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git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@5852 f3b2605a-c512-4ea7-a41b-209d697bcdaa

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sjplimp
2011-03-26 23:02:38 +00:00
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LAMMPS (27 Mar 2011)
# 2-d LJ flow simulation
dimension 2
boundary p s p
atom_style atomic
neighbor 0.3 bin
neigh_modify delay 5
# create geometry
lattice hex 0.7
Lattice spacing in x,y,z = 1.28436 2.22457 1.28436
region box block 0 20 0 10 -0.25 0.25
create_box 3 box
Created orthogonal box = (0 0 -0.321089) to (25.6871 22.2457 0.321089)
1 by 1 by 1 processor grid
create_atoms 1 box
Created 420 atoms
mass 1 1.0
mass 2 1.0
mass 3 1.0
# LJ potentials
pair_style lj/cut 1.12246
pair_coeff * * 1.0 1.0 1.12246
# define groups
region 1 block INF INF INF 1.25 INF INF
group lower region 1
60 atoms in group lower
region 2 block INF INF 8.75 INF INF INF
group upper region 2
60 atoms in group upper
group boundary union lower upper
120 atoms in group boundary
group flow subtract all boundary
300 atoms in group flow
set group lower type 2
60 settings made for type
set group upper type 3
60 settings made for type
# initial velocities
compute mobile flow temp
velocity flow create 1.0 482748 temp mobile
fix 1 all nve
fix 2 flow temp/rescale 200 1.0 1.0 0.02 1.0
fix_modify 2 temp mobile
# Couette flow
velocity lower set 0.0 0.0 0.0
velocity upper set 3.0 0.0 0.0
fix 3 boundary setforce 0.0 0.0 0.0
fix 4 all enforce2d
# Poisseuille flow
#velocity boundary set 0.0 0.0 0.0
#fix 3 lower setforce 0.0 0.0 0.0
#fix 4 upper setforce 0.0 NULL 0.0
#fix 5 upper aveforce 0.0 -1.0 0.0
#fix 6 flow addforce 0.5 0.0 0.0
#fix 7 all enforce2d
# Run
timestep 0.003
thermo 500
thermo_modify temp mobile
WARNING: Temperature for thermo pressure is not for group all
dump 1 all atom 50 dump.flow
run 10000
Memory usage per processor = 2.05834 Mbytes
Step Temp E_pair E_mol TotEng Press Volume
0 1 0 0 0.71190476 0.5232453 571.43371
500 1.0644427 -0.31382888 0 0.44395296 3.0018809 571.43371
1000 1 -0.42965445 0 0.28225032 2.9617821 571.43371
1500 1.0739874 -0.41189772 0 0.35267901 2.5626845 571.43371
2000 1 -0.40814279 0 0.30376197 2.923516 571.43371
2500 1.1930756 -0.38494744 0 0.46440874 2.8344861 571.43371
3000 1 -0.45104936 0 0.2608554 2.6581476 571.43371
3500 1.1157229 -0.42511668 0 0.36917176 2.548283 571.43371
4000 0.99847156 -0.38248232 0 0.32833434 2.7743789 571.43371
4500 0.99986482 -0.40537662 0 0.30643191 2.5662059 571.43371
5000 0.98699088 -0.42972933 0 0.27291418 2.8700314 571.43371
5500 0.99529887 -0.4099323 0 0.2986257 2.6108218 571.43371
6000 1 -0.37315745 0 0.33874731 2.6162108 571.43371
6500 1.0875953 -0.43070589 0 0.34355841 2.4212644 571.43371
7000 1 -0.37770812 0 0.33419664 2.3471175 571.43371
7500 1.0225134 -0.39148836 0 0.33644382 2.3372521 571.43371
8000 1 -0.4303298 0 0.28157496 2.6649863 571.43371
8500 1.0059281 -0.47968607 0 0.23643894 2.2977497 571.43371
9000 1 -0.47706517 0 0.23483959 2.3965332 571.43371
9500 1.034152 -0.43908184 0 0.29713592 2.0674205 571.43371
10000 1 -0.42405289 0 0.28785187 2.0333283 571.43371
Loop time of 0.586487 on 1 procs for 10000 steps with 420 atoms
Pair time (%) = 0.211832 (36.1187)
Neigh time (%) = 0.0697327 (11.8899)
Comm time (%) = 0.0170028 (2.8991)
Outpt time (%) = 0.128883 (21.9754)
Other time (%) = 0.159037 (27.1169)
Nlocal: 420 ave 420 max 420 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Nghost: 50 ave 50 max 50 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Neighs: 955 ave 955 max 955 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Total # of neighbors = 955
Ave neighs/atom = 2.27381
Neighbor list builds = 992
Dangerous builds = 0

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LAMMPS (27 Mar 2011)
# 2-d LJ flow simulation
dimension 2
boundary p s p
atom_style atomic
neighbor 0.3 bin
neigh_modify delay 5
# create geometry
lattice hex 0.7
Lattice spacing in x,y,z = 1.28436 2.22457 1.28436
region box block 0 20 0 10 -0.25 0.25
create_box 3 box
Created orthogonal box = (0 0 -0.321089) to (25.6871 22.2457 0.321089)
2 by 2 by 1 processor grid
create_atoms 1 box
Created 420 atoms
mass 1 1.0
mass 2 1.0
mass 3 1.0
# LJ potentials
pair_style lj/cut 1.12246
pair_coeff * * 1.0 1.0 1.12246
# define groups
region 1 block INF INF INF 1.25 INF INF
group lower region 1
60 atoms in group lower
region 2 block INF INF 8.75 INF INF INF
group upper region 2
60 atoms in group upper
group boundary union lower upper
120 atoms in group boundary
group flow subtract all boundary
300 atoms in group flow
set group lower type 2
60 settings made for type
set group upper type 3
60 settings made for type
# initial velocities
compute mobile flow temp
velocity flow create 1.0 482748 temp mobile
fix 1 all nve
fix 2 flow temp/rescale 200 1.0 1.0 0.02 1.0
fix_modify 2 temp mobile
# Couette flow
velocity lower set 0.0 0.0 0.0
velocity upper set 3.0 0.0 0.0
fix 3 boundary setforce 0.0 0.0 0.0
fix 4 all enforce2d
# Poisseuille flow
#velocity boundary set 0.0 0.0 0.0
#fix 3 lower setforce 0.0 0.0 0.0
#fix 4 upper setforce 0.0 NULL 0.0
#fix 5 upper aveforce 0.0 -1.0 0.0
#fix 6 flow addforce 0.5 0.0 0.0
#fix 7 all enforce2d
# Run
timestep 0.003
thermo 500
thermo_modify temp mobile
WARNING: Temperature for thermo pressure is not for group all
dump 1 all atom 50 dump.flow
run 10000
Memory usage per processor = 2.06205 Mbytes
Step Temp E_pair E_mol TotEng Press Volume
0 1 0 0 0.71190476 0.5232453 571.43371
500 1.0951876 -0.33403931 0 0.44562996 3.2508527 571.43371
1000 1 -0.3731019 0 0.33880286 2.856717 571.43371
1500 1.0366879 -0.36031105 0 0.37771198 3.0202123 571.43371
2000 1 -0.41052955 0 0.30137522 2.8657413 571.43371
2500 1.1228407 -0.37042187 0 0.4289338 2.945087 571.43371
3000 1 -0.38445437 0 0.32745039 2.5940132 571.43371
3500 0.98347805 -0.45261096 0 0.24753175 2.7993099 571.43371
4000 1 -0.4065517 0 0.30535307 2.6210066 571.43371
4500 1.1209102 -0.40962998 0 0.38835132 2.4000886 571.43371
5000 1 -0.41496008 0 0.29694469 2.4655161 571.43371
5500 0.97933303 -0.39271136 0 0.30448049 2.7152128 571.43371
6000 1 -0.3939977 0 0.31790706 2.4334363 571.43371
6500 1.0519775 -0.50040975 0 0.24849803 2.5037073 571.43371
7000 1 -0.42318431 0 0.28872046 2.467848 571.43371
7500 1.1143879 -0.41498175 0 0.37835632 2.4540473 571.43371
8000 1 -0.46010124 0 0.25180353 2.5558114 571.43371
8500 1.0240867 -0.45394562 0 0.27510657 2.4271829 571.43371
9000 1 -0.4381772 0 0.27372756 2.4112541 571.43371
9500 1.0233668 -0.40460424 0 0.32393546 2.4071091 571.43371
10000 1 -0.4130336 0 0.29887116 2.3859891 571.43371
Loop time of 0.41448 on 4 procs for 10000 steps with 420 atoms
Pair time (%) = 0.0529404 (12.7727)
Neigh time (%) = 0.0177063 (4.27193)
Comm time (%) = 0.159481 (38.4773)
Outpt time (%) = 0.0909385 (21.9404)
Other time (%) = 0.0934139 (22.5376)
Nlocal: 105 ave 113 max 93 min
Histogram: 1 0 0 0 1 0 0 0 0 2
Nghost: 41.5 ave 48 max 34 min
Histogram: 1 0 0 0 0 1 1 0 0 1
Neighs: 235.25 ave 295 max 177 min
Histogram: 1 1 0 0 0 0 0 0 1 1
Total # of neighbors = 941
Ave neighs/atom = 2.24048
Neighbor list builds = 964
Dangerous builds = 0

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LAMMPS (27 Mar 2011)
# 2-d LJ flow simulation
dimension 2
boundary p s p
atom_style atomic
neighbor 0.3 bin
neigh_modify delay 5
# create geometry
lattice hex 0.7
Lattice spacing in x,y,z = 1.28436 2.22457 1.28436
region box block 0 20 0 10 -0.25 0.25
create_box 3 box
Created orthogonal box = (0 0 -0.321089) to (25.6871 22.2457 0.321089)
1 by 1 by 1 processor grid
create_atoms 1 box
Created 420 atoms
mass 1 1.0
mass 2 1.0
mass 3 1.0
# LJ potentials
pair_style lj/cut 1.12246
pair_coeff * * 1.0 1.0 1.12246
# define groups
region 1 block INF INF INF 1.25 INF INF
group lower region 1
60 atoms in group lower
region 2 block INF INF 8.75 INF INF INF
group upper region 2
60 atoms in group upper
group boundary union lower upper
120 atoms in group boundary
group flow subtract all boundary
300 atoms in group flow
set group lower type 2
60 settings made for type
set group upper type 3
60 settings made for type
# initial velocities
compute mobile flow temp
velocity flow create 1.0 482748 temp mobile
fix 1 all nve
fix 2 flow temp/rescale 200 1.0 1.0 0.02 1.0
fix_modify 2 temp mobile
# Couette flow
#velocity lower set 0.0 0.0 0.0
#velocity upper set 3.0 0.0 0.0
#fix 3 boundary setforce 0.0 0.0 0.0
#fix 4 all enforce2d
# Poisseuille flow
velocity boundary set 0.0 0.0 0.0
fix 3 lower setforce 0.0 0.0 0.0
fix 4 upper setforce 0.0 NULL 0.0
fix 5 upper aveforce 0.0 -1.0 0.0
fix 6 flow addforce 0.5 0.0 0.0
fix 7 all enforce2d
# Run
timestep 0.003
thermo 500
thermo_modify temp mobile
WARNING: Temperature for thermo pressure is not for group all
dump 1 all atom 25 dump.flow
run 10000
Memory usage per processor = 2.05834 Mbytes
Step Temp E_pair E_mol TotEng Press Volume
0 1 0 0 0.71190476 0.5232453 571.43371
500 1.0990751 -0.36396768 0 0.41846911 2.5229954 575.44891
1000 1 -0.34609791 0 0.36580685 1.9739861 584.56264
1500 1.2112861 -0.39062708 0 0.47169327 1.5221639 587.13863
2000 1 -0.39956949 0 0.31233527 1.2499009 582.89761
2500 1.2236323 -0.40128446 0 0.46982521 1.4279626 569.92814
3000 1 -0.48849341 0 0.22341135 1.5094342 553.53722
3500 1.2404531 -0.63017461 0 0.25290984 1.7684919 535.11692
4000 1 -0.71551408 0 -0.0036093194 2.2079801 516.62236
4500 1.2253142 -0.76279403 0 0.10951296 2.6160527 503.09551
5000 1 -0.79031676 0 -0.078411998 3.0921313 499.00007
5500 1.2025712 -0.74032174 0 0.11579442 2.5892112 502.06255
6000 1 -0.6581062 0 0.053798563 2.0984473 510.32132
6500 1.2126636 -0.65632165 0 0.20697931 2.0771501 515.46227
7000 1 -0.68607157 0 0.02583319 1.9548014 518.03757
7500 1.2318514 -0.64168507 0 0.23527579 1.8621166 515.41686
8000 1 -0.69622159 0 0.015683171 2.1564483 508.61671
8500 1.2204376 -0.74071986 0 0.12811549 2.3967887 501.80266
9000 1 -0.79193368 0 -0.080028922 2.4413256 499.77059
9500 1.2151255 -0.75195108 0 0.11310255 2.4315907 500.33116
10000 1 -0.76066018 0 -0.048755416 2.4113886 502.50751
Loop time of 0.765119 on 1 procs for 10000 steps with 420 atoms
Pair time (%) = 0.230286 (30.0981)
Neigh time (%) = 0.0396361 (5.18039)
Comm time (%) = 0.0152719 (1.99602)
Outpt time (%) = 0.258458 (33.7801)
Other time (%) = 0.221467 (28.9454)
Nlocal: 420 ave 420 max 420 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Nghost: 50 ave 50 max 50 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Neighs: 1124 ave 1124 max 1124 min
Histogram: 1 0 0 0 0 0 0 0 0 0
Total # of neighbors = 1124
Ave neighs/atom = 2.67619
Neighbor list builds = 562
Dangerous builds = 0

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LAMMPS (27 Mar 2011)
# 2-d LJ flow simulation
dimension 2
boundary p s p
atom_style atomic
neighbor 0.3 bin
neigh_modify delay 5
# create geometry
lattice hex 0.7
Lattice spacing in x,y,z = 1.28436 2.22457 1.28436
region box block 0 20 0 10 -0.25 0.25
create_box 3 box
Created orthogonal box = (0 0 -0.321089) to (25.6871 22.2457 0.321089)
2 by 2 by 1 processor grid
create_atoms 1 box
Created 420 atoms
mass 1 1.0
mass 2 1.0
mass 3 1.0
# LJ potentials
pair_style lj/cut 1.12246
pair_coeff * * 1.0 1.0 1.12246
# define groups
region 1 block INF INF INF 1.25 INF INF
group lower region 1
60 atoms in group lower
region 2 block INF INF 8.75 INF INF INF
group upper region 2
60 atoms in group upper
group boundary union lower upper
120 atoms in group boundary
group flow subtract all boundary
300 atoms in group flow
set group lower type 2
60 settings made for type
set group upper type 3
60 settings made for type
# initial velocities
compute mobile flow temp
velocity flow create 1.0 482748 temp mobile
fix 1 all nve
fix 2 flow temp/rescale 200 1.0 1.0 0.02 1.0
fix_modify 2 temp mobile
# Couette flow
#velocity lower set 0.0 0.0 0.0
#velocity upper set 3.0 0.0 0.0
#fix 3 boundary setforce 0.0 0.0 0.0
#fix 4 all enforce2d
# Poisseuille flow
velocity boundary set 0.0 0.0 0.0
fix 3 lower setforce 0.0 0.0 0.0
fix 4 upper setforce 0.0 NULL 0.0
fix 5 upper aveforce 0.0 -1.0 0.0
fix 6 flow addforce 0.5 0.0 0.0
fix 7 all enforce2d
# Run
timestep 0.003
thermo 500
thermo_modify temp mobile
WARNING: Temperature for thermo pressure is not for group all
dump 1 all atom 25 dump.flow
run 10000
Memory usage per processor = 2.06205 Mbytes
Step Temp E_pair E_mol TotEng Press Volume
0 1 0 0 0.71190476 0.5232453 571.43371
500 1.0758737 -0.36090417 0 0.40501541 2.782759 574.95676
1000 1 -0.35701441 0 0.35489035 2.0579148 585.60492
1500 1.2368663 -0.37709732 0 0.50343367 1.4868643 587.08385
2000 1 -0.39362939 0 0.31827537 1.4238684 578.83266
2500 1.2272957 -0.423819 0 0.44989866 1.4547395 570.04942
3000 1 -0.49143403 0 0.22047073 1.5348969 554.87718
3500 1.2444908 -0.597618 0 0.2883409 1.8757604 536.90691
4000 1 -0.70133089 0 0.010573874 2.1399937 521.35928
4500 1.2212572 -0.74525028 0 0.12416857 2.7605953 507.52559
5000 1 -0.77887442 0 -0.066969662 2.9849792 501.10169
5500 1.2118683 -0.76479769 0 0.097937148 2.7555194 505.25255
6000 1 -0.64166654 0 0.070238224 2.4653816 510.17292
6500 1.2230732 -0.66072614 0 0.20998549 2.0855543 517.97007
7000 1 -0.61750407 0 0.094400687 1.9316563 520.97755
7500 1.2289276 -0.68159213 0 0.19328728 2.0003789 520.18556
8000 1 -0.69786226 0 0.014042499 2.1485637 517.24977
8500 1.2206044 -0.75028089 0 0.11867321 2.3924356 513.28362
9000 1 -0.75191705 0 -0.040012285 2.521768 509.91505
9500 1.2149548 -0.71491732 0 0.15001477 2.3827722 508.86228
10000 1 -0.71239141 0 -0.00048664424 2.3193862 508.75244
Loop time of 0.623361 on 4 procs for 10000 steps with 420 atoms
Pair time (%) = 0.0576158 (9.24276)
Neigh time (%) = 0.0104457 (1.6757)
Comm time (%) = 0.179585 (28.8092)
Outpt time (%) = 0.173133 (27.7741)
Other time (%) = 0.202582 (32.4983)
Nlocal: 105 ave 107 max 104 min
Histogram: 2 0 0 1 0 0 0 0 0 1
Nghost: 43.5 ave 45 max 42 min
Histogram: 1 0 0 1 0 0 1 0 0 1
Neighs: 279.5 ave 296 max 265 min
Histogram: 2 0 0 0 0 0 0 1 0 1
Total # of neighbors = 1118
Ave neighs/atom = 2.6619
Neighbor list builds = 565
Dangerous builds = 0