148 lines
5.6 KiB
Groff
148 lines
5.6 KiB
Groff
LAMMPS (1 Feb 2014)
|
|
# Pour granular particles into chute container, then induce flow
|
|
|
|
atom_style sphere
|
|
boundary p p fm
|
|
newton off
|
|
communicate single vel yes
|
|
|
|
region reg block -10 10 -10 10 -0.5 16 units box
|
|
create_box 1 reg
|
|
Created orthogonal box = (-10 -10 -0.5) to (10 10 16)
|
|
1 by 1 by 1 MPI processor grid
|
|
|
|
neighbor 0.2 bin
|
|
neigh_modify delay 0
|
|
|
|
# IMPORTANT NOTE: these values of stiffness (2000) and timestep (0.001)
|
|
# are used in this example file to produce a quick simulation and movie.
|
|
# More appropriate values for realistic simulations would be
|
|
# k = 2.0e5 and dt = 0.0001, as in bench/in.chute.
|
|
|
|
pair_style gran/hooke/history 2000.0 NULL 50.0 NULL 0.5 0
|
|
pair_coeff * *
|
|
|
|
timestep 0.001
|
|
|
|
fix 1 all nve/sphere
|
|
fix 2 all gravity 1.0 spherical 0.0 -180.0
|
|
fix zlower all wall/gran 2000.0 NULL 50.0 NULL 0.5 0 zplane 0.0 2000.0
|
|
|
|
region slab block -9.0 9.0 -9.0 9.0 10.0 15.0 units box
|
|
fix ins all pour 3000 1 300719 vol 0.13 50 region slab
|
|
Particle insertion: 402 every 3162 steps, 3000 by step 22135
|
|
|
|
compute 1 all erotate/sphere
|
|
thermo_style custom step atoms ke c_1 vol
|
|
thermo 1000
|
|
thermo_modify lost ignore norm no
|
|
compute_modify thermo_temp dynamic yes
|
|
|
|
#dump id all atom 1000 dump.pour
|
|
|
|
#dump 2 all image 1000 image.*.jpg type type # axes yes 0.8 0.02 view 80 -30
|
|
#dump_modify 2 pad 5
|
|
|
|
#dump 3 all movie 1000 movie.mpg type type # axes yes 0.8 0.02 view 80 -30
|
|
#dump_modify 3 pad 5
|
|
|
|
run 25000
|
|
Memory usage per processor = 8.27911 Mbytes
|
|
Step Atoms KinEng 1 Volume
|
|
0 0 -0 0 6600
|
|
1000 402 768.04606 0 6600
|
|
2000 402 1407.1714 0 6600
|
|
3000 402 1373.819 15.59952 6600
|
|
4000 804 1737.1399 39.311164 6600
|
|
5000 804 1571.3184 67.501382 6600
|
|
6000 804 1318.6439 77.636174 6600
|
|
7000 1206 1522.1986 68.863683 6600
|
|
8000 1206 1387.2223 64.067846 6600
|
|
9000 1206 1265.901 51.727094 6600
|
|
10000 1608 1460.2854 48.630285 6600
|
|
11000 1608 1310.6204 52.851955 6600
|
|
12000 1608 1128.6198 46.139167 6600
|
|
13000 2010 1178.8622 50.202317 6600
|
|
14000 2010 1187.0109 39.476651 6600
|
|
15000 2010 989.72713 38.740987 6600
|
|
16000 2412 1120.2349 40.342828 6600
|
|
17000 2412 1075.0554 39.589605 6600
|
|
18000 2412 855.00318 40.858609 6600
|
|
19000 2814 950.88458 41.511679 6600
|
|
20000 2814 923.42023 36.068246 6600
|
|
21000 2814 794.06955 41.150212 6600
|
|
22000 2814 548.02348 35.370804 6600
|
|
23000 3000 463.81576 37.573817 6600
|
|
24000 3000 336.43523 25.743644 6600
|
|
25000 3000 234.89941 20.298489 6600
|
|
Loop time of 9.30611 on 1 procs for 25000 steps with 3000 atoms
|
|
|
|
Pair time (%) = 5.33047 (57.2792)
|
|
Neigh time (%) = 1.05786 (11.3674)
|
|
Comm time (%) = 0.251292 (2.70029)
|
|
Outpt time (%) = 0.000475883 (0.00511366)
|
|
Other time (%) = 2.66602 (28.648)
|
|
|
|
Nlocal: 3000 ave 3000 max 3000 min
|
|
Histogram: 1 0 0 0 0 0 0 0 0 0
|
|
Nghost: 671 ave 671 max 671 min
|
|
Histogram: 1 0 0 0 0 0 0 0 0 0
|
|
Neighs: 13616 ave 13616 max 13616 min
|
|
Histogram: 1 0 0 0 0 0 0 0 0 0
|
|
|
|
Total # of neighbors = 13616
|
|
Ave neighs/atom = 4.53867
|
|
Neighbor list builds = 1149
|
|
Dangerous builds = 0
|
|
|
|
unfix ins
|
|
fix 2 all gravity 1.0 chute 26.0
|
|
run 25000
|
|
Memory usage per processor = 9.07965 Mbytes
|
|
Step Atoms KinEng 1 Volume
|
|
25000 3000 234.89941 20.298489 6600
|
|
26000 3000 82.315315 21.537116 6600
|
|
27000 3000 108.89519 11.940364 6600
|
|
28000 3000 200.16687 11.301946 6600
|
|
29000 3000 349.26838 15.094407 6600
|
|
30000 3000 569.81999 18.792925 6600
|
|
31000 3000 898.94346 28.160958 6600
|
|
32000 3000 1240.4814 33.875237 6600
|
|
33000 3000 1731.5017 41.915333 6600
|
|
34000 3000 2295.7732 48.265714 6600
|
|
35000 3000 2886.4882 61.48829 6600
|
|
36000 3000 3662.1785 79.477977 6600
|
|
37000 3000 4508.9506 87.503245 6600
|
|
38000 3000 5487.5698 105.18573 6600
|
|
39000 3000 6502.5504 107.5985 6600
|
|
40000 3000 7472.1021 126.10799 6600
|
|
41000 3000 8747.8718 152.09945 6600
|
|
42000 3000 10083.088 151.89644 6600
|
|
43000 3000 11433.111 170.87026 6600
|
|
44000 3000 12876.825 194.58992 6600
|
|
45000 3000 14274.884 189.94299 6600
|
|
46000 3000 15664.174 225.06085 6600
|
|
47000 3000 17213.88 222.67736 6600
|
|
48000 3000 18826.294 240.96943 6600
|
|
49000 3000 20558.693 264.45506 6600
|
|
50000 3000 22270.716 276.57672 6600
|
|
Loop time of 18.1762 on 1 procs for 25000 steps with 3000 atoms
|
|
|
|
Pair time (%) = 11.5992 (63.8153)
|
|
Neigh time (%) = 1.71333 (9.42624)
|
|
Comm time (%) = 0.540144 (2.97171)
|
|
Outpt time (%) = 0.000629663 (0.00346421)
|
|
Other time (%) = 4.32291 (23.7833)
|
|
|
|
Nlocal: 3000 ave 3000 max 3000 min
|
|
Histogram: 1 0 0 0 0 0 0 0 0 0
|
|
Nghost: 760 ave 760 max 760 min
|
|
Histogram: 1 0 0 0 0 0 0 0 0 0
|
|
Neighs: 14151 ave 14151 max 14151 min
|
|
Histogram: 1 0 0 0 0 0 0 0 0 0
|
|
|
|
Total # of neighbors = 14151
|
|
Ave neighs/atom = 4.717
|
|
Neighbor list builds = 873
|
|
Dangerous builds = 0
|