889 6.04724424485127 6.06104384188688 5.85318010531015
400 -5.84958318427899 -5.92318300778995 -6.0205706276695 6.15029520354417 5.99757137700149 5.8964143570282
500 -5.8229957990533 -5.92560068752847 -5.96385200914485 6.17388543466333 5.89612680507036 5.87232755414486
600 -5.78137178827873 -5.94238476653933 -5.93095367414376 6.20837053568049 5.86657804207129 5.93080172251295
700 -5.76525119778907 -5.87375336226389 -5.9083058512149 6.25029186802515 5.75715699239055 5.9690203907764
800 -5.75861389468995 -5.85590887490732 -5.88630276459582 6.2708213544238 5.73077273842208 5.94437207297023
900 -5.72001041550187 -5.86037621773229 -5.89443290411243 6.28718998830012 5.77231130470684 5.96601364415703
1000 -5.72242391722508 -5.84870945302511 -5.90130708799915 6.31562723862135 5.802672067251 5.95584407951942
1100 -5.57618701057034 -5.8604571230511 -5.92543761678951 6.37785612529918 5.7655466995849 5.97026185233192
1200 -5.53483774079645 -5.80868168559119 -5.9982829389625 6.39793085074462 5.80282069928233 5.93057895371063
1300 -5.59374730222166 -5.77334569741735 -6.05966819406177 6.36307756870586 5.93704500047883 5.9662317452964
1400 -5.62071369379104 -5.70279744043298 -6.06419223778362 6.30792475952201 5.96310087566106 5.97073771117513
1500 -5.66481383664855 -5.62298536173757 -6.0989623809087 6.2784552368717 5.94481631143006 5.92549033887773
1600 -5.69051607540066 -5.54794180980933 -6.07045673682844 6.31331787941986 5.94137200838204 5.89339244198547
1700 -5.68788472257104 -5.54155660268121 -6.0222328152897 6.36339021564644 5.9957476424637 5.79941151400367
1800 -5.65005256416692 -5.52043305892636 -5.97673894263548 6.4081066664191 5.96512894011256 5.72979619115097
1900 -5.72218349101654 -5.49728980937974 -5.96704455955022 6.44704025453208 5.91616438703042 5.69020975592141
2000 -5.74273781133623 -5.46373877287724 -6.0196569280068 6.36684647495879 5.91275021020995 5.6931183094732

View File

@ -1,307 +0,0 @@
<?xml version="1.0"?>
<VTKFile type="PolyData" version="0.1" byte_order="LittleEndian" header_type="UInt32" compressor="vtkZLibDataCompressor">
<PolyData>
<Piece NumberOfPoints="320" NumberOfVerts="320" NumberOfLines="0" NumberOfStrips="0" NumberOfPolys="0">
<PointData>
</PointData>
<CellData>
</CellData>
<Points>
<DataArray type="Float32" Name="Points" NumberOfComponents="3" format="ascii" RangeMin="16.199999853" RangeMax="16.20000143">
-1.2765063047 -1.9475830793 -16.031764984 -2.0996208191 0.56559312344 -16.053401947
-1.4108068943 -6.399541378 -14.81538105 -5.4746732712 -3.4608016014 -14.84893322
-2.7810842991 -4.0221128464 -15.444357872 -6.384250164 -0.6784542799 -14.873502731
-4.541870594 1.3574925661 -15.490921974 -4.8472628593 4.0945124626 -14.90567112
-2.4847655296 5.8199253082 -14.912895203 -1.4070286751 -10.581619263 -12.185631752
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<Attribute Name="velocity" AttributeType="Vector">
<DataItem ItemType="Function" Function="$0 * 2.000000" Dimensions="61 51 61 3">
<DataItem Precision="8" Format="Binary" Seek="1518168" Dimensions="61 51 61 3">
fflow.raw
</DataItem>
</DataItem>
</Attribute>
</Grid>
<Grid Name="2500">
<Time Value="1.000000"/>
<Topology TopologyType="3DCoRectMesh" Dimensions="61 51 61"/>
<Geometry GeometryType="ORIGIN_DXDYDZ">
<DataItem Dimensions="3">
-120.000000 -100.000000 -120.000000
</DataItem>
<DataItem Dimensions="3">
4.000000 4.000000 4.000000
</DataItem>
</Geometry>
<Attribute Name="density">
<DataItem ItemType="Function" Function="$0 * 1.000000" Dimensions="61 51 61">
<DataItem Precision="8" Format="Binary" Seek="6072672" Dimensions="61 51 61">
fflow.raw
</DataItem>
</DataItem>
</Attribute>
<Attribute Name="velocity" AttributeType="Vector">
<DataItem ItemType="Function" Function="$0 * 2.000000" Dimensions="61 51 61 3">
<DataItem Precision="8" Format="Binary" Seek="7590840" Dimensions="61 51 61 3">
fflow.raw
</DataItem>
</DataItem>
</Attribute>
</Grid>
</Grid>
</Domain>
</Xdmf>

View File

@ -2,7 +2,7 @@
# Rigid sphere freely moving in a system with pressure driven flow through #
# a pit geometry. #
# #
# The example produces several output files: #
# If uncommented, the example produces several output files: #
# 'flow.xdmf', 'flow.raw' ... xdmf and accompanying binary file for the #
# fluid density and velocity which can be read#
# and plotted using Paraview. #
@ -11,7 +11,6 @@
# compiled with the vtk package). These filed#
# can also be read and plotted using Paraview.#
# XX is the timestep of the dump output. #
# 'screen.out' ... terminal output from the run. #
#===========================================================================#
units micro
@ -33,7 +32,7 @@ atom_style atomic
neighbor 1.0 bin
neigh_modify delay 0 every 1
read_data one_radius16d2.data
read_data data.one_radius16d2
#----------------------------------------------------------------------------
# None of the particles interact with one another.
@ -66,7 +65,7 @@ velocity all set 0.0 0.0 0.0 units box
# The initial conditions are set as linear interpolation between boundary
# values using the linearInit option.
#-----------------------------------------------------------------------------
fix 1 all lb/fluid 1 1.0 1.0 dx 4.0 dumpxdmf 2500 fflow 0 linearInit pressurebcx 0.01 npits 2 20 40 5 0 wp 30
fix 1 all lb/fluid 1 1.0 1.0 dx 4.0 linearInit pressurebcx 0.01 npits 2 20 40 5 0 wp 30 # dumpxdmf 2500 fflow 0
#-----------------------------------------------------------------------------
# You can get some other interesting geometries by replacing the npits options
@ -112,6 +111,6 @@ variable omegaz equal omega(all,z)
thermo_style custom step f_1[2] v_vx v_vy v_vz v_omegax v_omegay v_omegaz
thermo 500
dump dumpvtk all vtk 2500 dumpatoms*.vtp vx vy vz
#dump dumpvtk all vtk 2500 dumpatoms*.vtp vx vy vz
run 2500

View File

@ -0,0 +1,193 @@
LAMMPS (17 Feb 2022)
#===========================================================================#
# Rigid sphere freely moving in a system with pressure driven flow through #
# a pit geometry. #
# #
# If uncommented, the example produces several output files: #
# 'flow.xdmf', 'flow.raw' ... xdmf and accompanying binary file for the #
# fluid density and velocity which can be read#
# and plotted using Paraview. #
# 'dumpatomsXX.vtp', 'dumpatomsXX_boundingBox.vtr' ... produces by the #
# dumpvtk routine (requires that lammps be #
# compiled with the vtk package). These filed#
# can also be read and plotted using Paraview.#
# XX is the timestep of the dump output. #
#===========================================================================#
units micro
dimension 3
boundary p p f
atom_style atomic
#----------------------------------------------------------------------------
# Need a neighbor bin size smaller than the lattice-Boltzmann grid spacing
# to ensure that the particles belonging to a given processor remain inside
# that processors lattice-Boltzmann grid.
# The arguments for neigh_modify have been set to "delay 0 every 1", again
# to ensure that the particles belonging to a given processor remain inside
# that processors lattice-Boltzmann grid. However, these values can likely
# be somewhat increased without issue. If a problem does arise (a particle
# is outside of its processors LB grid) an error message is printed and
# the simulation is terminated.
#----------------------------------------------------------------------------
neighbor 1.0 bin
neigh_modify delay 0 every 1
read_data data.one_radius16d2
Reading data file ...
orthogonal box = (-120 -100 -120) to (120 100 120)
1 by 1 by 1 MPI processor grid
reading atoms ...
320 atoms
read_data CPU = 0.010 seconds
#----------------------------------------------------------------------------
# None of the particles interact with one another.
#----------------------------------------------------------------------------
pair_style lj/cut 2.45
pair_coeff * * 0.0 0.0 2.45
neigh_modify exclude type 1 1
mass * 100.0
timestep 2.0
group sphere1 id <> 1 320
320 atoms in group sphere1
#----------------------------------------------------------------------------
# Colloidal particle is initially stationary.
#----------------------------------------------------------------------------
velocity all set 0.0 0.0 0.0 units box
#----------------------------------------------------------------------------
# Create a lattice-Boltzmann fluid covering the simulation domain.
# All of the particles in the simulation apply a force to the fluid.
# (however, this fix does not explicity apply a force back on to these
# particles...this is accomplished through the use of the lb/viscous fix).
# Set the fluid density = 1.0, fluid viscosity = 1.0 (water), and lattice
# spacing dx=4.0.
# dumpxdmf is set to output to the xdmf file (fflow.xdmf and fflow.raw) every
# 2500 steps, indexed by the frame number (rather than timestep).
# The flow is generated via a pressure jump at the otherwise periodic x-
# boundary using the pressurebcx option.
# The initial conditions are set as linear interpolation between boundary
# values using the linearInit option.
#-----------------------------------------------------------------------------
fix 1 all lb/fluid 1 1.0 1.0 dx 4.0 linearInit pressurebcx 0.01 npits 2 20 40 5 0 wp 30 # dumpxdmf 2500 fflow 0
Using a lattice-Boltzmann grid of 60 by 50 by 61 total grid points. (../fix_lb_fluid.cpp:486)
length of pits and end segments larger than system size in x-direction: truncation will occur (../fix_lb_fluid.cpp:505)
Local Grid Geometry created. (../fix_lb_fluid.cpp:1018)
#-----------------------------------------------------------------------------
# You can get some other interesting geometries by replacing the npits options
# at the end of the above lb/fluid fix with one of the following:
#-----------------------------------------------------------------------------
# Channel with 2 pits placed symmetrically about center in x:
#npits 2 20 20 10 5 sw
# Channel with 1 pit placed at center:
#npits 1 20 20 20 sw
# Full channel with 1 "speedbump" placed in right end of the channel:
#npits 2 20 40 5 0 sw
# Channel with 2 "potholes" placed symmetrically about center in x:
#npits 2 20 15 10 10 wp 30
# Channel with T-shaped cross-section with a "speedbump" in right end:
#npits 2 20 40 5 0 wp 30
# Long rectangular channel (all pit, no slit):
#npits 1 20 65 5 0 sw
#----------------------------------------------------------------------------
# Apply the force from the fluid to the particles, and integrate their
# motion, constraining them to move and rotate together as a single rigid
# spherical object.
#----------------------------------------------------------------------------
fix 2 all lb/viscous
fix 3 all rigid group 1 sphere1
1 rigid bodies with 320 atoms
#----------------------------------------------------------------------------
# Create variables for the center-of-mass and angular velocities, and output
# these quantities to the screen.
#----------------------------------------------------------------------------
variable vx equal vcm(all,x)
variable vy equal vcm(all,y)
variable vz equal vcm(all,z)
variable omegax equal omega(all,x)
variable omegay equal omega(all,y)
variable omegaz equal omega(all,z)
thermo_style custom step f_1[2] v_vx v_vy v_vz v_omegax v_omegay v_omegaz
thermo 500
#dump dumpvtk all vtk 2500 dumpatoms*.vtp vx vy vz
run 2500
CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE
Your simulation uses code contributions which should be cited:
- fix lb/fluid command:
@Article{Denniston et al.,
author = {C. Denniston, N. Afrasiabian, M.G. Cole-Andre,F.E. Mackay, S.T.T. Ollila, T. Whitehead},
title = {LAMMPS lb/fluid fix version 2: Improved Hydrodynamic Forces Implemented into LAMMPS through a lattice-Boltzmann fluid}, journal = {Comp.~Phys.~Comm.},
year = 2022,
volume = 275,
pages = {108318}
}
CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE
generated 0 of 0 mixed pair_coeff terms from geometric mixing rule
Neighbor list info ...
update every 1 steps, delay 0 steps, check yes
max neighbors/atom: 2000, page size: 100000
master list distance cutoff = 3.45
ghost atom cutoff = 3.45
binsize = 1.725, bins = 140 116 140
1 neighbor lists, perpetual/occasional/extra = 1 0 0
(1) pair lj/cut, perpetual
attributes: half, newton on
pair build: half/bin/atomonly/newton
stencil: half/bin/3d
bin: standard
Per MPI rank memory allocation (min/avg/max) = 14.01 | 14.01 | 14.01 Mbytes
Step f_1[2] v_vx v_vy v_vz v_omegax v_omegay v_omegaz
0 10054461 0 0 0 0 0 0
500 10055203 0.008268321 2.9442616e-05 0.0019660229 -5.0307394e-07 2.1873981e-05 2.2701522e-07
1000 10055487 0.015301314 4.219514e-05 0.0029217734 -6.9936017e-07 6.8198965e-05 5.2031048e-07
1500 10055663 0.02117119 2.9194379e-05 0.002365636 -7.5401298e-07 0.00011557032 4.0311183e-07
2000 10055781 0.02523262 -9.149834e-06 -0.0001724854 -2.5872732e-07 0.00014864932 3.7644295e-07
2500 10055866 0.02651785 -5.2469712e-05 -0.0030476651 2.9151609e-07 0.00014663544 7.8650891e-07
Loop time of 111.461 on 1 procs for 2500 steps with 320 atoms
Performance: 3875808849.457 ns/day, 0.000 hours/ns, 22.429 timesteps/s
100.0% CPU use with 1 MPI tasks x no OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 0.0072314 | 0.0072314 | 0.0072314 | 0.0 | 0.01
Neigh | 0.26791 | 0.26791 | 0.26791 | 0.0 | 0.24
Comm | 0.0092553 | 0.0092553 | 0.0092553 | 0.0 | 0.01
Output | 0.0054858 | 0.0054858 | 0.0054858 | 0.0 | 0.00
Modify | 111.15 | 111.15 | 111.15 | 0.0 | 99.72
Other | | 0.01779 | | | 0.02
Nlocal: 320 ave 320 max 320 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Nghost: 0 ave 0 max 0 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Neighs: 0 ave 0 max 0 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Total # of neighbors = 0
Ave neighs/atom = 0
Neighbor list builds = 176
Dangerous builds = 0
Total wall time: 0:01:51

View File

@ -0,0 +1,193 @@
LAMMPS (17 Feb 2022)
#===========================================================================#
# Rigid sphere freely moving in a system with pressure driven flow through #
# a pit geometry. #
# #
# If uncommented, the example produces several output files: #
# 'flow.xdmf', 'flow.raw' ... xdmf and accompanying binary file for the #
# fluid density and velocity which can be read#
# and plotted using Paraview. #
# 'dumpatomsXX.vtp', 'dumpatomsXX_boundingBox.vtr' ... produces by the #
# dumpvtk routine (requires that lammps be #
# compiled with the vtk package). These filed#
# can also be read and plotted using Paraview.#
# XX is the timestep of the dump output. #
#===========================================================================#
units micro
dimension 3
boundary p p f
atom_style atomic
#----------------------------------------------------------------------------
# Need a neighbor bin size smaller than the lattice-Boltzmann grid spacing
# to ensure that the particles belonging to a given processor remain inside
# that processors lattice-Boltzmann grid.
# The arguments for neigh_modify have been set to "delay 0 every 1", again
# to ensure that the particles belonging to a given processor remain inside
# that processors lattice-Boltzmann grid. However, these values can likely
# be somewhat increased without issue. If a problem does arise (a particle
# is outside of its processors LB grid) an error message is printed and
# the simulation is terminated.
#----------------------------------------------------------------------------
neighbor 1.0 bin
neigh_modify delay 0 every 1
read_data data.one_radius16d2
Reading data file ...
orthogonal box = (-120 -100 -120) to (120 100 120)
2 by 1 by 2 MPI processor grid
reading atoms ...
320 atoms
read_data CPU = 0.012 seconds
#----------------------------------------------------------------------------
# None of the particles interact with one another.
#----------------------------------------------------------------------------
pair_style lj/cut 2.45
pair_coeff * * 0.0 0.0 2.45
neigh_modify exclude type 1 1
mass * 100.0
timestep 2.0
group sphere1 id <> 1 320
320 atoms in group sphere1
#----------------------------------------------------------------------------
# Colloidal particle is initially stationary.
#----------------------------------------------------------------------------
velocity all set 0.0 0.0 0.0 units box
#----------------------------------------------------------------------------
# Create a lattice-Boltzmann fluid covering the simulation domain.
# All of the particles in the simulation apply a force to the fluid.
# (however, this fix does not explicity apply a force back on to these
# particles...this is accomplished through the use of the lb/viscous fix).
# Set the fluid density = 1.0, fluid viscosity = 1.0 (water), and lattice
# spacing dx=4.0.
# dumpxdmf is set to output to the xdmf file (fflow.xdmf and fflow.raw) every
# 2500 steps, indexed by the frame number (rather than timestep).
# The flow is generated via a pressure jump at the otherwise periodic x-
# boundary using the pressurebcx option.
# The initial conditions are set as linear interpolation between boundary
# values using the linearInit option.
#-----------------------------------------------------------------------------
fix 1 all lb/fluid 1 1.0 1.0 dx 4.0 linearInit pressurebcx 0.01 npits 2 20 40 5 0 wp 30 # dumpxdmf 2500 fflow 0
Using a lattice-Boltzmann grid of 60 by 50 by 61 total grid points. (../fix_lb_fluid.cpp:486)
length of pits and end segments larger than system size in x-direction: truncation will occur (../fix_lb_fluid.cpp:505)
Local Grid Geometry created. (../fix_lb_fluid.cpp:1018)
#-----------------------------------------------------------------------------
# You can get some other interesting geometries by replacing the npits options
# at the end of the above lb/fluid fix with one of the following:
#-----------------------------------------------------------------------------
# Channel with 2 pits placed symmetrically about center in x:
#npits 2 20 20 10 5 sw
# Channel with 1 pit placed at center:
#npits 1 20 20 20 sw
# Full channel with 1 "speedbump" placed in right end of the channel:
#npits 2 20 40 5 0 sw
# Channel with 2 "potholes" placed symmetrically about center in x:
#npits 2 20 15 10 10 wp 30
# Channel with T-shaped cross-section with a "speedbump" in right end:
#npits 2 20 40 5 0 wp 30
# Long rectangular channel (all pit, no slit):
#npits 1 20 65 5 0 sw
#----------------------------------------------------------------------------
# Apply the force from the fluid to the particles, and integrate their
# motion, constraining them to move and rotate together as a single rigid
# spherical object.
#----------------------------------------------------------------------------
fix 2 all lb/viscous
fix 3 all rigid group 1 sphere1
1 rigid bodies with 320 atoms
#----------------------------------------------------------------------------
# Create variables for the center-of-mass and angular velocities, and output
# these quantities to the screen.
#----------------------------------------------------------------------------
variable vx equal vcm(all,x)
variable vy equal vcm(all,y)
variable vz equal vcm(all,z)
variable omegax equal omega(all,x)
variable omegay equal omega(all,y)
variable omegaz equal omega(all,z)
thermo_style custom step f_1[2] v_vx v_vy v_vz v_omegax v_omegay v_omegaz
thermo 500
#dump dumpvtk all vtk 2500 dumpatoms*.vtp vx vy vz
run 2500
CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE
Your simulation uses code contributions which should be cited:
- fix lb/fluid command:
@Article{Denniston et al.,
author = {C. Denniston, N. Afrasiabian, M.G. Cole-Andre,F.E. Mackay, S.T.T. Ollila, T. Whitehead},
title = {LAMMPS lb/fluid fix version 2: Improved Hydrodynamic Forces Implemented into LAMMPS through a lattice-Boltzmann fluid}, journal = {Comp.~Phys.~Comm.},
year = 2022,
volume = 275,
pages = {108318}
}
CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE
generated 0 of 0 mixed pair_coeff terms from geometric mixing rule
Neighbor list info ...
update every 1 steps, delay 0 steps, check yes
max neighbors/atom: 2000, page size: 100000
master list distance cutoff = 3.45
ghost atom cutoff = 3.45
binsize = 1.725, bins = 140 116 140
1 neighbor lists, perpetual/occasional/extra = 1 0 0
(1) pair lj/cut, perpetual
attributes: half, newton on
pair build: half/bin/atomonly/newton
stencil: half/bin/3d
bin: standard
Per MPI rank memory allocation (min/avg/max) = 6.973 | 6.973 | 6.973 Mbytes
Step f_1[2] v_vx v_vy v_vz v_omegax v_omegay v_omegaz
0 10054461 0 0 0 0 0 0
500 10055203 0.008268321 2.9442616e-05 0.0019660229 -5.0307394e-07 2.1873981e-05 2.2701522e-07
1000 10055487 0.015301314 4.219514e-05 0.0029217734 -6.9936017e-07 6.8198965e-05 5.2031048e-07
1500 10055663 0.02117119 2.9194379e-05 0.002365636 -7.5401298e-07 0.00011557032 4.0311183e-07
2000 10055781 0.02523262 -9.149834e-06 -0.0001724854 -2.5872732e-07 0.00014864932 3.7644295e-07
2500 10055866 0.02651785 -5.2469712e-05 -0.0030476651 2.9151609e-07 0.00014663544 7.8650891e-07
Loop time of 86.7379 on 4 procs for 2500 steps with 320 atoms
Performance: 4980523049.256 ns/day, 0.000 hours/ns, 28.822 timesteps/s
99.1% CPU use with 4 MPI tasks x no OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 0.005625 | 0.0081021 | 0.011663 | 2.9 | 0.01
Neigh | 0.25946 | 0.26966 | 0.28604 | 2.0 | 0.31
Comm | 0.032947 | 0.047576 | 0.069872 | 7.0 | 0.05
Output | 0.0038996 | 0.0041104 | 0.0047328 | 0.6 | 0.00
Modify | 86.297 | 86.325 | 86.351 | 0.3 | 99.52
Other | | 0.08361 | | | 0.10
Nlocal: 80 ave 219 max 0 min
Histogram: 2 0 0 0 1 0 0 0 0 1
Nghost: 17.75 ave 36 max 0 min
Histogram: 2 0 0 0 0 0 0 0 0 2
Neighs: 0 ave 0 max 0 min
Histogram: 4 0 0 0 0 0 0 0 0 0
Total # of neighbors = 0
Ave neighs/atom = 0
Neighbor list builds = 176
Dangerous builds = 0
Total wall time: 0:01:26

View File

@ -1,70 +0,0 @@
LAMMPS (29 Sep 2021 - Update 1)
Reading data file ...
orthogonal box = (-120.00000 -100.00000 -120.00000) to (120.00000 100.00000 120.00000)
2 by 1 by 2 MPI processor grid
reading atoms ...
320 atoms
read_data CPU = 0.008 seconds
320 atoms in group sphere1
Using a lattice-Boltzmann grid of 60 by 50 by 61 total grid points. (../fix_lb_fluid.cpp:475)
length of pits and end segments larger than system size in x-direction: truncation will occur (../fix_lb_fluid.cpp:494)
Local Grid Geometry created. (../fix_lb_fluid.cpp:1021)
First Run initialized
1 rigid bodies with 320 atoms
Neighbor list info ...
update every 1 steps, delay 0 steps, check yes
max neighbors/atom: 2000, page size: 100000
master list distance cutoff = 3.45
ghost atom cutoff = 3.45
binsize = 1.725, bins = 140 116 140
1 neighbor lists, perpetual/occasional/extra = 1 0 0
(1) pair lj/cut, perpetual
attributes: half, newton on
pair build: half/bin/atomonly/newton
stencil: half/bin/3d
bin: standard
Setting up Verlet run ...
Unit style : micro
Current step : 0
Time step : 2
Per MPI rank memory allocation (min/avg/max) = 7.225 | 7.225 | 7.225 Mbytes
Step f_1[2] v_vx v_vy v_vz v_omegax v_omegay v_omegaz
0 10054461 0 0 0 0 0 0
500 10055203 0.008268321 2.9442616e-05 0.0019660229 -5.0307394e-07 2.1873981e-05 2.2701522e-07
1000 10055487 0.015301314 4.219514e-05 0.0029217734 -6.9936017e-07 6.8198965e-05 5.2031048e-07
1500 10055663 0.02117119 2.9194379e-05 0.002365636 -7.5401298e-07 0.00011557032 4.0311183e-07
2000 10055781 0.02523262 -9.149834e-06 -0.0001724854 -2.5872732e-07 0.00014864932 3.7644295e-07
2500 10055866 0.02651785 -5.2469712e-05 -0.0030476651 2.9151609e-07 0.00014663544 7.8650891e-07
Loop time of 88.7186 on 4 procs for 2500 steps with 320 atoms
Performance: 4869327934.296 ns/day, 0.000 hours/ns, 28.179 timesteps/s
99.1% CPU use with 4 MPI tasks x no OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 0.0049214 | 0.0074319 | 0.01069 | 2.9 | 0.01
Neigh | 0.25996 | 0.26957 | 0.28281 | 1.9 | 0.30
Comm | 0.034344 | 0.047966 | 0.066438 | 6.3 | 0.05
Output | 0.027428 | 0.039502 | 0.04364 | 3.5 | 0.04
Modify | 88.227 | 88.258 | 88.292 | 0.3 | 99.48
Other | | 0.09591 | | | 0.11
Nlocal: 80.0000 ave 219 max 0 min
Histogram: 2 0 0 0 1 0 0 0 0 1
Nghost: 17.7500 ave 36 max 0 min
Histogram: 2 0 0 0 0 0 0 0 0 2
Neighs: 0.00000 ave 0 max 0 min
Histogram: 4 0 0 0 0 0 0 0 0 0
Total # of neighbors = 0
Ave neighs/atom = 0.0000000
Neighbor list builds = 176
Dangerous builds = 0
LB equilibriumDist time: 16.184525
LB update time: 35.882755
LB PCalc time: 22.914380
LB fluidForce time: 8.049794
LB CorrectU time: 5.031811
Total wall time: 0:01:28

View File

@ -6,8 +6,6 @@
# To run this example, LAMMPS needs to be compiled with a the following #
# packages: RIGID, LATBOLTZ #
# #
# Sample output from this run can be found in the file: #
# 'planewall.out' #
#===========================================================================#
units micro
@ -32,7 +30,7 @@ neighbor 1.0 bin
neigh_modify delay 0 every 1
comm_modify cutoff 10.0
read_data one_radius16d2.data
read_data data.one_radius16d2
#----------------------------------------------------------------------------
# None of the particles interact with one another.

View File

@ -1,15 +1,135 @@
LAMMPS (29 Sep 2021 - Update 1)
LAMMPS (17 Feb 2022)
#===========================================================================#
# Rigid sphere freely moving near a stationary plane wall in a system #
# undergoing shear flow. #
# Every 10 time steps the center of mass velocity and angular velocity of #
# the sphere are printed to the screen. #
# To run this example, LAMMPS needs to be compiled with a the following #
# packages: RIGID, LATBOLTZ #
# #
#===========================================================================#
units micro
dimension 3
boundary p p f
atom_style atomic
#----------------------------------------------------------------------------
# Need a neighbor bin size smaller than the lattice-Boltzmann grid spacing
# to ensure that the particles belonging to a given processor remain inside
# that processors lattice-Boltzmann grid.
# The arguments for neigh_modify have been set to "delay 0 every 1", again
# to ensure that the particles belonging to a given processor remain inside
# that processors lattice-Boltzmann grid. However, these values can likely
# be somewhat increased without issue. If a problem does arise (a particle
# is outside of its processors LB grid) an error message is printed and
# the simulation is terminated.
# The communcation cutoff is set to 2.5 dx to ensure that all particles in the
# processor ghost fluid region (of width 2dx) are known to local processor.
#----------------------------------------------------------------------------
neighbor 1.0 bin
neigh_modify delay 0 every 1
comm_modify cutoff 10.0
read_data data.one_radius16d2
Reading data file ...
orthogonal box = (-120.00000 -120.00000 -120.00000) to (120.00000 120.00000 120.00000)
orthogonal box = (-120 -120 -120) to (120 120 120)
1 by 2 by 2 MPI processor grid
reading atoms ...
320 atoms
read_data CPU = 0.008 seconds
read_data CPU = 0.015 seconds
#----------------------------------------------------------------------------
# None of the particles interact with one another.
#----------------------------------------------------------------------------
pair_style lj/cut 2.45
pair_coeff * * 0.0 0.0 2.45
neigh_modify exclude type 1 1
mass * 1.0
timestep 4.0
group sphere1 id <> 1 320
320 atoms in group sphere1
Using a lattice-Boltzmann grid of 60 by 60 by 61 total grid points. (../fix_lb_fluid.cpp:475)
Local Grid Geometry created. (../fix_lb_fluid.cpp:1021)
First Run initialized
#----------------------------------------------------------------------------
# Colloidal particle is initially stationary.
#----------------------------------------------------------------------------
velocity all set 0.0 0.0 0.0 units box
#----------------------------------------------------------------------------
# Create a lattice-Boltzmann fluid covering the simulation domain.
# All of the particles in the simulation apply a force to the fluid.
# (however, this fix does not explicitly apply a force back on to these
# particles...this is accomplished through the use of the lb/viscous fix.
# Use a fluid density = 1.0, fluid viscosity = 1.0 (water), and a lattice
# spacing dx=4.0.
# Use the trilinear interpolation stencil (default) to distribute the force
# from a given particle onto the fluid mesh.
# Create shear in the system, by giving the upper z-wall a velocity of 0.0001
# along the y-direction, while keeping the lower z-wall stationary.
#-----------------------------------------------------------------------------
fix 1 all lb/fluid 1 1.0 1.0 dx 4.0 zwall_velocity 0.0 0.0001
Using a lattice-Boltzmann grid of 60 by 60 by 61 total grid points. (../fix_lb_fluid.cpp:486)
Local Grid Geometry created. (../fix_lb_fluid.cpp:1018)
#----------------------------------------------------------------------------
# Apply the force due to the fluid onto the particles.
#----------------------------------------------------------------------------
fix 2 all lb/viscous
#----------------------------------------------------------------------------
# Integrate the motion of the particles, constraining them to move and
# rotate together as a single rigid spherical object. Use the first
# version to allow the sphere to freely rotate and move with the fluid
# and the 2nd version to measure the force and torque on a fixed sphere
# in the shear flow which will allow you to measure the Stokes drag and
# torque on the sphere.
#----------------------------------------------------------------------------
fix 3 all rigid group 1 sphere1
1 rigid bodies with 320 atoms
#fix 3 all rigid group 1 sphere1 force * off off off torque * off off off
#----------------------------------------------------------------------------
# Create variables for the center-of-mass velocities, angular velocities, and
# force and torque on the CM. Then output these quantities to the screen.
#----------------------------------------------------------------------------
variable vx equal vcm(all,x)
variable vy equal vcm(all,y)
variable vz equal vcm(all,z)
variable omegax equal omega(all,x)
variable omegay equal omega(all,y)
variable omegaz equal omega(all,z)
variable fx equal fcm(all,x)
variable fy equal fcm(all,y)
variable fz equal fcm(all,z)
variable tx equal torque(all,x)
variable ty equal torque(all,y)
variable tz equal torque(all,z)
thermo_style custom v_vx v_vy v_vz v_omegax v_omegay v_omegaz v_fx v_fy v_fz v_tx v_ty v_tz
thermo 100
run 7500
CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE
Your simulation uses code contributions which should be cited:
- fix lb/fluid command:
@Article{Denniston et al.,
author = {C. Denniston, N. Afrasiabian, M.G. Cole-Andre,F.E. Mackay, S.T.T. Ollila, T. Whitehead},
title = {LAMMPS lb/fluid fix version 2: Improved Hydrodynamic Forces Implemented into LAMMPS through a lattice-Boltzmann fluid}, journal = {Comp.~Phys.~Comm.},
year = 2022,
volume = 275,
pages = {108318}
}
CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE
generated 0 of 0 mixed pair_coeff terms from geometric mixing rule
Neighbor list info ...
update every 1 steps, delay 0 steps, check yes
max neighbors/atom: 2000, page size: 100000
@ -22,10 +142,6 @@ Neighbor list info ...
pair build: half/bin/atomonly/newton
stencil: half/bin/3d
bin: standard
Setting up Verlet run ...
Unit style : micro
Current step : 0
Time step : 4
Per MPI rank memory allocation (min/avg/max) = 8.426 | 8.426 | 8.426 Mbytes
v_vx v_vy v_vz v_omegax v_omegay v_omegaz v_fx v_fy v_fz v_tx v_ty v_tz
0 0 0 0 0 0 0 0 0 0 0 0
@ -104,36 +220,30 @@ v_vx v_vy v_vz v_omegax v_omegay v_omegaz v_fx v_fy v_fz v_tx v_ty v_tz
-2.6074079e-12 4.9575038e-05 -8.5484831e-10 -2.0807608e-07 -7.0458889e-12 1.5917995e-11 -4.6370161e-13 2.3298683e-08 -1.1706817e-11 2.5798545e-10 6.4493257e-12 -9.0570787e-12
-3.1912867e-12 4.9603187e-05 -8.7103016e-10 -2.0807419e-07 -6.9729658e-12 1.5869196e-11 -5.4662034e-13 2.1756065e-08 -1.4183469e-11 2.6950321e-10 1.2401403e-11 -9.1121813e-12
-2.6896504e-12 4.9629471e-05 -8.8354072e-10 -2.0807269e-07 -6.9518789e-12 1.5862597e-11 7.7697632e-13 2.0315473e-08 -9.1356461e-12 1.9455164e-10 -5.2929772e-13 -4.0871645e-12
Loop time of 354.087 on 4 procs for 7500 steps with 320 atoms
Loop time of 348.592 on 4 procs for 7500 steps with 320 atoms
Performance: 7320228141.222 ns/day, 0.000 hours/ns, 21.181 timesteps/s
Performance: 7435633235.428 ns/day, 0.000 hours/ns, 21.515 timesteps/s
99.9% CPU use with 4 MPI tasks x no OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 0.02245 | 0.024017 | 0.025793 | 0.9 | 0.01
Neigh | 0.0043829 | 0.0046506 | 0.0049014 | 0.4 | 0.00
Comm | 0.16337 | 0.1673 | 0.17244 | 0.9 | 0.05
Output | 0.011278 | 0.016279 | 0.031255 | 6.8 | 0.00
Modify | 353.57 | 353.58 | 353.6 | 0.1 | 99.86
Other | | 0.2924 | | | 0.08
Pair | 0.024506 | 0.025477 | 0.026424 | 0.6 | 0.01
Neigh | 0.030494 | 0.03257 | 0.034614 | 1.0 | 0.01
Comm | 0.2132 | 0.21532 | 0.22048 | 0.6 | 0.06
Output | 0.011234 | 0.016341 | 0.031613 | 6.9 | 0.00
Modify | 347.96 | 347.98 | 348 | 0.1 | 99.83
Other | | 0.3181 | | | 0.09
Nlocal: 80.0000 ave 86 max 74 min
Nlocal: 80 ave 86 max 74 min
Histogram: 1 1 0 0 0 0 0 0 1 1
Nghost: 122.750 ave 126 max 120 min
Nghost: 122.75 ave 126 max 120 min
Histogram: 1 0 0 1 0 1 0 0 0 1
Neighs: 0.00000 ave 0 max 0 min
Neighs: 0 ave 0 max 0 min
Histogram: 4 0 0 0 0 0 0 0 0 0
Total # of neighbors = 0
Ave neighs/atom = 0.0000000
Ave neighs/atom = 0
Neighbor list builds = 2
Dangerous builds = 0
LB equilibriumDist time: 74.234376
LB update time: 137.610462
LB PCalc time: 90.368082
LB fluidForce time: 30.518506
LB CorrectU time: 20.319747
Total wall time: 0:05:54
Total wall time: 0:05:48

View File

@ -1,139 +0,0 @@
LAMMPS (29 Sep 2021 - Update 1)
Reading data file ...
orthogonal box = (-120.00000 -120.00000 -120.00000) to (120.00000 120.00000 120.00000)
1 by 2 by 2 MPI processor grid
reading atoms ...
320 atoms
read_data CPU = 0.010 seconds
320 atoms in group sphere1
Using a lattice-Boltzmann grid of 60 by 60 by 61 total grid points. (../fix_lb_fluid.cpp:475)
Local Grid Geometry created. (../fix_lb_fluid.cpp:1021)
First Run initialized
1 rigid bodies with 320 atoms
Neighbor list info ...
update every 1 steps, delay 0 steps, check yes
max neighbors/atom: 2000, page size: 100000
master list distance cutoff = 3.45
ghost atom cutoff = 10
binsize = 1.725, bins = 140 140 140
1 neighbor lists, perpetual/occasional/extra = 1 0 0
(1) pair lj/cut, perpetual
attributes: half, newton on
pair build: half/bin/atomonly/newton
stencil: half/bin/3d
bin: standard
Setting up Verlet run ...
Unit style : micro
Current step : 0
Time step : 4
Per MPI rank memory allocation (min/avg/max) = 8.426 | 8.426 | 8.426 Mbytes
v_vx v_vy v_vz v_omegax v_omegay v_omegaz v_fx v_fy v_fz v_tx v_ty v_tz
0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 4.239889e-13 8.8817291e-07 -2.8255287e-11 -8.3760967e-06 -3.4292821e-11 1.4413627e-09
0 0 0 0 0 0 1.4315002e-10 4.8664591e-05 -3.7829664e-10 -0.00030396599 -1.5178649e-09 5.8286332e-08
0 0 0 0 0 0 7.4346125e-10 0.00021263259 1.4837899e-09 -0.00099915016 -5.4814944e-09 2.0970524e-07
0 0 0 0 0 0 1.6937683e-09 0.00046298302 6.9867552e-09 -0.0017633394 -1.0234552e-08 3.9564168e-07
0 0 0 0 0 0 2.7893371e-09 0.00075233887 1.512364e-08 -0.002430003 -1.4664452e-08 5.7543419e-07
0 0 0 0 0 0 3.9059765e-09 0.0010508836 2.473915e-08 -0.0029656977 -1.843702e-08 7.3546258e-07
0 0 0 0 0 0 4.9837024e-09 0.0013431931 3.5023862e-08 -0.0033824332 -2.154284e-08 8.7378862e-07
0 0 0 0 0 0 5.9972036e-09 0.0016220459 4.5458108e-08 -0.0037022957 -2.4071195e-08 9.9238011e-07
0 0 0 0 0 0 6.9382202e-09 0.0018845001 5.571997e-08 -0.0039464067 -2.6127149e-08 1.0941409e-06
0 0 0 0 0 0 7.8064955e-09 0.0021297688 6.5611103e-08 -0.0041322536 -2.7805365e-08 1.1818894e-06
0 0 0 0 0 0 8.6053202e-09 0.0023581155 7.5022305e-08 -0.0042735978 -2.9184146e-08 1.2580602e-06
0 0 0 0 0 0 9.3393725e-09 0.0025702889 8.3893991e-08 -0.0043810513 -3.0326009e-08 1.3246619e-06
0 0 0 0 0 0 1.001368e-08 0.0027672363 9.2208859e-08 -0.0044627274 -3.128007e-08 1.3833192e-06
0 0 0 0 0 0 1.0633157e-08 0.0029499614 9.9966263e-08 -0.0045248072 -3.2084685e-08 1.4353358e-06
0 0 0 0 0 0 1.1202408e-08 0.003119455 1.0718596e-07 -0.0045719925 -3.2769709e-08 1.4817567e-06
0 0 0 0 0 0 1.1725673e-08 0.0032766636 1.1388989e-07 -0.0046078577 -3.335838e-08 1.5234208e-06
0 0 0 0 0 0 1.2206811e-08 0.0034224769 1.2010982e-07 -0.0046351195 -3.3868829e-08 1.5610047e-06
0 0 0 0 0 0 1.2649333e-08 0.0035577241 1.2587419e-07 -0.0046558425 -3.4315213e-08 1.5950578e-06
0 0 0 0 0 0 1.3056425e-08 0.0036831753 1.31216e-07 -0.0046715955 -3.4708664e-08 1.6260295e-06
0 0 0 0 0 0 1.3430996e-08 0.0037995442 1.3616361e-07 -0.0046835712 -3.505795e-08 1.6542904e-06
0 0 0 0 0 0 1.3775686e-08 0.0039074918 1.407471e-07 -0.0046926757 -3.5370035e-08 1.6801491e-06
0 0 0 0 0 0 1.4092912e-08 0.0040076304 1.4499244e-07 -0.0046995979 -3.5650478e-08 1.7038651e-06
0 0 0 0 0 0 1.4384883e-08 0.0041005268 1.4892558e-07 -0.0047048612 -3.5903729e-08 1.7256585e-06
0 0 0 0 0 0 1.4653619e-08 0.0041867065 1.5256951e-07 -0.0047088634 -3.6133445e-08 1.745718e-06
0 0 0 0 0 0 1.490098e-08 0.0042666563 1.5594609e-07 -0.0047119071 -3.6342564e-08 1.7642066e-06
0 0 0 0 0 0 1.5128662e-08 0.0043408273 1.5907544e-07 -0.0047142221 -3.6533538e-08 1.7812667e-06
0 0 0 0 0 0 1.5338233e-08 0.0044096378 1.6197577e-07 -0.0047159831 -3.670842e-08 1.7970233e-06
0 0 0 0 0 0 1.5531126e-08 0.0044734757 1.646646e-07 -0.0047173229 -3.6868911e-08 1.8115874e-06
0 0 0 0 0 0 1.5708666e-08 0.0045327006 1.6715708e-07 -0.0047183425 -3.7016486e-08 1.8250577e-06
0 0 0 0 0 0 1.5872071e-08 0.0045876461 1.6946841e-07 -0.0047191186 -3.7152397e-08 1.8375231e-06
0 0 0 0 0 0 1.6022457e-08 0.0046386215 1.7161128e-07 -0.0047197095 -3.7277723e-08 1.8490635e-06
0 0 0 0 0 0 1.6160856e-08 0.0046859138 1.7359882e-07 -0.0047201596 -3.7393419e-08 1.8597512e-06
0 0 0 0 0 0 1.6288218e-08 0.0047297892 1.7544172e-07 -0.0047205027 -3.7500311e-08 1.8696524e-06
0 0 0 0 0 0 1.6405415e-08 0.0047704946 1.7715127e-07 -0.0047207642 -3.7599158e-08 1.8788269e-06
0 0 0 0 0 0 1.6513252e-08 0.0048082591 1.7873657e-07 -0.0047209638 -3.7690613e-08 1.8873299e-06
0 0 0 0 0 0 1.6612471e-08 0.0048432952 1.802073e-07 -0.0047211162 -3.7775283e-08 1.8952118e-06
0 0 0 0 0 0 1.6703756e-08 0.0048758 1.8157127e-07 -0.0047212327 -3.7853677e-08 1.9025188e-06
0 0 0 0 0 0 1.6787736e-08 0.0049059565 1.8283671e-07 -0.0047213218 -3.7926309e-08 1.9092938e-06
0 0 0 0 0 0 1.6864987e-08 0.0049339342 1.8401041e-07 -0.0047213902 -3.7993601e-08 1.9155759e-06
0 0 0 0 0 0 1.6936047e-08 0.0049598906 1.8509932e-07 -0.0047214426 -3.8055984e-08 1.9214015e-06
0 0 0 0 0 0 1.7001408e-08 0.0049839718 1.8610939e-07 -0.004721483 -3.8113818e-08 1.926804e-06
0 0 0 0 0 0 1.706152e-08 0.0050063132 1.8704646e-07 -0.0047215141 -3.8167432e-08 1.9318145e-06
0 0 0 0 0 0 1.7116801e-08 0.0050270405 1.8791576e-07 -0.0047215382 -3.8217147e-08 1.9364615e-06
0 0 0 0 0 0 1.7167636e-08 0.0050462704 1.8872221e-07 -0.0047215569 -3.8263258e-08 1.9407716e-06
0 0 0 0 0 0 1.7214381e-08 0.005064111 1.8947039e-07 -0.0047215715 -3.8306026e-08 1.9447693e-06
0 0 0 0 0 0 1.7257357e-08 0.0050806626 1.9016445e-07 -0.0047215829 -3.8345683e-08 1.9484773e-06
0 0 0 0 0 0 1.7296867e-08 0.0050960185 1.9080841e-07 -0.0047215918 -3.8382478e-08 1.9519167e-06
0 0 0 0 0 0 1.7333189e-08 0.005110265 1.9140576e-07 -0.0047215989 -3.8416608e-08 1.955107e-06
0 0 0 0 0 0 1.7366574e-08 0.0051234822 1.9196003e-07 -0.0047216046 -3.8448262e-08 1.9580663e-06
0 0 0 0 0 0 1.7397262e-08 0.0051357445 1.9247416e-07 -0.0047216092 -3.8477636e-08 1.9608112e-06
0 0 0 0 0 0 1.7425463e-08 0.005147121 1.9295122e-07 -0.0047216128 -3.8504879e-08 1.9633575e-06
0 0 0 0 0 0 1.745138e-08 0.0051576755 1.9339373e-07 -0.0047216159 -3.8530161e-08 1.9657193e-06
0 0 0 0 0 0 1.7475194e-08 0.0051674675 1.9380435e-07 -0.0047216184 -3.8553607e-08 1.9679102e-06
0 0 0 0 0 0 1.7497073e-08 0.0051765521 1.9418523e-07 -0.0047216204 -3.8575366e-08 1.9699425e-06
0 0 0 0 0 0 1.7517174e-08 0.0051849803 1.9453865e-07 -0.0047216222 -3.8595551e-08 1.9718277e-06
0 0 0 0 0 0 1.753564e-08 0.0051927997 1.9486648e-07 -0.0047216237 -3.8614279e-08 1.9735764e-06
0 0 0 0 0 0 1.7552601e-08 0.0052000541 1.9517068e-07 -0.0047216249 -3.8631647e-08 1.9751986e-06
0 0 0 0 0 0 1.7568178e-08 0.0052067844 1.9545286e-07 -0.004721626 -3.864777e-08 1.9767033e-06
0 0 0 0 0 0 1.7582482e-08 0.0052130285 1.9571468e-07 -0.004721627 -3.8662724e-08 1.9780991e-06
0 0 0 0 0 0 1.7595618e-08 0.0052188215 1.9595756e-07 -0.0047216278 -3.8676592e-08 1.9793939e-06
0 0 0 0 0 0 1.7607679e-08 0.005224196 1.9618291e-07 -0.0047216286 -3.8689479e-08 1.980595e-06
0 0 0 0 0 0 1.761875e-08 0.0052291822 1.9639198e-07 -0.0047216293 -3.8701417e-08 1.9817091e-06
0 0 0 0 0 0 1.7628913e-08 0.0052338081 1.9658594e-07 -0.0047216299 -3.87125e-08 1.9827426e-06
0 0 0 0 0 0 1.7638241e-08 0.0052380998 1.9676589e-07 -0.0047216304 -3.8722782e-08 1.9837013e-06
0 0 0 0 0 0 1.7646803e-08 0.0052420815 1.9693283e-07 -0.0047216309 -3.8732329e-08 1.9845906e-06
0 0 0 0 0 0 1.7654657e-08 0.0052457755 1.9708773e-07 -0.0047216313 -3.8741169e-08 1.9854156e-06
0 0 0 0 0 0 1.7661865e-08 0.0052492027 1.9723142e-07 -0.0047216317 -3.8749387e-08 1.9861808e-06
0 0 0 0 0 0 1.7668477e-08 0.0052523822 1.9736474e-07 -0.0047216321 -3.8756997e-08 1.9868906e-06
0 0 0 0 0 0 1.7674543e-08 0.0052553321 1.9748842e-07 -0.0047216325 -3.8764064e-08 1.9875491e-06
0 0 0 0 0 0 1.7680105e-08 0.0052580688 1.9760317e-07 -0.0047216328 -3.8770626e-08 1.9881599e-06
0 0 0 0 0 0 1.7685205e-08 0.0052606078 1.9770962e-07 -0.0047216331 -3.877671e-08 1.9887264e-06
0 0 0 0 0 0 1.7689882e-08 0.0052629634 1.978084e-07 -0.0047216333 -3.8782352e-08 1.989252e-06
0 0 0 0 0 0 1.769417e-08 0.0052651488 1.9790002e-07 -0.0047216336 -3.8787592e-08 1.9897395e-06
0 0 0 0 0 0 1.7698101e-08 0.0052671763 1.9798504e-07 -0.0047216338 -3.8792458e-08 1.9901918e-06
0 0 0 0 0 0 1.7701702e-08 0.0052690573 1.9806391e-07 -0.004721634 -3.8796971e-08 1.9906113e-06
Loop time of 348.316 on 4 procs for 7500 steps with 320 atoms
Performance: 7441508527.485 ns/day, 0.000 hours/ns, 21.532 timesteps/s
100.0% CPU use with 4 MPI tasks x no OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 0.022385 | 0.02409 | 0.026109 | 0.9 | 0.01
Neigh | 0 | 0 | 0 | 0.0 | 0.00
Comm | 0.14613 | 0.14777 | 0.14918 | 0.3 | 0.04
Output | 0.010513 | 0.015329 | 0.02974 | 6.7 | 0.00
Modify | 347.82 | 347.85 | 347.86 | 0.1 | 99.87
Other | | 0.2818 | | | 0.08
Nlocal: 80.0000 ave 82 max 78 min
Histogram: 2 0 0 0 0 0 0 0 0 2
Nghost: 122.500 ave 124 max 121 min
Histogram: 2 0 0 0 0 0 0 0 0 2
Neighs: 0.00000 ave 0 max 0 min
Histogram: 4 0 0 0 0 0 0 0 0 0
Total # of neighbors = 0
Ave neighs/atom = 0.0000000
Neighbor list builds = 0
Dangerous builds = 0
LB equilibriumDist time: 72.754071
LB update time: 135.699228
LB PCalc time: 88.586456
LB fluidForce time: 30.088636
LB CorrectU time: 20.191920
Total wall time: 0:05:48

View File

@ -7,7 +7,7 @@
# To run this example, LAMMPS needs to be compiled with a the following #
# packages: MOLECULE, RIGID, LATBOTLZ #
# #
# Sample output from this run can be found in the file: #
# If uncommented, sample output from this run can be found in the file: #
# 'dump.polymer.lammpstrj' #
# and viewed using, e.g., the VMD software. #
# #
@ -18,7 +18,7 @@ dimension 3
boundary p p f
atom_style hybrid molecular
special_bonds fene
read_data polymer.data
read_data data.polymer
#----------------------------------------------------------------------------
# Need a neighbor bin size smaller than the lattice-Boltzmann grid spacing
@ -105,7 +105,7 @@ fix 3 all rigid/small molecule
fix 4 all lb/momentum 100000 linear 1 1 1
dump 1 ForceAtoms custom 10 trapped_polymer.lammpstrj id x y z vx vy vz
#dump 1 ForceAtoms custom 10 trapped_polymer.lammpstrj id x y z vx vy vz
#run 2000001
run 10000

View File

@ -0,0 +1,199 @@
LAMMPS (17 Feb 2022)
#===========================================================================#
# polymer test #
# #
# Run consists of a lone 32-bead coarse-grained polymer #
# undergoing Brownian motion in thermal lattice-Boltzmann fluid. #
# #
# To run this example, LAMMPS needs to be compiled with a the following #
# packages: MOLECULE, RIGID, LATBOTLZ #
# #
# If uncommented, sample output from this run can be found in the file: #
# 'dump.polymer.lammpstrj' #
# and viewed using, e.g., the VMD software. #
# #
#===========================================================================#
units nano
dimension 3
boundary p p f
atom_style hybrid molecular
special_bonds fene
read_data data.polymer
Reading data file ...
orthogonal box = (0 0 0) to (40 40 40)
1 by 2 by 2 MPI processor grid
reading atoms ...
992 atoms
scanning bonds ...
1 = max bonds/atom
reading bonds ...
31 bonds
Finding 1-2 1-3 1-4 neighbors ...
special bond factors lj: 0 1 1
special bond factors coul: 0 1 1
2 = max # of 1-2 neighbors
2 = max # of special neighbors
special bonds CPU = 0.000 seconds
read_data CPU = 0.037 seconds
#----------------------------------------------------------------------------
# Need a neighbor bin size smaller than the lattice-Boltzmann grid spacing
# to ensure that the particles belonging to a given processor remain inside
# that processors lattice-Boltzmann grid.
# The communcation cutoff is set to 2.5 dx to ensure that all particles in the
# processor ghost fluid region (of width 2dx) are known to local processor.
#----------------------------------------------------------------------------
neighbor 0.5 bin
neigh_modify delay 0 every 1 check yes
neigh_modify exclude type 2 2
neigh_modify exclude type 2 1
comm_modify cutoff 2.5
#----------------------------------------------------------------------------
# Implement a hard-sphere interaction between the particles at the center of
# each monomer (use a truncated and shifted Lennard-Jones potential).
#----------------------------------------------------------------------------
bond_style fene
bond_coeff 1 60.0 2.25 4.14195 1.5
pair_style lj/cut 1.68369
pair_coeff 1 1 4.14195 1.5 1.68369
pair_coeff 1 2 4.14195 1.5 1.68369
pair_coeff 2 2 0 1.0
# The mass is set 4/3 PI r^3 fluid_density/31 , where r=0.617, 31 is number of
# nodes in a single monomer
mass * 0.00000318
timestep 0.0001
#----------------------------------------------------------------------------
# ForceAtoms are the particles at the center of each monomer which
# do not interact with the fluid, but are used to implement the hard-sphere
# interactions.
# FluidAtoms are the particles representing the surface of the monomer
# which do interact with the fluid.
#----------------------------------------------------------------------------
group ForceAtoms type 1
32 atoms in group ForceAtoms
group FluidAtoms type 2
960 atoms in group FluidAtoms
#----------------------------------------------------------------------------
# Placement of a trap (similar to an 1D optical trap) for the polymer
# Note that the addforce fix needs to go before the lb/fluid and lb/viscous
# fix as these fixes rescale the forces to account for the added mass of the
# fluid that gets dragged around with the particle so need prior knowledge of
# all forces applied to the particles involved in these fixes before they are
# called.
#----------------------------------------------------------------------------
variable fx atom -(x-20.0)*20.0/31.0
fix trap all addforce v_fx 0.0 0.0 # call before fix lb/fluid and lb/viscous
#---------------------------------------------------------------------------
# Create a lattice-Boltzmann fluid covering the simulation domain.
# This fluid feels a force due to the particles specified through FluidAtoms
# (however, this fix does not explicity apply a force back on to these
# particles. This is accomplished through the use of the lb/viscous fix).
# We set fluid viscosity = 0.1 and fluid density = 0.00009982071 which
# means the kinematic viscosity is idential to that of water but the
# dynamic viscosity is a factor of 10 less than that of water which
# increases the diffusive dynamics by a corresponding factor of 10.
# lattice spacing dx=1.0.
# Use a thermal lattice-Boltzmann fluid (temperature 300K, random number
# seed=15003). This enables the particles to undergo Brownian motion in
# the fluid.
#----------------------------------------------------------------------------
fix 1 all lb/fluid 1 0.1 0.00009982071 dx 1.0 noise 300.0 15003
Using a lattice-Boltzmann grid of 40 by 40 by 41 total grid points. (../fix_lb_fluid.cpp:486)
Local Grid Geometry created. (../fix_lb_fluid.cpp:1018)
#----------------------------------------------------------------------------
# Apply the force from the fluid to the particles, and integrate their
# motion, constraining each monomerto move and rotate as a single rigid
# spherical object.
# Since both the ForceAtoms (central atoms), and the FluidAtoms (spherical
# shell) should move and rotate together, this fix is applied to all of
# the atoms in the system.
#----------------------------------------------------------------------------
fix 2 all lb/viscous
fix 3 all rigid/small molecule
create bodies CPU = 0.000 seconds
32 rigid bodies with 992 atoms
0.70010803 = max distance from body owner to body atom
#----------------------------------------------------------------------------
# To ensure that numerical errors do not lead to a buildup of momentum in the
# system, the momentum_lb fix is used every 100000 timesteps to zero out the
# total (particle plus fluid) momentum in the system.
#----------------------------------------------------------------------------
fix 4 all lb/momentum 100000 linear 1 1 1
#dump 1 ForceAtoms custom 10 trapped_polymer.lammpstrj id x y z vx vy vz
#run 2000001
run 10000
CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE
Your simulation uses code contributions which should be cited:
- fix lb/fluid command:
@Article{Denniston et al.,
author = {C. Denniston, N. Afrasiabian, M.G. Cole-Andre,F.E. Mackay, S.T.T. Ollila, T. Whitehead},
title = {LAMMPS lb/fluid fix version 2: Improved Hydrodynamic Forces Implemented into LAMMPS through a lattice-Boltzmann fluid}, journal = {Comp.~Phys.~Comm.},
year = 2022,
volume = 275,
pages = {108318}
}
CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE
generated 0 of 1 mixed pair_coeff terms from geometric mixing rule
Neighbor list info ...
update every 1 steps, delay 0 steps, check yes
max neighbors/atom: 2000, page size: 100000
master list distance cutoff = 2.18369
ghost atom cutoff = 2.5
binsize = 1.091845, bins = 37 37 37
1 neighbor lists, perpetual/occasional/extra = 1 0 0
(1) pair lj/cut, perpetual
attributes: half, newton on
pair build: half/bin/newton
stencil: half/bin/3d
bin: standard
WARNING: Communication cutoff 2.5 is shorter than a bond length based estimate of 2.6825. This may lead to errors. (../comm.cpp:723)
Per MPI rank memory allocation (min/avg/max) = 7.861 | 9.842 | 11.95 Mbytes
Step Temp E_pair E_mol TotEng Press
0 0 -8.2758489 2790.7741 2782.4982 0.85835765
10000 15.559756 -10.240592 2817.6714 2827.7319 -0.0015697449
Loop time of 269.705 on 4 procs for 10000 steps with 992 atoms
Performance: 320.351 ns/day, 0.075 hours/ns, 37.078 timesteps/s
99.9% CPU use with 4 MPI tasks x no OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 0.01457 | 0.047368 | 0.1221 | 20.3 | 0.02
Bond | 0.010081 | 0.022047 | 0.043793 | 9.3 | 0.01
Neigh | 0.61943 | 0.62713 | 0.63223 | 0.7 | 0.23
Comm | 0.10937 | 0.33658 | 0.61517 | 39.3 | 0.12
Output | 3.44e-05 | 7.7575e-05 | 0.0001653 | 0.0 | 0.00
Modify | 268.04 | 268.34 | 268.53 | 1.2 | 99.49
Other | | 0.3359 | | | 0.12
Nlocal: 248 ave 802 max 0 min
Histogram: 2 0 1 0 0 0 0 0 0 1
Nghost: 113.25 ave 190 max 42 min
Histogram: 2 0 0 0 0 0 0 0 0 2
Neighs: 4.25 ave 15 max 0 min
Histogram: 2 1 0 0 0 0 0 0 0 1
Total # of neighbors = 17
Ave neighs/atom = 0.017137097
Ave special neighs/atom = 0.0625
Neighbor list builds = 495
Dangerous builds = 0
Total wall time: 0:04:29

File diff suppressed because it is too large Load Diff

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@ -1,81 +0,0 @@
LAMMPS (29 Sep 2021 - Update 1)
Reading data file ...
orthogonal box = (0.0000000 0.0000000 0.0000000) to (40.000000 40.000000 40.000000)
1 by 2 by 2 MPI processor grid
reading atoms ...
992 atoms
scanning bonds ...
1 = max bonds/atom
reading bonds ...
31 bonds
Finding 1-2 1-3 1-4 neighbors ...
special bond factors lj: 0 1 1
special bond factors coul: 0 1 1
2 = max # of 1-2 neighbors
2 = max # of special neighbors
special bonds CPU = 0.000 seconds
read_data CPU = 0.027 seconds
32 atoms in group ForceAtoms
960 atoms in group FluidAtoms
Using a lattice-Boltzmann grid of 40 by 40 by 41 total grid points. (../fix_lb_fluid.cpp:475)
Local Grid Geometry created. (../fix_lb_fluid.cpp:1021)
First Run initialized
create bodies CPU = 0.000 seconds
32 rigid bodies with 992 atoms
0.70010803 = max distance from body owner to body atom
Neighbor list info ...
update every 1 steps, delay 0 steps, check yes
max neighbors/atom: 2000, page size: 100000
master list distance cutoff = 2.18369
ghost atom cutoff = 2.5
binsize = 1.091845, bins = 37 37 37
1 neighbor lists, perpetual/occasional/extra = 1 0 0
(1) pair lj/cut, perpetual
attributes: half, newton on
pair build: half/bin/newton
stencil: half/bin/3d
bin: standard
Setting up Verlet run ...
Unit style : nano
Current step : 0
Time step : 0.0001
WARNING: Communication cutoff 2.5 is shorter than a bond length based estimate of 2.6825. This may lead to errors. (../comm.cpp:730)
Per MPI rank memory allocation (min/avg/max) = 8.114 | 10.07 | 12.65 Mbytes
Step Temp E_pair E_mol TotEng Press
0 0 -8.2758489 2790.7741 2782.4982 0.85835765
10000 15.559756 -10.240592 2817.6714 2827.7319 -0.0015697449
Loop time of 217.363 on 4 procs for 10000 steps with 992 atoms
Performance: 397.491 ns/day, 0.060 hours/ns, 46.006 timesteps/s
99.8% CPU use with 4 MPI tasks x no OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 0.013036 | 0.048243 | 0.13073 | 22.1 | 0.02
Bond | 0.0098736 | 0.02098 | 0.040036 | 8.4 | 0.01
Neigh | 0.4698 | 0.4764 | 0.48073 | 0.7 | 0.22
Comm | 0.085369 | 0.27273 | 0.51085 | 36.0 | 0.13
Output | 0.13148 | 0.36286 | 1.0297 | 63.9 | 0.17
Modify | 215.41 | 215.91 | 216.3 | 2.2 | 99.33
Other | | 0.2725 | | | 0.13
Nlocal: 248.000 ave 802 max 0 min
Histogram: 2 0 1 0 0 0 0 0 0 1
Nghost: 113.250 ave 190 max 42 min
Histogram: 2 0 0 0 0 0 0 0 0 2
Neighs: 4.25000 ave 15 max 0 min
Histogram: 2 1 0 0 0 0 0 0 0 1
Total # of neighbors = 17
Ave neighs/atom = 0.017137097
Ave special neighs/atom = 0.062500000
Neighbor list builds = 495
Dangerous builds = 0
LB equilibriumDist time: 94.576600
LB update time: 66.882962
LB PCalc time: 33.159861
LB fluidForce time: 11.576858
LB CorrectU time: 8.640308
Total wall time: 0:03:37

View File

@ -1,3 +1,12 @@
#===========================================================================#
# Toy car driving down a system with a floor and ceiling. #
# #
# The car is first constructed by condensing particles onto various regions#
# that make up the car's parts. Then the car moves in a lattice Boltzmann #
# fluid. This requires compilation with the RIGID and LATBOLTZ packages #
# You will need to uncomment the dump options to get useful output. #
#===========================================================================#
units cgs
dimension 3
boundary p p f
@ -375,7 +384,7 @@ neigh_modify delay 0 every 1 check yes
#variable commcutoff equal "v_dx*2"
#comm_modify cutoff ${commcutoff}
dump mydump all atom 10000 out.lammpstrj
#dump mydump all atom 10000 out.lammpstrj
thermo 5000
#------------------------------------------------------------------------#
@ -390,7 +399,7 @@ fix 3 all langevin 31000000.0 50000.0 100.0 5678
fix 2 all nve
restart 100000 ParticleRestart
#restart 100000 ParticleRestart
run 100000
@ -466,13 +475,13 @@ velocity all set 0.0 -7.5.0 0.0 units box
# viscosity of air is 0.0001847
fix FL all lb/fluid 1 0.0002 ${density} stencil 2 dx ${dx} zwall_velocity 0 0 dumpxdmf 1000 sflow 0
fix FL all lb/fluid 1 0.0002 ${density} stencil 2 dx ${dx} zwall_velocity 0 0 # dumpxdmf 1000 sflow 0
variable vx equal vcm(all,x)
variable vy equal vcm(all,y)
variable vz equal vcm(all,z)
dump mydumpvtk all vtk 1000 out*.vtp vx vy vz
#dump mydumpvtk all vtk 1000 out*.vtp vx vy vz
fix 2 all lb/viscous

File diff suppressed because it is too large Load Diff

View File

@ -1,346 +0,0 @@
LAMMPS (29 Sep 2021 - Update 1)
Created orthogonal box = (-48.000000 -90.000000 -9.0000000) to (48.000000 630.00000 87.000000)
1 by 8 by 2 MPI processor grid
Created 618 atoms
using box units in orthogonal box = (-48.000000 -90.000000 -9.0000000) to (48.000000 630.00000 87.000000)
create_atoms CPU = 0.002 seconds
618 atoms in group gcylinder1
Created 618 atoms
using box units in orthogonal box = (-48.000000 -90.000000 -9.0000000) to (48.000000 630.00000 87.000000)
create_atoms CPU = 0.000 seconds
618 atoms in group gcylinder2
Created 618 atoms
using box units in orthogonal box = (-48.000000 -90.000000 -9.0000000) to (48.000000 630.00000 87.000000)
create_atoms CPU = 0.000 seconds
618 atoms in group gcylinder3
Created 618 atoms
using box units in orthogonal box = (-48.000000 -90.000000 -9.0000000) to (48.000000 630.00000 87.000000)
create_atoms CPU = 0.000 seconds
618 atoms in group gcylinder4
Created 1876 atoms
using box units in orthogonal box = (-48.000000 -90.000000 -9.0000000) to (48.000000 630.00000 87.000000)
create_atoms CPU = 0.000 seconds
1876 atoms in group gprism1
Created 251 atoms
using box units in orthogonal box = (-48.000000 -90.000000 -9.0000000) to (48.000000 630.00000 87.000000)
create_atoms CPU = 0.000 seconds
251 atoms in group gprism2
Created 64 atoms
using box units in orthogonal box = (-48.000000 -90.000000 -9.0000000) to (48.000000 630.00000 87.000000)
create_atoms CPU = 0.000 seconds
64 atoms in group gprism3
Created 130 atoms
using box units in orthogonal box = (-48.000000 -90.000000 -9.0000000) to (48.000000 630.00000 87.000000)
create_atoms CPU = 0.000 seconds
130 atoms in group gprism4
Created 107 atoms
using box units in orthogonal box = (-48.000000 -90.000000 -9.0000000) to (48.000000 630.00000 87.000000)
create_atoms CPU = 0.000 seconds
107 atoms in group gprism5
Created 12 atoms
using box units in orthogonal box = (-48.000000 -90.000000 -9.0000000) to (48.000000 630.00000 87.000000)
create_atoms CPU = 0.000 seconds
12 atoms in group gball2
Created 50 atoms
using box units in orthogonal box = (-48.000000 -90.000000 -9.0000000) to (48.000000 630.00000 87.000000)
create_atoms CPU = 0.000 seconds
50 atoms in group gprism6
Created 50 atoms
using box units in orthogonal box = (-48.000000 -90.000000 -9.0000000) to (48.000000 630.00000 87.000000)
create_atoms CPU = 0.000 seconds
50 atoms in group gprism7
Created 40 atoms
using box units in orthogonal box = (-48.000000 -90.000000 -9.0000000) to (48.000000 630.00000 87.000000)
create_atoms CPU = 0.000 seconds
40 atoms in group gprism8
Created 40 atoms
using box units in orthogonal box = (-48.000000 -90.000000 -9.0000000) to (48.000000 630.00000 87.000000)
create_atoms CPU = 0.000 seconds
40 atoms in group gprism9
2472 atoms in group wheels
2620 atoms in group not_wheels
744 atoms in group aero_group
4348 atoms in group chassis_group
5092 atoms in group surge_group
Neighbor list info ...
update every 1 steps, delay 0 steps, check yes
max neighbors/atom: 2000, page size: 100000
master list distance cutoff = 2.5255396
ghost atom cutoff = 2.5255396
binsize = 1.2627698, bins = 77 571 77
1 neighbor lists, perpetual/occasional/extra = 1 0 0
(1) pair soft, perpetual
attributes: half, newton on
pair build: half/bin/atomonly/newton
stencil: half/bin/3d
bin: standard
Setting up Verlet run ...
Unit style : cgs
Current step : 0
Time step : 0.2
Per MPI rank memory allocation (min/avg/max) = 1.689 | 2.134 | 5.251 Mbytes
Step Temp E_pair E_mol TotEng Press
0 0 0 0 0 0
5000 29653357 4.7734395e-06 0 3.6037973e-05 3.9588004e-12
10000 27574618 7.2702735e-06 0 3.6343122e-05 4.3745405e-12
15000 26623925 8.3820954e-06 0 3.6452596e-05 4.8194698e-12
20000 25215034 8.4921576e-06 0 3.5077217e-05 5.063101e-12
25000 23697715 8.1953844e-06 0 3.3180683e-05 5.2366712e-12
30000 21932332 7.7249763e-06 0 3.0848972e-05 5.2459369e-12
35000 20053097 7.4020494e-06 0 2.8544705e-05 5.3033614e-12
40000 18850984 6.6058004e-06 0 2.6481028e-05 5.2482481e-12
45000 16878277 5.732186e-06 0 2.3527521e-05 5.0022257e-12
50000 15969329 5.4014349e-06 0 2.2238436e-05 4.9694943e-12
55000 14332838 4.6078293e-06 0 1.9719423e-05 4.7358656e-12
60000 12797460 3.8856372e-06 0 1.737843e-05 4.4893714e-12
65000 11185599 3.3207593e-06 0 1.5114113e-05 4.1387741e-12
70000 9354337.4 2.6757523e-06 0 1.2538345e-05 3.7235349e-12
75000 7853652.1 2.1282565e-06 0 1.0408626e-05 3.3014585e-12
80000 6406387 1.6177406e-06 0 8.3722101e-06 2.8929882e-12
85000 4908480.7 1.0936224e-06 0 6.2687989e-06 2.3307841e-12
90000 3240017.2 7.1493728e-07 0 4.1309966e-06 1.8051168e-12
95000 1767252.1 3.3323177e-07 0 2.1965051e-06 1.1574583e-12
100000 214990.95 4.3210787e-08 0 2.6988298e-07 3.7669124e-13
Loop time of 224.453 on 16 procs for 100000 steps with 5092 atoms
99.5% CPU use with 16 MPI tasks x no OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 0.0041508 | 3.2305 | 26.286 | 475.0 | 1.44
Neigh | 0.48891 | 1.7037 | 10.24 | 245.1 | 0.76
Comm | 0.14989 | 0.36541 | 2.0492 | 80.6 | 0.16
Output | 0.029068 | 0.071852 | 0.077982 | 5.9 | 0.03
Modify | 0.19877 | 22.782 | 185.72 |1252.2 | 10.15
Other | | 196.3 | | | 87.46
Nlocal: 318.250 ave 2599 max 0 min
Histogram: 14 0 0 0 0 0 0 0 0 2
Nghost: 19.6250 ave 160 max 0 min
Histogram: 14 0 0 0 0 0 0 0 0 2
Neighs: 4980.25 ave 40336 max 0 min
Histogram: 14 0 0 0 0 0 0 0 0 2
Total # of neighbors = 79684
Ave neighs/atom = 15.648861
Neighbor list builds = 4955
Dangerous builds = 0
Setting up Verlet run ...
Unit style : cgs
Current step : 100000
Time step : 0.2
Per MPI rank memory allocation (min/avg/max) = 1.741 | 2.195 | 5.326 Mbytes
Step Temp E_pair E_mol TotEng Press
100000 214990.95 0 0 2.266722e-07 2.2773618e-14
105000 103970.88 6.6908938e-08 0 1.7652894e-07 7.0362091e-13
110000 97146.949 6.4681094e-08 0 1.6710639e-07 7.0498855e-13
115000 93498.926 6.6281932e-08 0 1.64861e-07 7.159638e-13
120000 90495.811 6.4208007e-08 0 1.5962079e-07 7.1712077e-13
125000 87959.045 6.5517546e-08 0 1.5825573e-07 7.2366609e-13
130000 86381.625 6.1168787e-08 0 1.5224384e-07 6.9916073e-13
135000 83153.956 6.2250238e-08 0 1.4992225e-07 7.04846e-13
140000 80984.294 6.3000049e-08 0 1.4838452e-07 7.1539396e-13
145000 79533.597 5.9676346e-08 0 1.435313e-07 6.9841788e-13
150000 77000.73 6.1523884e-08 0 1.4270835e-07 7.120063e-13
155000 73683.759 5.9946159e-08 0 1.3763343e-07 7.0660837e-13
160000 72974.826 6.0724099e-08 0 1.3766392e-07 7.1071605e-13
165000 69691.128 6.0460845e-08 0 1.3393855e-07 7.180638e-13
170000 67189.78 5.9914539e-08 0 1.3075499e-07 7.2033578e-13
175000 65055.667 5.6825296e-08 0 1.2541568e-07 6.9616887e-13
180000 61592.611 5.5166561e-08 0 1.2010573e-07 6.8759774e-13
185000 60089.16 5.308612e-08 0 1.1644015e-07 6.8210284e-13
190000 56806.407 5.2255502e-08 0 1.1214841e-07 6.7415401e-13
195000 55413.919 5.2741451e-08 0 1.1116621e-07 6.7996563e-13
200000 52455.282 5.1001789e-08 0 1.0630716e-07 6.7516294e-13
205000 49276.345 5.0081869e-08 0 1.0203558e-07 6.7176307e-13
210000 47382.758 4.9770319e-08 0 9.9727556e-08 6.6796671e-13
215000 45468.582 4.8494832e-08 0 9.6433889e-08 6.640538e-13
220000 43747.344 4.9228162e-08 0 9.5352459e-08 6.7748697e-13
225000 39986.728 4.6849936e-08 0 8.9009291e-08 6.6080957e-13
230000 38695.786 4.7036406e-08 0 8.7834676e-08 6.704184e-13
235000 35860.086 4.5515831e-08 0 8.3324328e-08 6.6254084e-13
240000 33134.143 4.3643806e-08 0 7.8578249e-08 6.4337478e-13
245000 31499.136 4.3700119e-08 0 7.691072e-08 6.5695058e-13
250000 29235.08 4.1903104e-08 0 7.2726633e-08 6.4670433e-13
255000 26534.656 3.990631e-08 0 6.7882692e-08 6.2974614e-13
260000 24003.589 4.0601032e-08 0 6.5908824e-08 6.4499768e-13
265000 21943.577 3.8935897e-08 0 6.2071749e-08 6.3562405e-13
270000 19653.579 3.7402165e-08 0 5.8123595e-08 6.3432146e-13
275000 17275.037 3.6209636e-08 0 5.442329e-08 6.2936445e-13
280000 14732.579 3.5846593e-08 0 5.1379647e-08 6.2971704e-13
285000 12342.93 3.4985594e-08 0 4.7999161e-08 6.3361065e-13
290000 9958.5787 3.3757377e-08 0 4.4257042e-08 6.3251877e-13
295000 7752.6563 3.2166604e-08 0 4.0340491e-08 6.2435198e-13
300000 5153.3153 3.1185774e-08 0 3.6619088e-08 6.2358439e-13
Loop time of 428.577 on 16 procs for 200000 steps with 5092 atoms
99.5% CPU use with 16 MPI tasks x no OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 0.0078672 | 7.2993 | 59.383 | 714.2 | 1.70
Neigh | 0.013027 | 0.032544 | 0.16934 | 27.9 | 0.01
Comm | 0.054276 | 0.37785 | 3.5462 | 147.8 | 0.09
Output | 0.06532 | 0.14529 | 0.1567 | 7.7 | 0.03
Modify | 0.025902 | 44.512 | 365.8 |1764.9 | 10.39
Other | | 376.2 | | | 87.78
Nlocal: 318.250 ave 2602 max 0 min
Histogram: 14 0 0 0 0 0 0 0 0 2
Nghost: 17.5625 ave 143 max 0 min
Histogram: 14 0 0 0 0 0 0 0 0 2
Neighs: 4789.38 ave 38883 max 0 min
Histogram: 14 0 0 0 0 0 0 0 0 2
Total # of neighbors = 76630
Ave neighs/atom = 15.049097
Neighbor list builds = 118
Dangerous builds = 0
Setting up cg style minimization ...
Unit style : cgs
Current step : 300000
Per MPI rank memory allocation (min/avg/max) = 1.741 | 2.335 | 6.451 Mbytes
Step Temp E_pair E_mol TotEng Press
300000 5153.3153 3.1185774e-08 0 3.6619088e-08 6.2358439e-13
301000 5153.3153 3.1178966e-08 0 3.661228e-08 6.2353588e-13
Loop time of 2.19014 on 16 procs for 1000 steps with 5092 atoms
99.5% CPU use with 16 MPI tasks x no OpenMP threads
Minimization stats:
Stopping criterion = max iterations
Energy initial, next-to-last, final =
3.11857740502293e-08 3.11789729919519e-08 3.11789661924564e-08
Force two-norm initial, final = 8.1990455e-08 8.1892870e-08
Force max component initial, final = 3.0741586e-09 3.0685608e-09
Final line search alpha, max atom move = 1.0000000 3.0685608e-09
Iterations, force evaluations = 1000 1000
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 5.1437e-05 | 0.056621 | 0.4634 | 62.9 | 2.59
Neigh | 0 | 0 | 0 | 0.0 | 0.00
Comm | 0.0001289 | 0.0024177 | 0.028614 | 14.3 | 0.11
Output | 3.6288e-05 | 3.7468e-05 | 3.8983e-05 | 0.0 | 0.00
Modify | 4.4937e-05 | 0.20167 | 1.6571 | 118.8 | 9.21
Other | | 1.929 | | | 88.09
Nlocal: 318.250 ave 2602 max 0 min
Histogram: 14 0 0 0 0 0 0 0 0 2
Nghost: 17.5625 ave 143 max 0 min
Histogram: 14 0 0 0 0 0 0 0 0 2
Neighs: 4789.38 ave 38883 max 0 min
Histogram: 14 0 0 0 0 0 0 0 0 2
Total # of neighbors = 76630
Ave neighs/atom = 15.049097
Neighbor list builds = 0
Dangerous builds = 0
Using a lattice-Boltzmann grid of 96 by 720 by 97 total grid points. (../fix_lb_fluid.cpp:477)
Local Grid Geometry created. (../fix_lb_fluid.cpp:1023)
First Run initialized
4 rigid bodies with 2472 atoms
Neighbor list info ...
update every 1 steps, delay 0 steps, check yes
max neighbors/atom: 2000, page size: 100000
master list distance cutoff = 1.7
ghost atom cutoff = 3
binsize = 0.85, bins = 113 848 113
1 neighbor lists, perpetual/occasional/extra = 1 0 0
(1) pair lj/cut, perpetual
attributes: half, newton on
pair build: half/bin/atomonly/newton
stencil: half/bin/3d
bin: standard
Setting up Verlet run ...
Unit style : cgs
Current step : 0
Time step : 0.025
Per MPI rank memory allocation (min/avg/max) = 4.238 | 4.872 | 9.308 Mbytes
Step v_number_all v_node_mass f_FL[2] f_5[1] f_5[2] f_5[3]
0 5092 98.193244 265447.33 0 0 0
100 5092 98.193244 265447.33 0.21831855 10.819389 -2.3665527
200 5092 98.193244 265447.33 0.081352555 13.33314 0.24750908
300 5092 98.193244 265447.33 -0.13723109 12.179202 0.35802438
400 5092 98.193244 265447.33 -0.057588432 14.508288 3.3901771
500 5092 98.193244 265447.33 -0.05026018 11.590396 3.3204264
600 5092 98.193244 265447.33 0.0092174774 10.829799 0.55313683
700 5092 98.193244 265447.33 -0.20861033 10.801467 1.5288445
800 5092 98.193244 265447.33 -0.17761042 12.668514 1.8746262
900 5092 98.193244 265447.33 -0.046957187 10.410009 2.5061791
1000 5092 98.193244 265447.33 0.017637786 10.502295 1.4603753
1100 5092 98.193244 265447.33 -0.1992929 9.5275081 1.926958
1200 5092 98.193244 265447.33 -0.10276752 12.112636 2.6301022
1300 5092 98.193244 265447.33 0.055577062 10.390509 2.8449094
1400 5092 98.193244 265447.33 0.13383948 10.283919 3.2933858
1500 5092 98.193244 265447.33 -0.10521833 9.9952804 3.0181533
1600 5092 98.193244 265447.33 -0.045015836 12.123929 3.0026447
1700 5092 98.193244 265447.33 0.035497645 10.360672 1.0635496
1800 5092 98.193244 265447.33 0.08147355 9.3665483 3.0104928
1900 5092 98.193244 265447.33 -0.14473824 8.5432989 2.9728625
2000 5092 98.193244 265447.33 -0.041564059 11.63113 1.5867575
2100 5092 98.193244 265447.33 0.0045129003 9.9456671 1.436601
2200 5092 98.193244 265447.33 -0.0096402369 9.8767813 1.6785458
2300 5092 98.193244 265447.33 -0.10765247 10.631171 3.1290797
2400 5092 98.193244 265447.33 -0.12241137 9.8917039 3.56271
2500 5092 98.193244 265447.33 0.017303567 10.134216 2.5224533
2600 5092 98.193244 265447.33 -0.093777044 10.200634 1.3519144
2700 5092 98.193244 265447.33 -0.15578186 9.6684009 2.5384049
2800 5092 98.193244 265447.33 -0.094570471 11.481058 2.5282483
2900 5092 98.193244 265447.33 0.089970872 10.289575 1.3841899
3000 5092 98.193244 265447.33 0.041066985 10.330879 1.6643933
3100 5092 98.193244 265447.33 -0.088145926 9.8790269 1.9878739
3200 5092 98.193244 265447.33 -0.021810579 10.686768 3.0303691
3300 5092 98.193244 265447.33 0.015098791 10.043207 1.6937351
3400 5092 98.193244 265447.33 0.031969826 11.142544 0.63633496
3500 5092 98.193244 265447.33 -0.10691176 9.6246461 0.81948178
3600 5092 98.193244 265447.33 -0.082628312 10.739668 2.3316856
3700 5092 98.193244 265447.33 0.062856304 9.2410456 2.8655012
3800 5092 98.193244 265447.33 0.035815853 9.5050341 2.073665
3900 5092 98.193244 265447.33 -0.11890515 8.9851356 2.3096977
4000 5092 98.193244 265447.33 -0.088669613 11.336617 2.2657778
4100 5092 98.193244 265447.33 0.22672389 9.4970608 1.8177659
4200 5092 98.193244 265447.33 0.12883496 9.1661101 1.8263211
4300 5092 98.193244 265447.33 0.058908552 10.145263 2.904343
4400 5092 98.193244 265447.33 -0.14535243 11.420664 1.3192619
4500 5092 98.193244 265447.33 0.16208072 10.039004 0.83706642
4600 5092 98.193244 265447.33 0.29778162 9.8285181 1.1165466
4700 5092 98.193244 265447.33 0.20330429 9.7335442 1.6344298
4800 5092 98.193244 265447.33 0.035461857 10.651313 1.7290641
4900 5092 98.193244 265447.33 0.079871784 8.9574124 1.5475086
5000 5092 98.193244 265447.33 -0.34561831 9.7951232 2.004021
Loop time of 593.648 on 16 procs for 5000 steps with 5092 atoms
98.8% CPU use with 16 MPI tasks x no OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 0.0028639 | 0.15264 | 0.46504 | 41.8 | 0.03
Neigh | 1.5874 | 2.0111 | 2.8263 | 25.2 | 0.34
Comm | 0.13471 | 0.27155 | 0.52658 | 25.6 | 0.05
Output | 0.25503 | 0.25532 | 0.25559 | 0.0 | 0.04
Modify | 571.75 | 581.55 | 590.84 | 26.3 | 97.96
Other | | 9.407 | | | 1.58
Nlocal: 318.250 ave 5092 max 0 min
Histogram: 15 0 0 0 0 0 0 0 0 1
Nghost: 0.00000 ave 0 max 0 min
Histogram: 16 0 0 0 0 0 0 0 0 0
Neighs: 2221.19 ave 35539 max 0 min
Histogram: 15 0 0 0 0 0 0 0 0 1
Total # of neighbors = 35539
Ave neighs/atom = 6.9793794
Neighbor list builds = 2500
Dangerous builds = 0
LB equilibriumDist time: 95.366086
LB update time: 209.233008
LB PCalc time: 163.998163
LB fluidForce time: 60.986279
LB CorrectU time: 45.025690
Total wall time: 0:20:49

View File

@ -6,11 +6,12 @@
# under pressure-driven lattice-Boltzmann fluid flow #
# #
# To run this example, LAMMPS needs to be compiled with a the following #
# packages: MOLECULE, RIGID, USER-LB, USER-VTK #
# packages: MOLECULE, RIGID, LATBOLTZ, USER-VTK #
# #
#To run this example on N cores, use command: #
# mpirun -n N /LAMMPS/EXE/FILE -in polymer.in > output.out #
# mpirun -n N /LAMMPS/EXE/FILE -in in.polymer > output.out #
# #
# If uncommented: #
# Sample output for polymer from this run can be found in the file: #
# 'translocationdump.lammpstrj' #
# and viewed using, the VMD software. #
@ -28,7 +29,7 @@ dimension 3
boundary p p p
atom_style hybrid molecular
special_bonds fene
read_data translocation.data
read_data data.translocation
#---------------------------------------------------------------------------
#Creating a atomistic wall on an FCC lattice and removing the block from the
@ -104,7 +105,7 @@ group WallAtoms type 3
# increases the diffusive dynamics by a corresponding factor of 10.
# lattice spacing dx=1.0, and mass unit, dm=0.00009982071 (makes density 1)
# Use a thermal lattice-Boltzmann fluid (temperature 300K, random number
# seed=15003). This enables the particles to undergo Brownian motion in
# seed=5252). This enables the particles to undergo Brownian motion in
# the fluid.
# In this case we use the scaleGamma argument to set the mass of the WallAtoms
# to infinity.
@ -112,7 +113,7 @@ group WallAtoms type 3
# which should be similar to the average flow field in the case with noise.
#----------------------------------------------------------------------------
fix 1 FluidAtoms lb/fluid 1 0.1 0.00009982071 dx 1.0 scaleGamma 3 -1 stencil 2 pressurebcx 1200 noise 300.0 5252
#fix 1 FluidAtoms lb/fluid 1 0.1 0.00009982071 dx 1.0 scaleGamma 3 -1 stencil 2 pressurebcx 1200 dumpxdmf 1000 flow5252
#fix 1 FluidAtoms lb/fluid 1 0.1 0.00009982071 dx 1.0 scaleGamma 3 -1 stencil 2 pressurebcx 1200 dumpxdmf 1000 flow 0
#----------------------------------------------------------------------------
# Apply the force from the fluid to the particles, and integrate their
@ -172,9 +173,9 @@ thermo 1000
# trajectory and vtk format (commented out here). Write xyz dump file
#--------------------------------------------------------------------------------
variable numofsteps equal 400001
dump 1 ForceAtoms custom 500 translocationdump.lammpstrj id xu yu zu vx vy vz
#dump 1 ForceAtoms custom 500 translocationdump.lammpstrj id xu yu zu vx vy vz
#dump 2 ForceAtoms vtk 1000 dump*.translocation.vtk id xu yu zu vx vy vz
dump 4 WallAtoms xyz $(v_numofsteps-1) walldump.xyz
#dump 4 WallAtoms xyz $(v_numofsteps-1) walldump.xyz
#restart 50000 4nmrestart.*

View File

@ -0,0 +1,678 @@
LAMMPS (17 Feb 2022)
#===========================================================================#
# Immersed Boundary Wall #
# #
# Run consists of a 32-bead coarse-grained polymer #
# translocating through a solid-state atomistic wall #
# under pressure-driven lattice-Boltzmann fluid flow #
# #
# To run this example, LAMMPS needs to be compiled with a the following #
# packages: MOLECULE, RIGID, LATBOLTZ, USER-VTK #
# #
#To run this example on N cores, use command: #
# mpirun -n N /LAMMPS/EXE/FILE -in in.polymer > output.out #
# #
# If uncommented: #
# Sample output for polymer from this run can be found in the file: #
# 'translocationdump.lammpstrj' #
# and viewed using, the VMD software. #
# OR #
# 'dump.translocation.vtk' #
# and viewed using the Paraview software. #
# #
# Sample output for the wall from this run can be found in the file: #
# 'walldump.xyz' #
# and can be viewed using the VMD or Paraview Software. #
#===========================================================================#
units nano
dimension 3
boundary p p p
atom_style hybrid molecular
special_bonds fene
read_data data.translocation
Reading data file ...
orthogonal box = (0 0 0) to (48 32 32)
2 by 1 by 2 MPI processor grid
reading atoms ...
992 atoms
scanning bonds ...
1 = max bonds/atom
reading bonds ...
31 bonds
Finding 1-2 1-3 1-4 neighbors ...
special bond factors lj: 0 1 1
special bond factors coul: 0 1 1
2 = max # of 1-2 neighbors
2 = max # of special neighbors
special bonds CPU = 0.000 seconds
read_data CPU = 0.044 seconds
#---------------------------------------------------------------------------
#Creating a atomistic wall on an FCC lattice and removing the block from the
#middle to create the nanopore
#---------------------------------------------------------------------------
lattice fcc 1.0
Lattice spacing in x,y,z = 1 1 1
region wall block 28 38 0 32 0 32
create_atoms 3 region wall
Created 43008 atoms
using lattice units in orthogonal box = (0 0 0) to (48 32 32)
create_atoms CPU = 0.011 seconds
region hole block 28 38 14 18 14 18
delete_atoms region hole compress no
Deleted 851 atoms, new total = 43149
#----------------------------------------------------------------------------
# Need a neighbor bin size smaller than the lattice-Boltzmann grid spacing
# to ensure that the particles belonging to a given processor remain inside
# that processors lattice-Boltzmann grid.
# The communcation cutoff is set to 2.5 dx to ensure that all particles in the
# processor ghost fluid region (of width 2dx) are known to local processor.
#----------------------------------------------------------------------------
neighbor 0.5 bin
neigh_modify delay 0 every 1 check yes
neigh_modify exclude type 2 2
neigh_modify exclude type 2 1
neigh_modify exclude type 2 3
neigh_modify exclude type 3 3
comm_modify cutoff 2.5
#----------------------------------------------------------------------------
# Implement a hard-sphere interaction between the particles at the center of
# each monomer with each other and the wall atoms
# (use a truncated and shifted Lennard-Jones potential).
#----------------------------------------------------------------------------
bond_style fene
bond_coeff 1 60.0 2.25 4.14195 1.5
pair_style lj/cut 1.68369
pair_coeff * * 0 1.5
pair_coeff 1 1 4.14195 1.5 1.68369
pair_coeff 1 3 4.14195 1.5 1.68369
#-----------------------------------------------------------------------------
# The mass is set 4/3 PI r^3 fluid_density/31 , where r=0.617, 31 is number of
# nodes in a single monomer. The mass of wall atoms is chosen heavy as they
# are fixed.
# ----------------------------------------------------------------------------
mass * 0.00000318
#-----------------------------------------------------------------------------
timestep 0.00005
#----------------------------------------------------------------------------
# ForceAtoms are the particles at the center of each monomer which
# do not interact with the fluid, but are used to implement the hard-sphere
# interactions.
# FluidAtoms are the particles representing the surface of the monomer
# which do interact with the fluid. The nanopore particles are also included
# in this group as they interact with the fluid.
# Polymer is the entire set of monomers of the composite polymer chain.
# WallAtoms are the particles of the nanopore.
#----------------------------------------------------------------------------
group ForceAtoms type 1
32 atoms in group ForceAtoms
group FluidAtoms type 2 3
43117 atoms in group FluidAtoms
group Polymer type 1 2
992 atoms in group Polymer
group WallAtoms type 3
42157 atoms in group WallAtoms
#---------------------------------------------------------------------------
# Create a lattice-Boltzmann fluid covering the simulation domain.
# This fluid feels a force due to the particles specified through FluidAtoms
# (however, this fix does not explicity apply a force back on to these
# particles. This is accomplished through the use of the lb/viscous fix).
# We set fluid viscosity = 0.1 and fluid density = 0.00009982071 which
# means the kinematic viscosity is idential to that of water but the
# dynamic viscosity is a factor of 10 less than that of water which
# increases the diffusive dynamics by a corresponding factor of 10.
# lattice spacing dx=1.0, and mass unit, dm=0.00009982071 (makes density 1)
# Use a thermal lattice-Boltzmann fluid (temperature 300K, random number
# seed=5252). This enables the particles to undergo Brownian motion in
# the fluid.
# In this case we use the scaleGamma argument to set the mass of the WallAtoms
# to infinity.
# The commented out line can be substituted to look at the flow without noise
# which should be similar to the average flow field in the case with noise.
#----------------------------------------------------------------------------
fix 1 FluidAtoms lb/fluid 1 0.1 0.00009982071 dx 1.0 scaleGamma 3 -1 stencil 2 pressurebcx 1200 noise 300.0 5252
Using a lattice-Boltzmann grid of 48 by 32 by 32 total grid points. (../fix_lb_fluid.cpp:486)
Local Grid Geometry created. (../fix_lb_fluid.cpp:1018)
#fix 1 FluidAtoms lb/fluid 1 0.1 0.00009982071 dx 1.0 scaleGamma 3 -1 stencil 2 pressurebcx 1200 dumpxdmf 1000 flow 0
#----------------------------------------------------------------------------
# Apply the force from the fluid to the particles, and integrate their
# motion, constraining each monomer to move and rotate as a single rigid
# spherical object.
# Since both the ForceAtoms (central atoms), and the FluidAtoms (spherical
# shell) should move and rotate together, this fix is applied to all Polymer
# of atoms in the system.
# The wall atoms are frozen in space and all the calculated forces on the atoms
# are set to zero at each timestep.
#----------------------------------------------------------------------------#
fix 2 FluidAtoms lb/viscous
fix 3 Polymer rigid/small molecule
create bodies CPU = 0.001 seconds
32 rigid bodies with 992 atoms
0.70019686 = max distance from body owner to body atom
fix freeze WallAtoms setforce 0 0 0
#----------------------------------------------------------------------------
# Write position and velocity coordinates into a file every 2000 time steps.
#----------------------------------------------------------------------------
#variable x1 equal x[1]
#variable y1 equal y[1]
#variable z1 equal z[1]
#variable vx1 equal vx[1]
#variable vy1 equal vy[1]
#variable vz1 equal vz[1]
#variable x2 equal x[249]
#variable y2 equal y[249]
#variable z2 equal z[249]
#variable vx2 equal vx[249]
#variable vy2 equal vy[249]
#variable vz2 equal vz[249]
#variable x3 equal x[497]
#variable y3 equal y[497]
#variable z3 equal z[497]
#variable vx3 equal vx[497]
#variable vy3 equal vy[497]
#variable vz3 equal vz[497]
#variable x4 equal x[745]
#variable y4 equal y[745]
#variable z4 equal z[745]
#variable vx4 equal vx[745]
#variable vy4 equal vy[745]
#variable vz4 equal vz[745]
#thermo_style custom v_x1 v_y1 v_z1 v_vx1 v_vy1 v_vz1 v_x2 v_y2 v_z2 v_vx2 v_vy2 v_vz2 v_x3 v_y3 v_z3 v_vx3 v_vy3 v_vz3 v_x4 v_y4 v_z4 v_x4 v_y4 v_z4
#thermo 10
#---------------------------------------------------------------------------------
# Write coordinates of the centre of mass and radius of gyration tensor components
#---------------------------------------------------------------------------------
compute centre ForceAtoms com
compute rg ForceAtoms gyration
thermo_style custom c_rg c_rg[1] c_rg[2] c_rg[3] c_rg[4] c_rg[5] c_rg[6] c_centre[1] c_centre[2] c_centre[3]
thermo 1000
#--------------------------------------------------------------------------------
# Define number of steps variable. Write dump files for the polymer in both LAMMPS
# trajectory and vtk format (commented out here). Write xyz dump file
#--------------------------------------------------------------------------------
variable numofsteps equal 400001
#dump 1 ForceAtoms custom 500 translocationdump.lammpstrj id xu yu zu vx vy vz
#dump 2 ForceAtoms vtk 1000 dump*.translocation.vtk id xu yu zu vx vy vz
#dump 4 WallAtoms xyz $(v_numofsteps-1) walldump.xyz
#restart 50000 4nmrestart.*
run ${numofsteps} # For 250001 steps without noise, 16 minutes on AMD Ryzen Threadripper 1950X 16-Core, 41 mintues on Intel(R) Core(TM) i7-10510U CPU @ 1.80GHz 4-core
run 400001
CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE
Your simulation uses code contributions which should be cited:
- fix lb/fluid command:
@Article{Denniston et al.,
author = {C. Denniston, N. Afrasiabian, M.G. Cole-Andre,F.E. Mackay, S.T.T. Ollila, T. Whitehead},
title = {LAMMPS lb/fluid fix version 2: Improved Hydrodynamic Forces Implemented into LAMMPS through a lattice-Boltzmann fluid}, journal = {Comp.~Phys.~Comm.},
year = 2022,
volume = 275,
pages = {108318}
}
CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE-CITE
generated 0 of 3 mixed pair_coeff terms from geometric mixing rule
Neighbor list info ...
update every 1 steps, delay 0 steps, check yes
max neighbors/atom: 2000, page size: 100000
master list distance cutoff = 2.18369
ghost atom cutoff = 2.5
binsize = 1.091845, bins = 44 30 30
1 neighbor lists, perpetual/occasional/extra = 1 0 0
(1) pair lj/cut, perpetual
attributes: half, newton on
pair build: half/bin/newton
stencil: half/bin/3d
bin: standard
WARNING: Communication cutoff 2.5 is shorter than a bond length based estimate of 2.6825. This may lead to errors. (../comm.cpp:723)
Per MPI rank memory allocation (min/avg/max) = 11.44 | 20.02 | 30.41 Mbytes
c_rg c_rg[1] c_rg[2] c_rg[3] c_rg[4] c_rg[5] c_rg[6] c_centre[1] c_centre[2] c_centre[3]
5.6791248 22.61273 5.110682 4.5290465 6.700106 3.8164024 3.4765595 12.000543 11.573384 10.635513
5.5867637 21.257084 5.1321825 4.822662 5.634175 3.7281301 3.6276614 11.962266 11.452708 10.387815
5.668832 21.596665 5.6165458 4.9224455 5.647044 4.0344015 4.0048875 11.821122 11.451665 10.569963
5.6598062 20.600614 6.0567785 5.3760133 6.6053545 4.0554069 4.415185 11.9427 11.557594 10.571476
5.8889045 23.387471 6.0242487 5.2674768 7.6894041 4.652066 4.2066414 11.8858 11.664507 10.642731
6.1002855 26.57562 5.2572121 5.3806503 7.2669892 5.4963641 3.9022322 12.020013 11.658221 10.555459
6.3802913 30.250297 4.3928513 6.0649685 7.4030928 6.8471704 3.7581107 11.942494 11.656142 10.62799
6.4211512 30.052916 4.0869264 7.0913409 6.4493764 7.3015592 4.274762 11.983282 11.552276 10.499697
6.4029294 29.889365 4.0196733 7.0884671 6.5903461 6.8110154 4.0382413 11.9905 11.501962 10.425593
6.3161388 28.57849 3.8057293 7.5093902 5.7575295 6.6646378 4.1567522 12.113646 11.531039 10.529351
6.4338248 29.706116 3.4974686 8.1905167 5.5124312 7.9019084 4.5042964 12.426431 11.340065 10.399931
6.5364361 30.677501 3.6562753 8.3912202 5.1990078 7.3140488 4.8107991 12.472307 11.438123 10.425278
6.6943364 31.785713 3.6152177 9.4132091 5.6058833 7.7153622 5.1164739 12.583773 11.540381 10.504743
6.7208928 32.711587 3.7061318 8.7526817 6.8070192 6.7581599 4.5471865 12.517937 11.50458 10.470699
6.6375209 30.970999 3.6881577 9.3975267 7.3010233 5.4926275 4.1912585 12.684547 11.592933 10.675434
6.8324705 33.049694 4.0146629 9.6182957 8.7999601 7.2978407 4.3307267 12.660956 11.750078 10.71392
6.779281 33.083238 3.9016444 8.9737675 8.7458049 7.7168786 4.3419836 12.501914 11.814334 10.76077
6.6792036 32.828561 3.2387228 8.5444765 7.7842222 8.5969674 3.4661156 12.790705 11.968511 10.642253
6.5389782 31.772538 3.0722036 7.9134935 6.9299213 8.9153301 3.3680216 12.861509 11.85712 10.51657
6.4748361 31.540469 3.0212413 7.3617912 6.3057097 8.4191336 3.2625709 12.657649 11.704529 10.392716
6.3985321 29.710818 2.6283214 8.6020734 5.8853082 9.3362301 3.397929 12.688643 11.780723 10.424565
6.5059208 31.090823 2.6100712 8.6261116 6.5141681 10.225958 3.6286489 12.725294 12.0647 10.108992
6.4892221 30.985335 2.4997331 8.6249351 6.4886837 10.018904 3.3600422 12.855965 12.036702 9.9287436
6.4795231 30.758266 2.8637784 8.3621758 7.1748369 10.562754 3.5302178 12.896069 12.260403 10.11639
6.4439652 28.968436 2.3431114 10.21314 6.6140604 10.553576 3.2945616 12.721326 12.375786 10.216421
6.4585206 28.635315 2.1556643 10.921509 6.5660708 11.04493 3.0441915 12.688395 12.432736 10.446406
6.4828021 29.600008 2.0553059 10.371409 6.1193108 11.704064 2.6435946 12.670355 12.450579 10.754392
6.562285 30.709961 1.9685065 10.385117 5.9437889 12.632018 2.3117868 12.914159 12.707126 10.756693
6.6264405 31.273462 2.410996 10.225256 7.2739788 12.4541 2.9699821 12.81881 12.66146 10.672797
6.7415185 32.457723 2.3242798 10.666069 7.2496003 13.12296 2.9964595 12.784276 12.647643 10.60663
6.9008565 33.656929 2.7042837 11.260607 8.5449163 14.476583 3.8202075 12.710092 12.579311 10.58884
7.061302 35.296351 3.5107103 11.054924 10.064083 15.035769 4.4216887 13.175009 12.627831 10.482424
7.1032842 36.482445 3.6799052 10.294296 10.673901 14.749052 4.3151465 13.200713 12.621232 10.584217
7.1414828 36.185373 4.297132 10.518271 11.586979 15.307501 5.1527843 13.234596 12.688071 10.498004
6.9448583 33.990665 2.8733935 11.366998 8.6757703 15.425795 3.8675398 13.552629 12.904762 10.360584
7.0012016 32.933829 3.6133714 12.469623 9.9078147 16.084749 4.8325968 13.711685 12.775596 10.565942
7.0165074 33.824117 3.4135972 11.993662 9.4449537 15.727888 4.3550075 13.648024 12.818681 10.403745
7.0456647 33.8123 3.8273095 12.001781 9.9901691 15.354572 4.7262984 13.704142 12.865313 10.379126
7.0704851 35.593578 4.4753601 9.922821 10.815193 14.191266 4.3671704 13.568897 12.968225 10.27463
7.2622103 36.997176 5.0189577 10.723566 11.931013 15.173822 5.1502453 13.704027 12.992135 10.023658
7.3237142 36.361814 5.4045676 11.870409 12.36988 16.523084 5.9090879 13.732808 12.986696 9.6059086
7.4085072 37.338445 4.6635913 12.883943 11.559431 18.221441 5.9749906 13.822776 13.056276 9.4491435
7.5435451 38.642986 4.8108253 13.451262 11.762286 19.25048 6.2716652 13.76389 13.028638 9.3396345
7.5041212 37.242572 4.2407367 14.828527 10.397401 20.55556 6.0212974 13.656341 13.093764 9.1329939
7.4871925 37.814264 4.2622814 13.981507 10.161983 20.447606 5.7021938 13.637928 13.132284 8.9440227
7.3541675 36.518431 4.6241377 12.941211 10.094391 18.64877 5.616799 13.607907 13.208134 8.8058927
7.3886114 36.915543 4.9408074 12.735228 10.630813 18.896827 5.7094032 13.752166 13.333961 8.6671299
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5.6598728 10.885534 12.78006 8.368566 -9.4902335 -5.5729542 2.3342113 52.174765 9.8576644 13.478152
5.5904285 10.369004 11.992327 8.8915605 -8.76821 -6.5618387 3.193141 52.02322 9.81365 13.359337
5.3741317 9.2405221 11.282499 8.3582708 -8.3727501 -5.8355484 3.3370204 51.866988 9.6388128 13.149419
5.2958639 7.1886261 12.977706 7.8798428 -8.1460083 -4.3881982 3.1812473 51.731285 9.4481046 13.141767
5.402274 7.7470987 12.805009 8.6324567 -8.2179556 -5.2078319 3.1582169 51.804468 9.3848268 13.29982
5.6483697 9.1018115 13.787511 9.0147582 -9.5567762 -5.2509413 3.01344 51.996155 9.1895779 13.300818
5.601747 9.3576298 13.664124 8.3578152 -9.1305397 -5.6217469 3.1180397 52.111675 9.0877198 13.152291
5.5124655 8.9590865 13.684809 7.7433812 -8.7096272 -4.9754549 2.3270945 52.254841 8.8351679 13.21258
5.3988525 8.3910773 12.905567 7.8509638 -7.5245856 -5.0395065 2.3481322 52.263451 8.6620437 13.36041
5.3040294 7.1552401 13.671387 7.3061011 -6.4221018 -4.6709838 2.4084256 52.472518 8.5802722 13.163192
5.3191867 8.2855513 13.241158 6.7670382 -6.7383913 -5.0033962 2.180615 52.183195 8.4360708 13.155001
5.3566829 9.1699753 12.113433 7.410643 -6.9922004 -5.2635118 2.1340211 52.182193 8.6892458 12.963203
5.2008701 8.5170789 12.263922 6.2680487 -6.167442 -4.7136418 1.8542571 52.273008 8.793237 12.860908
4.9919839 7.5835928 11.100441 6.2358693 -5.5481586 -4.3678074 2.2821251 52.335558 8.6666578 12.845611
5.1501062 7.7815697 13.038317 5.7037072 -6.8790721 -3.6697847 2.040492 52.205555 8.4930645 12.655618
5.1693291 8.0359508 12.95638 5.7296317 -7.0564916 -3.8355504 1.9139954 51.959464 8.6423307 12.53081
5.2077361 8.8897921 12.530741 5.6999822 -7.3764196 -3.4364468 0.90215052 51.838638 8.8383661 12.569833
5.1502621 9.0122487 11.77156 5.741391 -7.5423335 -3.5938885 0.88296798 51.822123 8.8415423 12.937326
5.1896461 9.2854716 11.585603 6.0613521 -7.9119183 -3.6359858 0.5268641 51.860261 8.8721682 12.909944
5.2091113 9.6776461 11.157445 6.2997493 -8.1731907 -3.4404707 0.52470693 51.955093 9.1847066 12.772563
5.1487426 9.9171868 11.039362 5.5530018 -8.1346651 -2.7100655 -0.081164579 51.895699 8.999741 12.652846
5.1505237 9.8208447 11.636584 5.0704661 -8.0048156 -2.9229925 -0.38313937 51.846388 9.0258296 12.575848
5.0498117 9.2192048 11.698429 4.582964 -8.0200334 -2.3752653 -0.36708212 51.782671 9.3279563 12.544301
5.0573261 9.5294354 11.88401 4.1631027 -7.5144401 -2.4806001 -0.65999869 51.913647 9.3854399 12.401641
5.0811302 9.3959886 11.808889 4.6130067 -7.0405242 -2.5037582 -1.2769295 52.005268 9.6317929 12.370306
5.1166203 9.3288823 12.45974 4.3911809 -7.2243887 -2.5156447 -1.0041202 52.088074 9.6003874 12.346141
5.2045026 10.450174 12.394069 4.2426047 -7.9173751 -2.3028313 -1.1127183 52.287028 9.4892589 12.53898
4.9696787 9.062347 11.35845 4.2769086 -5.9385609 -2.12694 -1.6437193 52.757473 9.3837415 12.690198
4.9877386 9.1392669 11.48237 4.2558994 -5.5388281 -2.4000297 -1.4755205 52.764043 9.6175641 12.662539
4.8284868 7.8848934 11.225247 4.2041439 -5.3018102 -1.8375233 -1.5376081 53.041399 9.451146 12.688581
4.8237993 7.3389077 11.55467 4.3754617 -5.6106066 -1.4157198 -1.5132442 53.279168 9.5338443 12.633672
4.8314395 7.3896489 11.215416 4.7377428 -6.0145077 -1.7225945 -0.69655935 53.818846 9.5420479 12.368433
4.8765154 8.0784101 10.572769 5.1292237 -6.3322936 -1.8164643 -0.64830774 53.966255 9.5234973 12.344916
4.9186704 8.6712371 10.378472 5.1436092 -6.5208107 -2.2558782 -0.71144157 53.70529 9.6007242 12.232148
4.9251997 7.5655071 11.081228 5.610857 -6.3320091 -2.1481047 -1.5093486 53.793445 9.7713313 12.221771
4.8304168 7.0698238 10.038672 6.2244307 -5.0756276 -2.9001352 -1.4313228 53.859149 9.7696343 12.172882
4.7501946 7.6420634 8.8240346 6.0982512 -4.983994 -2.7043286 -1.3804654 53.836157 10.006061 12.283256
4.7494587 8.0630304 8.6152981 5.879029 -5.1608283 -2.6103501 -1.0780193 53.72011 10.254128 12.239037
4.7488472 8.0743919 8.6038151 5.8733427 -5.1682417 -2.6109895 -1.0859021 53.721404 10.254774 12.239811
Loop time of 13125.6 on 4 procs for 400001 steps with 43149 atoms
Performance: 131.651 ns/day, 0.182 hours/ns, 30.475 timesteps/s
99.2% CPU use with 4 MPI tasks x no OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 2.1325 | 53.155 | 102.87 | 679.4 | 0.40
Bond | 1.1958 | 1.5762 | 2.4077 | 38.6 | 0.01
Neigh | 546.84 | 548 | 549.18 | 4.6 | 4.18
Comm | 186.71 | 228.91 | 309.92 | 321.6 | 1.74
Output | 0.13475 | 0.18939 | 0.30625 | 16.1 | 0.00
Modify | 12088 | 12129 | 12174 | 27.8 | 92.41
Other | | 164.7 | | | 1.25
Nlocal: 10787.2 ave 21162 max 24 min
Histogram: 2 0 0 0 0 0 0 0 0 2
Nghost: 6082.25 ave 11981 max 60 min
Histogram: 2 0 0 0 0 0 0 0 0 2
Neighs: 3 ave 12 max 0 min
Histogram: 3 0 0 0 0 0 0 0 0 1
Total # of neighbors = 12
Ave neighs/atom = 0.0002781061
Ave special neighs/atom = 0.0014368815
Neighbor list builds = 7486
Dangerous builds = 0
Total wall time: 3:38:45

View File

@ -1,488 +0,0 @@
LAMMPS (29 Sep 2021 - Update 1)
Reading data file ...
orthogonal box = (0.0000000 0.0000000 0.0000000) to (48.000000 32.000000 32.000000)
4 by 4 by 4 MPI processor grid
reading atoms ...
992 atoms
scanning bonds ...
1 = max bonds/atom
reading bonds ...
31 bonds
Finding 1-2 1-3 1-4 neighbors ...
special bond factors lj: 0 1 1
special bond factors coul: 0 1 1
2 = max # of 1-2 neighbors
2 = max # of special neighbors
special bonds CPU = 0.007 seconds
read_data CPU = 0.053 seconds
Lattice spacing in x,y,z = 1.0000000 1.0000000 1.0000000
Created 43008 atoms
using lattice units in orthogonal box = (0.0000000 0.0000000 0.0000000) to (48.000000 32.000000 32.000000)
create_atoms CPU = 0.004 seconds
Deleted 851 atoms, new total = 43149
32 atoms in group ForceAtoms
43117 atoms in group FluidAtoms
992 atoms in group Polymer
42157 atoms in group WallAtoms
Using a lattice-Boltzmann grid of 48 by 32 by 32 total grid points. (../fix_lb_fluid.cpp:477)
Local Grid Geometry created. (../fix_lb_fluid.cpp:1023)
First Run initialized
create bodies CPU = 0.002 seconds
32 rigid bodies with 992 atoms
0.70019686 = max distance from body owner to body atom
Neighbor list info ...
update every 1 steps, delay 0 steps, check yes
max neighbors/atom: 2000, page size: 100000
master list distance cutoff = 2.18369
ghost atom cutoff = 2.5
binsize = 1.091845, bins = 44 30 30
1 neighbor lists, perpetual/occasional/extra = 1 0 0
(1) pair lj/cut, perpetual
attributes: half, newton on
pair build: half/bin/newton
stencil: half/bin/3d
bin: standard
Setting up Verlet run ...
Unit style : nano
Current step : 0
Time step : 5e-05
WARNING: Communication cutoff 2.5 is shorter than a bond length based estimate of 2.6825. This may lead to errors. (../comm.cpp:730)
Per MPI rank memory allocation (min/avg/max) = 9.696 | 13.21 | 19.34 Mbytes
c_rg c_rg[1] c_rg[2] c_rg[3] c_rg[4] c_rg[5] c_rg[6] c_centre[1] c_centre[2] c_centre[3]
5.6791248 22.61273 5.110682 4.5290465 6.700106 3.8164024 3.4765595 12.000543 11.573384 10.635513
5.5296724 22.405009 4.4498228 3.7224454 5.5008707 3.032453 3.0465034 11.827904 11.74858 10.838698
5.5203014 23.097359 3.8320444 3.5443241 4.0898642 3.6212497 2.5439412 11.733889 11.623028 10.74456
5.5743173 23.418282 3.5662245 4.0885075 2.5599966 3.831838 2.6389438 11.802165 11.600249 10.548378
5.4710145 22.69495 3.2918761 3.9451736 2.4523656 3.8066778 2.2693201 11.9393 11.855376 10.432584
5.7249197 25.10717 3.3525382 4.3149979 3.2367275 5.3139646 2.5816744 12.062877 11.866058 10.517373
5.6029865 23.932976 3.1579223 4.3025592 3.6696865 5.2925377 2.4574798 11.702614 11.719522 10.694965
5.8584265 25.726803 3.591555 5.0028025 4.3743183 6.3872181 3.0561159 11.952428 11.484249 10.689449
5.9031743 26.839358 3.4117665 4.5963428 4.7974775 5.8755164 2.8253733 12.10545 11.305079 10.99087
5.871274 25.566645 3.9526358 4.9525777 4.5955534 6.0483781 3.4112111 12.411365 11.160128 11.127671
5.971686 26.102288 3.6365256 5.9222201 4.2634774 6.5495138 3.6764429 12.391364 11.066566 11.116462
5.8409377 26.194249 3.0926214 4.8296833 3.7115072 6.099581 2.8849802 12.313864 11.045442 11.115979
5.7364744 25.925302 2.6150435 4.366793 2.82037 5.4514289 2.2321838 12.289131 11.219661 11.147242
5.7564899 25.275185 3.3789897 4.483002 2.7279122 5.2027203 2.3538567 12.684248 11.16195 11.369676
5.8534787 27.157326 3.5165098 3.5893769 2.3556605 5.3231652 1.7070055 12.565231 11.069269 11.337457
5.9408552 27.966349 3.3982116 3.9291994 1.8322283 6.180127 1.8538634 12.278692 11.177211 11.039221
5.9991641 28.500275 3.4480936 4.0416007 1.4369922 6.2844053 2.1097089 12.235666 11.132757 10.904201
5.9827547 28.122241 3.6720826 3.99903 1.6442854 6.5053103 2.1950703 12.375314 10.984735 11.141669
5.7242437 24.434905 3.648822 4.6832392 1.821415 6.4501646 2.4028702 12.670431 10.977806 11.410258
5.9013116 26.357569 3.0063195 5.4615893 2.0091238 7.228626 2.3442628 12.493765 11.119713 11.390818
5.9102199 26.680495 3.3358499 4.9143549 1.9055918 6.4412945 2.276014 12.436401 11.018703 11.296939
5.7574386 25.75443 3.5724979 3.8211712 1.1599229 5.4240531 1.9894834 12.410879 10.842471 11.538406
5.7962483 26.429288 3.5017822 3.6654244 1.351938 5.3252517 2.0282575 12.612201 10.893438 11.631667
5.8025098 26.466059 3.5624898 3.6405708 1.133526 5.0789389 1.9460322 12.544642 10.689038 11.643796
5.7641125 25.654408 3.5345151 4.0360697 -0.83109583 5.2108762 1.6905126 12.397222 10.493385 11.696253
5.8072019 25.679442 3.7582386 4.2859131 -1.1772031 4.1938521 2.2160298 12.296673 10.42008 11.579109
5.7001985 24.189016 3.4982895 4.8049581 -0.79453271 5.1362216 2.1827354 12.429957 10.390496 11.673153
5.6941506 24.093688 3.7459033 4.5837599 0.3856992 4.4633959 2.3263501 12.627162 10.503343 11.82833
5.7372955 23.890143 4.118775 4.9076412 0.38805722 5.2566643 2.4772406 12.606965 10.572847 11.676506
5.7428616 23.766824 3.8880982 5.3255366 -0.33675724 5.3218988 2.2539972 12.572964 10.534064 11.764667
5.6499731 23.349011 3.8192146 4.7539703 -0.53788179 5.0455279 2.0044363 12.757771 10.584261 11.688338
5.561088 22.635914 3.2874113 5.0023747 -0.95881516 4.9526458 1.9768975 12.886108 10.648817 11.470577
5.5065659 22.592866 2.7699655 4.9594365 -1.0429502 4.9746672 1.8842364 12.735278 10.699875 11.654034
5.5460253 23.096944 3.142451 4.5190012 -1.1377029 4.83551 1.9918703 12.593307 10.943414 11.675934
5.6481034 23.145496 3.9046837 4.8508926 -0.91586514 5.3258558 2.0990811 12.351415 11.054151 11.919751
5.5866973 22.272242 4.165557 4.7733879 0.18094082 5.5362212 2.2702355 12.209321 11.022481 12.234607
5.6750688 22.935992 4.2668031 5.0036106 0.72144434 6.2570228 2.2604028 12.463617 11.080389 12.412865
5.534307 22.260525 3.8054072 4.5626216 1.2420249 5.5967501 2.1125147 12.276273 10.798486 12.715741
5.4350673 21.62159 3.3869298 4.5314364 0.28258213 5.392389 1.4911895 12.089432 10.737925 12.813536
5.4001425 20.624748 3.7570393 4.7797519 -0.34050458 5.0506345 1.5269124 12.371365 10.573888 13.11618
5.2688943 20.156887 3.1510052 4.4533547 -0.24239841 3.7818288 1.6612474 12.609371 10.459128 13.266976
5.2982505 20.253797 2.7325109 5.0851506 0.97176123 4.4929627 1.8231597 12.327457 10.618473 13.130165
5.4414697 21.984831 2.4606178 5.1641442 1.5740444 3.9075737 1.8170722 12.373628 10.567596 13.222471
5.5707319 23.29693 2.6131294 5.1229945 2.0993935 4.6052431 1.8168365 12.240404 10.428094 13.196731
5.5618536 23.293232 2.6635368 4.9774466 2.0107618 4.729051 2.1105567 11.893503 10.441165 13.520945
5.3824015 21.722018 2.1221208 5.1261065 0.086745541 5.2274385 1.4581085 11.959975 10.242092 13.763089
5.3110156 21.58712 2.1313837 4.4883826 -0.069494245 4.791078 1.0062878 11.779291 10.464336 13.80227
5.3948376 22.671798 1.9091101 4.5233651 -0.11280005 5.0086281 0.89597813 11.614655 10.656549 13.820591
5.5809034 24.867625 1.3844025 4.8944556 0.21411272 5.3612716 0.72590718 11.282652 10.763637 14.08913
5.4622685 23.739255 1.24356 4.8535622 0.13581426 5.7501671 0.53683532 11.3626 10.542723 14.066682
5.6094798 24.636207 1.6172433 5.2128136 -0.097584809 6.1198559 0.69895129 11.287109 10.558667 14.044154
5.4165614 22.021973 1.4818718 5.8352917 0.89764161 6.0173972 1.1757975 11.480403 10.533196 14.164959
5.3831534 20.837979 1.5941418 6.5462204 0.59835853 6.9459971 1.0858389 11.339892 10.397939 14.195947
5.5067567 21.798831 1.9234182 6.6021193 0.76547577 6.8192549 1.2260428 11.145728 10.283724 14.190221
5.6563775 23.811388 2.1471178 6.036101 1.0259294 6.5232685 0.83766579 10.825499 10.273792 14.129418
5.4451604 20.863513 2.3562534 6.4300051 1.5302839 6.1671606 0.75115397 10.651819 10.39427 14.473719
5.4776014 20.980214 2.0579606 6.9659434 0.88467458 7.2533903 0.77699513 10.557993 10.393864 14.704461
5.5242184 21.143401 2.0891642 7.2844237 1.7135288 8.0100956 0.59126903 10.506463 10.30514 14.635687
5.5952383 21.713905 2.0822735 7.5105131 1.6848721 8.6683589 0.54607641 10.848528 10.178865 14.6756
5.5494815 20.976489 2.0002402 7.8200161 1.633579 8.7917235 0.60145161 10.95957 10.169286 14.679937
5.5616629 21.359332 1.9394845 7.6332784 2.0304456 8.7008645 0.85295196 11.170357 10.225827 14.726124
5.6176306 22.10284 1.6565778 7.7983556 1.2753605 9.1860905 0.35574937 11.390344 10.161072 14.54684
5.5537535 21.585125 1.4320902 7.8269629 1.1066814 8.7054995 0.72662158 11.542937 9.9223535 14.301885
5.685951 21.825553 1.3045643 9.1999215 0.33328854 9.2073799 0.16513891 11.603972 10.087952 14.327977
5.6552814 21.351832 1.2558199 9.3745555 0.18161186 9.369701 -0.28214349 11.321008 10.189685 14.154392
5.4788891 20.267569 1.4414745 8.309182 0.50179204 8.4903356 0.32130214 11.529341 10.149143 14.035217
5.5277185 19.960184 1.3683852 9.2271027 0.64182784 8.9620672 0.12199186 11.843215 10.150284 14.183055
5.4735386 19.222626 1.4986842 9.2383144 0.94509332 8.6260342 0.13055625 11.682224 9.9690019 14.513222
5.3622072 17.73294 1.4751636 9.5451626 1.0034253 8.9118294 0.7059144 11.472562 10.038533 14.485551
5.445355 18.117434 1.623667 9.9107902 0.49887445 9.2080383 0.64146653 11.522375 10.063749 14.279329
5.6860226 21.21186 1.3902168 9.728777 -0.0065698438 9.468757 0.24288379 11.447441 10.116017 14.179032
5.8623813 24.200397 0.98055759 9.1865602 -0.98259305 10.097774 -0.30057595 11.343731 10.120143 14.042191
5.918083 25.470443 0.99775786 8.5555058 -0.65092803 10.091138 -0.21514932 11.314568 10.05212 13.954593
5.8949972 25.325354 0.99641734 8.4292203 -0.88232382 9.4248534 -0.36658068 11.581976 9.8702451 14.126698
5.8613678 24.763638 0.89762877 8.6943649 -0.98424992 9.497951 -0.23226015 11.717612 9.890641 14.26287
5.6481169 22.045543 0.96243641 8.893245 -1.1760231 9.1453872 -0.11762093 11.50892 9.8690295 14.350263
5.6562949 21.113025 0.92949571 9.9511513 -0.70449333 9.3463985 -0.11841869 11.328726 9.667841 14.51068
5.8630888 22.122345 1.3011671 10.952298 -1.6109125 11.380566 -0.46094698 11.279572 9.63164 14.614758
6.2211982 24.179749 1.2682256 13.255332 -1.4429027 13.612987 -0.9837265 11.469112 9.5032794 14.627161
6.103517 22.343284 1.427368 13.482269 -2.6977126 13.121697 -2.0073484 11.551854 9.4073514 14.629993
6.0780722 22.571697 1.605872 12.765393 -2.5684628 12.702521 -1.855223 11.524297 9.4185098 14.760376
5.962502 22.143959 1.6757572 11.731714 -2.6991645 12.143141 -1.960977 11.954591 9.7031861 15.143472
6.009522 22.387442 1.8937789 11.833134 -1.2518962 12.704385 -1.2184241 11.925804 9.8718705 15.120328
5.9772771 22.328968 2.3898798 11.008994 -2.0889747 11.983275 -1.5173344 12.044732 9.8293808 15.406575
6.0173394 22.175918 2.3466252 11.68583 -1.9704024 12.264229 -1.1229464 11.867049 9.8196821 15.617449
5.9423929 21.320292 2.8491188 11.142623 -2.5272525 11.183194 -1.8621352 12.255629 9.860394 15.83337
6.0326028 21.286102 2.8880379 12.218157 -2.4442987 11.736303 -1.5296422 11.889453 9.8334262 15.769088
5.9305966 20.423582 2.8051474 11.943247 -1.1943926 10.84089 -1.1560133 11.879312 9.7294878 15.952156
6.0095159 20.791735 2.7764089 12.546138 -0.16231381 11.664774 -0.43255458 11.921255 9.9243447 16.061464
5.7909265 20.23263 2.8046011 10.497598 -0.357924 9.8311891 -0.84974053 11.91449 9.9599653 15.957817
5.9535458 22.198383 3.0892096 10.157115 -0.7803564 10.143081 -0.63922509 12.123401 9.7995729 15.958638
6.017148 23.216349 3.2195704 9.7701505 -0.062229052 9.5036187 -0.39378407 12.141769 10.000866 15.756052
5.7719978 20.664789 2.8143916 9.8367777 -0.090860047 8.255456 -0.13459677 12.071935 10.037904 15.896415
5.7969736 20.94815 2.4936828 10.16307 -0.18970488 8.5723129 0.11111623 12.000448 10.039701 15.729941
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5.4066479 21.398038 4.9991011 2.8347029 -4.8479486 5.206114 -0.50610023 15.86304 15.429738 16.512504
5.441755 21.617797 5.659365 2.3355356 -5.961735 4.6302272 -0.72977775 15.813723 15.712412 16.506809
5.7202175 23.711942 5.9623456 3.0466007 -6.1085248 6.0000527 -0.93289256 15.894001 15.881179 16.527676
5.7368795 23.945329 5.6735024 3.2929547 -5.6060966 6.2106471 -0.74497538 16.061111 15.970952 16.370613
5.6495488 24.006663 4.7468148 3.1639236 -5.1793756 5.6821901 -0.81032624 15.796142 16.145639 16.466949
5.5939342 23.275679 5.271768 2.7446528 -5.7300112 5.1730698 -1.2107349 15.729561 16.249974 16.457102
5.7425848 25.186876 4.9619667 2.8284378 -6.0985173 5.139422 -1.214785 15.989171 16.540401 16.704536
5.6612275 23.352351 5.3497709 3.3473746 -5.8553322 5.4940876 -0.96451436 15.958304 16.378975 16.760569
5.7674324 23.160912 6.4085684 3.693796 -5.7023785 6.3012749 -1.069243 16.158905 16.347021 16.797318
5.5801318 21.143398 6.3609125 3.63356 -6.4210115 5.5621176 -1.2940504 16.349065 16.384412 17.10306
5.5773402 20.783758 6.737318 3.585647 -6.924001 4.9918691 -0.79943774 16.366992 16.51269 17.105981
5.684201 21.749552 6.6669742 3.8936142 -7.2295975 5.6082572 -1.3412819 16.311826 16.57439 17.001747
5.6127015 21.505863 5.5438849 4.4526702 -6.3647761 5.9814202 -1.3661416 16.215903 16.555573 16.956272
5.6401502 22.161029 4.8054549 4.8448102 -5.561779 6.524125 -1.142001 16.474245 16.567552 16.956738
5.7092689 22.328154 4.9481563 5.3194416 -5.4176601 7.1919393 -1.191178 16.5441 16.570397 16.846804
5.797597 23.179548 5.1415325 5.29105 -5.0300181 7.7617632 -1.1169835 16.348087 16.286533 16.907818
5.995093 25.569207 4.9809579 5.3909751 -5.6848147 8.4579815 -0.91909737 16.079028 16.132571 16.795598
5.9348179 25.527175 4.7514497 4.9434381 -5.134042 7.9224742 -0.56446559 16.040463 16.20114 16.913737
5.9027126 23.564506 5.0612072 6.2163037 -4.3982642 8.5537664 -0.029144912 16.008343 16.169362 16.89208
5.9633921 23.802733 4.7747997 6.984513 -4.628952 9.0124952 0.12532294 15.807381 16.16799 16.950541
6.1867908 25.772111 4.2265449 8.277724 -3.8985525 11.288384 0.034973021 15.867016 16.182462 17.033093
6.207372 26.266701 3.943529 8.3212373 -4.0682522 11.23538 -0.047492834 15.870707 16.090301 17.052838
6.2134708 26.976771 3.7741123 7.8563368 -5.2558696 10.464963 -0.27934473 16.279091 16.230659 17.105529
6.1676387 25.542318 4.0500689 8.4473804 -5.0529231 10.530898 -0.28771364 16.36413 16.436549 17.1944
6.2094436 24.843313 4.3163559 9.3975218 -5.8153663 11.438499 -0.84409828 16.404832 16.624877 17.422877
6.0706081 23.058425 3.8150626 9.9787961 -5.0512258 10.996391 -0.75766354 16.448462 16.67916 17.500419
6.0961494 23.714468 3.5115598 9.9370088 -4.663351 11.610344 -0.5784744 16.291852 16.453541 17.557589
6.1178466 24.096564 3.5811377 9.7503446 -5.0841699 11.44511 -1.035818 16.350977 16.295448 17.479614
6.1566006 25.172194 3.8948173 8.8367206 -6.1273547 11.058599 -1.359194 16.354174 16.181997 17.218925
6.237932 26.96754 3.8890813 8.0551741 -5.7983355 10.996231 -1.2130202 16.261553 16.114478 17.099237
6.1922951 26.893723 3.4056062 8.0451901 -5.026978 10.481237 -0.83482516 16.364736 15.988118 17.015587
6.2827852 28.263514 3.5599473 7.6499288 -5.7959286 10.899793 -1.1825891 16.466086 16.11376 17.046831
6.1712954 26.450642 3.5068734 8.1273715 -5.630614 10.804319 -1.2870435 16.556845 16.055189 17.067815
6.138582 25.677619 4.3083519 7.6962184 -6.4851933 10.400633 -1.5485876 16.664784 16.208751 17.070138
6.2340525 27.094719 4.6794998 7.0891912 -7.5124328 10.416896 -1.8840134 16.641283 16.263648 17.112528
6.4079209 26.720461 4.7790682 9.5619204 -8.1291925 12.369812 -2.5733734 16.559331 16.036555 17.147572
6.4300657 27.317916 5.4901453 8.5376842 -9.2470077 12.246962 -2.8855574 16.542536 15.88458 17.098137
6.5517643 28.877671 6.5246122 7.523332 -11.02762 11.899212 -3.5943723 16.680194 15.776602 17.318073
6.4489667 28.585306 5.8623224 7.1415422 -10.250958 11.407539 -3.3205181 16.740221 15.95636 17.270834
6.1780499 25.939612 5.6814589 6.5472299 -9.6741186 9.9427257 -3.0418964 16.616712 15.934624 17.044713
6.1442365 25.218703 5.8851798 6.6477591 -9.3941294 10.202308 -3.0337898 16.783448 16.208261 16.819308
6.2002947 26.436904 5.2649524 6.7417976 -8.9608786 10.794734 -2.8314939 16.753721 16.393427 16.934071
6.1023958 24.753277 5.7449215 6.741036 -8.9394603 10.887318 -3.4654541 16.841151 16.528704 16.967895
6.4706341 27.187763 6.5991071 8.0822352 -10.853767 13.164671 -5.1852157 16.93495 16.719349 17.323208
6.3805346 27.134825 5.7599629 7.8164337 -9.6802387 12.397818 -4.6695043 16.973211 16.803282 17.491511
6.3757136 27.102645 6.7185198 6.8285591 -10.622473 11.379311 -4.8283608 17.23643 16.777418 17.635
6.3879163 28.633074 5.7702175 6.4021839 -9.9519285 11.28733 -4.1748398 17.027704 16.889915 17.715266
6.2612855 27.256754 5.4785084 6.4684339 -9.0888708 11.242858 -4.2694804 17.107341 16.859271 17.63844
6.299312 27.873052 5.3289192 6.4793606 -9.0267711 11.387876 -4.0919645 17.305467 16.911771 17.427675
6.2289237 27.326855 5.4264335 6.0462019 -9.3223078 10.416802 -3.9863206 17.396619 16.901055 17.413319
6.2473459 27.200332 5.8324397 5.9965584 -10.211428 10.338958 -4.299193 17.495537 16.890711 17.347725
6.2766326 26.883091 5.6089996 6.9040261 -10.015189 10.953918 -4.6146601 17.455984 17.035668 17.174964
6.3194426 27.194483 5.6584676 7.0824043 -10.193287 11.542445 -4.8781821 17.660824 17.058122 17.339121
6.345308 28.284305 5.4068998 6.5717287 -9.9723279 11.450394 -4.7371912 17.498544 16.950749 17.202711
6.2452671 27.623267 4.5226046 6.8574901 -8.5053598 11.993833 -4.2989181 17.644952 17.340005 17.030892
6.4935998 31.828498 3.9256257 6.4127151 -8.6018524 12.347081 -3.6300015 17.564825 17.509345 16.988147
6.7395483 34.365637 4.9441239 6.1117506 -10.584344 12.608532 -3.8751643 17.622426 17.442024 16.961517
6.9320731 36.487873 5.2885804 6.2771845 -11.739681 12.645393 -4.3287581 17.764176 17.058877 16.904156
7.0005171 38.403772 5.8303742 4.7730936 -12.658945 10.325362 -3.8374444 18.034783 16.97029 16.977488
6.9507198 39.003952 4.8946178 4.4139355 -11.110956 10.151103 -3.2220506 18.108805 16.6043 17.086064
6.8815841 39.138848 4.0348963 4.1824549 -9.0307892 10.015326 -2.6443438 18.236128 16.640815 17.114922
6.882232 39.971484 3.1577729 4.2358598 -7.8287034 9.7553301 -2.0721431 18.223484 16.509923 17.262761
6.9998358 40.624993 3.8565393 4.516169 -9.7890545 10.180717 -2.6275677 18.281929 16.345226 17.15968
6.8949988 38.871237 3.8169004 4.8528717 -9.4694675 10.339985 -2.6477495 18.492426 16.257672 17.131866
6.8405287 37.572857 3.8047352 5.4152407 -9.4559212 10.777587 -3.0741361 18.379265 16.214 16.926726
6.7982337 36.63002 4.0567185 5.5292428 -9.4754516 10.514292 -2.8668269 18.46395 16.18603 16.984062
6.7120737 35.058323 4.2654944 5.7281157 -9.72569 9.8586513 -2.6187517 18.501364 16.296709 16.917798
6.6009399 33.762693 4.4612998 5.3484142 -9.9751926 8.5961687 -2.0531827 18.611888 16.498793 16.849322
6.6023724 33.948277 4.3554627 5.2875812 -9.8243151 8.7062364 -1.8272355 18.889235 16.505505 16.599137
6.6780857 35.344677 3.7712228 5.480929 -9.1700085 8.7759785 -1.6743704 18.97122 16.458453 16.740592
6.8694391 37.17157 3.8044073 6.2132159 -9.3959083 9.877792 -1.9080998 18.88999 16.491255 16.687531
6.8110994 37.183898 3.0145004 6.1926766 -8.4643654 9.7149739 -1.6899805 18.886352 16.632166 16.585902
6.7368298 36.893925 2.5850605 5.90589 -7.287065 10.138336 -1.4314388 19.083565 16.547704 16.573429
6.681602 37.003865 2.4785083 5.1614322 -7.2524982 8.6298859 -1.4116061 19.160426 16.706189 16.537117
6.7214749 38.227249 2.0876872 4.8632887 -6.486242 8.292037 -1.1085249 19.264285 16.811441 16.569642
6.7906595 39.590566 2.003553 4.5189369 -6.3877652 8.1569468 -0.96990154 19.568939 17.12388 16.439813
6.9825421 42.064261 1.6324333 5.0591996 -5.3460807 8.8261841 -0.67124335 19.879388 17.119246 16.383994
7.1140473 43.847742 1.5186192 5.243308 -5.2887519 9.3080416 -0.67694248 20.107193 17.20352 16.279553
7.1941395 44.987299 1.8067519 4.9615922 -6.3356156 9.7180954 -1.1612817 20.28777 17.125718 16.108976
7.2887783 46.379714 1.5557102 5.1908645 -6.4322837 10.690947 -1.4689741 20.722572 16.994585 15.851479
7.3717223 48.09482 1.3874085 4.8600604 -6.3212069 10.637209 -1.4412978 21.145149 17.10172 15.626257
7.3103292 47.259496 1.3153081 4.8661097 -6.1167747 10.684898 -1.4517047 21.428737 17.11633 15.522888
7.3474083 48.062136 1.2368688 4.6854041 -5.6025782 11.183963 -1.4659443 21.751501 17.021464 15.227136
7.3974278 49.792552 0.91072848 4.018657 -4.0765455 11.022114 -1.0871425 22.192155 16.813026 15.026038
7.517569 52.091339 0.84745921 3.5750462 -4.2468388 10.727176 -1.0474924 22.730902 16.677036 14.980871
7.6892478 54.263113 1.0592439 3.8021738 -5.1057643 11.818169 -1.4872384 23.316002 16.603974 14.850614
7.7872283 56.561426 0.84791834 3.2315808 -4.2529665 10.696077 -1.1478533 23.634655 16.489411 14.936932
7.7547771 56.201611 0.87067007 3.0642868 -4.2366377 10.131149 -0.95264498 24.163744 16.54509 14.977185
8.0531769 61.107193 0.8690226 2.8774426 -4.644315 10.929799 -0.94163247 24.68465 16.571341 14.924763
8.3310719 65.787139 0.74155575 2.8780643 -4.5926971 11.449945 -0.98674983 25.293252 16.500118 14.981323
8.642708 71.198421 0.5590228 2.9389584 -4.1285672 12.599427 -0.92098043 25.76361 16.40755 14.923297
8.8281194 74.787989 0.57383779 2.5738649 -4.6176409 12.215755 -0.92509188 26.434103 16.447768 14.965872
9.0576712 78.737429 0.69514572 2.6088322 -5.6897098 12.978088 -1.1362365 27.012606 16.536097 14.88788
9.2009546 81.167026 0.82443581 2.6661034 -6.6858174 13.205957 -1.3008143 27.626219 16.536581 14.96208
9.2666904 82.050263 0.7734027 3.047885 -6.1976828 14.376645 -1.2400628 28.324969 16.488721 14.813316
9.148695 80.122762 0.87475577 2.701102 -6.3325063 13.21717 -1.2745178 29.145946 16.473304 14.98538
9.001243 77.397716 0.94205086 2.6826087 -6.5634383 12.728307 -1.3523873 29.819452 16.552882 15.018783
9.0777055 78.466989 1.0113835 2.9263656 -6.8428264 13.079194 -1.4744992 30.300781 16.494792 15.048552
9.1009918 79.260722 0.9807463 2.5865839 -6.9312724 12.560048 -1.3522864 30.999146 16.471303 15.124403
9.0922708 79.831399 0.87867232 1.9593164 -5.683661 10.699977 -1.0353506 31.615948 16.294124 15.18771
8.9936285 78.360142 0.78531808 1.7398937 -5.6675013 9.909593 -0.91667657 32.113631 16.251319 15.191646
8.9309778 76.82727 0.73333331 2.2017606 -5.1030576 11.366822 -0.97500449 32.507368 16.223113 15.275399
8.8207322 75.200264 0.62545687 1.9795954 -3.5875432 10.549107 -0.67108507 33.167808 16.17782 15.14988
8.6517106 71.668227 0.74290008 2.4409698 -3.9392699 11.85099 -0.82153294 33.605742 16.23708 15.409707
8.6365567 71.615778 0.6557002 2.318633 -2.5495576 11.358758 -0.63414526 34.331039 16.120944 15.587085
8.4130814 67.865585 0.754676 2.1596775 -1.4350363 10.614042 -0.3239519 35.000501 16.175439 15.699587
8.25002 64.653951 0.759895 2.6489843 -0.047026072 11.681153 -0.13402085 35.45585 16.237441 15.745117
8.075486 62.03899 0.84399975 2.3304839 -1.559837 10.460056 -0.25112144 36.185943 16.115537 16.064387
7.8366364 58.016635 0.96063734 2.4355976 -2.4951475 10.236931 -0.45638427 36.580625 15.876486 16.081116
7.6720504 54.91855 1.2311355 2.7106709 -3.5013889 9.7007273 -0.66989632 37.007795 15.653434 16.295477
7.5459026 51.853751 1.7389758 3.3479194 -5.6826188 10.993022 -1.2532598 37.378257 15.3961 16.447817
7.2539465 47.14327 2.2098583 3.2666111 -5.2847693 10.216356 -1.1334835 37.700742 15.603925 16.685365
6.9312041 42.558067 2.0941643 3.389359 -5.1200095 9.2432158 -1.1926306 37.97708 15.532295 16.728937
6.6532233 38.946916 1.7705815 3.5478824 -4.0065169 7.8359509 -0.83714023 38.405624 15.528978 16.743439
6.4133222 35.120916 1.8588526 4.1509331 -3.0514447 8.3796131 -0.92728331 38.703448 15.549252 17.02516
6.194238 32.712424 1.9939435 3.6622163 -2.9701683 7.2047379 -0.83562437 39.394386 15.666429 17.049729
5.8186585 27.776333 2.3363751 3.744079 -2.9891432 5.6379939 -0.70461591 39.752658 15.579909 16.96213
5.5897628 24.780413 2.8056262 3.6594096 -3.5134633 4.8264986 -0.83946107 40.102769 15.377182 16.947572
5.3769903 22.280115 2.7709055 3.8610039 -3.2364022 5.1813564 -0.89638947 40.62343 15.506131 17.106031
5.1063868 19.312622 2.7094113 4.0531534 -2.8471083 5.2213352 -0.75324965 40.782169 15.678787 17.244642
4.8077716 16.355397 2.5693106 4.1899599 -2.9764819 4.4411865 -0.37353275 41.153908 15.362181 17.131944
4.6501775 13.736158 2.7819846 5.1060086 -2.6188497 4.2731016 -0.30895652 41.43999 15.550215 17.143943
4.4679179 11.9096 3.1313145 4.9213756 -2.2525965 3.2760982 0.024244645 41.952085 15.610097 16.767273
4.3970823 10.284487 3.4378841 5.6119617 -2.8529271 3.0105925 -0.28501613 42.27667 15.387805 16.667092
4.1183382 7.7103211 3.1939304 6.0564583 -2.8656845 1.4859707 -0.61456694 42.340765 15.229562 16.314725
4.0619303 6.9788743 3.1868475 6.3335563 -2.7990968 0.75885865 -0.44694743 42.645174 15.308083 15.966746
3.966833 5.7341201 3.6149267 6.386717 -2.6076681 0.23182741 -0.55240201 42.803996 15.001363 15.941201
3.856119 4.9814639 4.2483123 5.6398778 -2.2386782 -0.13547369 -0.89035526 43.126699 15.153933 15.89549
3.7114748 4.0042689 4.3938101 5.3769663 -1.8867009 -0.58098164 -0.73115634 43.078128 15.143311 16.029522
3.6867902 4.1618237 4.0102813 5.420317 -1.3839677 -0.94227417 -0.42855978 43.320812 15.246681 15.979576
3.8247407 3.7506299 3.8415311 7.0364804 -1.1968819 -1.2946647 0.0095104673 43.246474 15.254632 15.896513
3.7969091 3.6706948 3.7264602 7.0193638 -1.410513 -1.6211384 0.065695724 43.437836 15.168521 15.595894
3.9389477 3.6358719 4.0877764 7.7916611 -1.3246694 -2.3413686 -0.094860157 43.279214 15.353806 15.465847
4.1666861 3.7657753 3.9029422 9.6925552 -1.7091472 -2.6645858 0.34650579 43.360362 15.336299 15.42574
4.2623587 4.4445738 3.4732435 10.249884 -1.3299476 -3.19818 0.30614208 43.755796 15.269714 15.56183
4.4120457 3.8158033 3.6700357 11.980309 -1.5546486 -2.757901 0.51296075 43.639154 15.641714 15.748073
4.4239787 3.2243265 4.0831065 12.264154 -1.5893887 -2.0627321 0.25747441 43.691108 15.342315 15.898168
4.3056135 2.6280527 4.4356932 11.474562 -1.2707147 -1.8263383 0.028806485 43.63839 15.318566 15.950982
4.349789 2.8919037 4.3719925 11.656769 -1.5097124 -1.9948391 0.06144347 43.634788 15.022389 15.690407
4.3584229 2.5260376 4.7064974 11.763315 -1.4326427 -2.1258969 0.58036467 43.669703 15.051132 15.460037
4.4931654 3.070312 4.8135505 12.304673 -1.5549189 -2.1245695 -0.56145055 43.885773 14.796557 15.347812
4.506235 3.6553777 4.612885 12.037891 -1.7868374 -2.1271702 -0.55704196 44.308855 14.646028 15.434641
4.76806 3.5190536 5.3464268 13.868916 -2.4421853 -1.5912198 -0.2360655 44.315508 14.457266 15.563807
4.8223857 3.6610784 5.4198637 14.174462 -2.8064522 -1.3051469 -0.42653793 44.222252 14.398241 15.500107
4.8602836 3.5383663 6.011611 14.07238 -3.1390617 -1.2231969 -0.33733589 44.041646 13.941675 15.540578
4.8402613 3.561673 5.4778139 14.388642 -3.153822 -0.31270493 0.085236932 44.131733 13.924553 15.515988
4.8827383 3.6880053 4.8661009 15.287027 -2.9776139 -0.75910995 0.38846204 44.443177 13.900337 15.349413
5.0135514 3.6606405 5.7817724 15.693285 -3.0567538 -0.36222976 0.52025814 44.435911 13.698528 15.337839
5.0124579 3.6521656 5.7745828 15.697985 -3.0461172 -0.36613542 0.52093553 44.434268 13.698785 15.336717
Loop time of 734.556 on 64 procs for 400001 steps with 43149 atoms
Performance: 2352.449 ns/day, 0.010 hours/ns, 544.548 timesteps/s
99.6% CPU use with 64 MPI tasks x no OpenMP threads
MPI task timing breakdown:
Section | min time | avg time | max time |%varavg| %total
---------------------------------------------------------------
Pair | 0.023708 | 0.79185 | 2.8291 | 113.7 | 0.11
Bond | 0.022931 | 0.049119 | 0.10765 | 10.6 | 0.01
Neigh | 18.159 | 20.016 | 22.121 | 39.2 | 2.72
Comm | 0.48376 | 85.357 | 168.32 | 840.8 | 11.62
Output | 0.20377 | 0.23043 | 0.2857 | 2.8 | 0.03
Modify | 536.61 | 611.99 | 690.61 | 296.2 | 83.31
Other | | 16.12 | | | 2.19
Nlocal: 674.203 ave 2048 max 0 min
Histogram: 32 0 1 13 1 1 0 0 0 16
Nghost: 2113.72 ave 5607 max 0 min
Histogram: 32 0 0 0 2 14 0 0 4 12
Neighs: 0.218750 ave 10 max 0 min
Histogram: 61 1 0 1 0 0 0 0 0 1
Total # of neighbors = 14
Ave neighs/atom = 0.00032445711
Ave special neighs/atom = 0.0014368815
Neighbor list builds = 7140
Dangerous builds = 0
LB equilibriumDist time: 137.365442
LB update time: 54.652305
LB PCalc time: 105.068066
LB fluidForce time: 237.915672
LB CorrectU time: 50.912956
Total wall time: 0:12:14

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