forked from lijiext/lammps
141 lines
5.4 KiB
Groff
141 lines
5.4 KiB
Groff
LAMMPS (15 Jan 2010)
|
|
# Pour granular particles into chute container, then induce flow
|
|
|
|
atom_style granular
|
|
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)
|
|
2 by 2 by 1 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
|
|
run 25000
|
|
Memory usage per processor = 9.02398 Mbytes
|
|
Step Atoms KinEng 1 Volume
|
|
0 0 -0 0 6600
|
|
1000 402 779.98578 0 6600
|
|
2000 402 1424.4252 0 6600
|
|
3000 402 1425.0863 12.9927 6600
|
|
4000 804 1724.8627 47.36161 6600
|
|
5000 804 1599.9516 63.808734 6600
|
|
6000 804 1359.1774 63.495338 6600
|
|
7000 1206 1532.7896 68.602762 6600
|
|
8000 1206 1403.019 62.696462 6600
|
|
9000 1206 1246.5766 52.235655 6600
|
|
10000 1608 1384.2206 51.017669 6600
|
|
11000 1608 1247.6415 50.760042 6600
|
|
12000 1608 1195.7464 41.478899 6600
|
|
13000 2010 1319.9158 53.65564 6600
|
|
14000 2010 1195.3567 44.039046 6600
|
|
15000 2010 978.10764 39.976633 6600
|
|
16000 2412 1050.2028 45.306777 6600
|
|
17000 2412 1042.2556 39.814723 6600
|
|
18000 2412 894.58742 40.161025 6600
|
|
19000 2814 1009.3277 35.382235 6600
|
|
20000 2814 959.77476 43.212143 6600
|
|
21000 2814 757.47849 39.534175 6600
|
|
22000 2814 516.06689 40.398841 6600
|
|
23000 3000 425.8695 34.108574 6600
|
|
24000 3000 364.2896 21.08092 6600
|
|
25000 3000 233.88996 22.425122 6600
|
|
Loop time of 11.8692 on 4 procs for 25000 steps with 3000 atoms
|
|
|
|
Pair time (%) = 2.89043 (24.3523)
|
|
Neigh time (%) = 0.429167 (3.6158)
|
|
Comm time (%) = 4.96078 (41.7952)
|
|
Outpt time (%) = 0.0948666 (0.799264)
|
|
Other time (%) = 3.494 (29.4374)
|
|
|
|
Nlocal: 750 ave 756 max 739 min
|
|
Histogram: 1 0 0 0 0 1 0 0 0 2
|
|
Nghost: 393.25 ave 396 max 391 min
|
|
Histogram: 1 0 1 0 0 0 1 0 0 1
|
|
Neighs: 3579.5 ave 3599 max 3555 min
|
|
Histogram: 1 0 0 1 0 0 0 0 1 1
|
|
|
|
Total # of neighbors = 14318
|
|
Ave neighs/atom = 4.77267
|
|
Neighbor list builds = 1152
|
|
Dangerous builds = 0
|
|
|
|
unfix ins
|
|
fix 2 all gravity 1.0 chute 26.0
|
|
run 25000
|
|
Memory usage per processor = 9.68015 Mbytes
|
|
Step Atoms KinEng 1 Volume
|
|
25000 3000 233.88996 22.425122 6600
|
|
26000 3000 95.798714 17.862426 6600
|
|
27000 3000 89.20664 12.04109 6600
|
|
28000 3000 153.95767 10.639392 6600
|
|
29000 3000 259.61171 11.359565 6600
|
|
30000 3000 405.29433 16.92367 6600
|
|
31000 3000 593.74006 20.533913 6600
|
|
32000 3000 849.78176 26.221939 6600
|
|
33000 3000 1207.1697 29.651312 6600
|
|
34000 3000 1640.0393 44.321538 6600
|
|
35000 3000 2184.3996 50.654217 6600
|
|
36000 3000 2748.733 57.776259 6600
|
|
37000 3000 3431.8372 72.462448 6600
|
|
38000 3000 4208.2247 81.621985 6600
|
|
39000 3000 5037.035 87.875437 6600
|
|
40000 3000 5968.7679 102.80889 6600
|
|
41000 3000 6988.042 127.50415 6600
|
|
42000 3000 8046.5759 128.6489 6600
|
|
43000 3000 9218.0921 138.30481 6600
|
|
44000 3000 10406.603 149.42698 6600
|
|
45000 3000 11720.813 177.18618 6600
|
|
46000 3000 13072.246 188.23186 6600
|
|
47000 3000 14497.861 194.91929 6600
|
|
48000 3000 16005.838 231.43677 6600
|
|
49000 3000 17686.896 235.61473 6600
|
|
50000 3000 19398.978 258.59144 6600
|
|
Loop time of 17.7707 on 4 procs for 25000 steps with 3000 atoms
|
|
|
|
Pair time (%) = 6.27581 (35.3155)
|
|
Neigh time (%) = 0.622012 (3.50021)
|
|
Comm time (%) = 6.27691 (35.3217)
|
|
Outpt time (%) = 0.142299 (0.800749)
|
|
Other time (%) = 4.45368 (25.0619)
|
|
|
|
Nlocal: 750 ave 757 max 743 min
|
|
Histogram: 1 0 0 0 1 1 0 0 0 1
|
|
Nghost: 400.5 ave 408 max 393 min
|
|
Histogram: 1 1 0 0 0 0 0 0 1 1
|
|
Neighs: 3755 ave 3821 max 3701 min
|
|
Histogram: 1 1 0 0 0 0 1 0 0 1
|
|
|
|
Total # of neighbors = 15020
|
|
Ave neighs/atom = 5.00667
|
|
Neighbor list builds = 811
|
|
Dangerous builds = 0
|