mirror of https://github.com/lammps/lammps.git
141 lines
5.4 KiB
Groff
141 lines
5.4 KiB
Groff
LAMMPS (10 Sep 2010)
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# Pour granular particles into chute container, then induce flow
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atom_style granular
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boundary p p fm
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newton off
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communicate single vel yes
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region reg block -10 10 -10 10 -0.5 16 units box
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create_box 1 reg
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Created orthogonal box = (-10 -10 -0.5) to (10 10 16)
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2 by 2 by 1 processor grid
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neighbor 0.2 bin
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neigh_modify delay 0
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# IMPORTANT NOTE: these values of stiffness (2000) and timestep (0.001)
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# are used in this example file to produce a quick simulation and movie.
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# More appropriate values for realistic simulations would be
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# k = 2.0e5 and dt = 0.0001, as in bench/in.chute.
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pair_style gran/hooke/history 2000.0 NULL 50.0 NULL 0.5 0
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pair_coeff * *
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timestep 0.001
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fix 1 all nve/sphere
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fix 2 all gravity 1.0 spherical 0.0 -180.0
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fix zlower all wall/gran 2000.0 NULL 50.0 NULL 0.5 0 zplane 0.0 2000.0
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region slab block -9.0 9.0 -9.0 9.0 10.0 15.0 units box
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fix ins all pour 3000 1 300719 vol 0.13 50 region slab
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Particle insertion: 402 every 3162 steps, 3000 by step 22135
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compute 1 all erotate/sphere
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thermo_style custom step atoms ke c_1 vol
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thermo 1000
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thermo_modify lost ignore norm no
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compute_modify thermo_temp dynamic yes
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dump id all atom 1000 dump.pour
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run 25000
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Memory usage per processor = 9.02398 Mbytes
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Step Atoms KinEng 1 Volume
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0 0 -0 0 6600
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1000 402 779.98578 0 6600
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2000 402 1424.4252 0 6600
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3000 402 1425.0863 12.9927 6600
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4000 804 1724.8627 47.36161 6600
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5000 804 1599.9516 63.808734 6600
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6000 804 1359.1774 63.495338 6600
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7000 1206 1532.7896 68.602762 6600
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8000 1206 1403.019 62.696462 6600
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9000 1206 1246.5766 52.235655 6600
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10000 1608 1384.2206 51.017669 6600
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11000 1608 1247.6415 50.760042 6600
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12000 1608 1195.7464 41.478899 6600
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13000 2010 1319.9158 53.65564 6600
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14000 2010 1195.3567 44.039046 6600
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15000 2010 978.10764 39.976633 6600
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16000 2412 1050.2028 45.306777 6600
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17000 2412 1042.2556 39.814723 6600
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18000 2412 894.58742 40.161025 6600
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19000 2814 1009.3277 35.382235 6600
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20000 2814 959.77476 43.212143 6600
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21000 2814 757.47849 39.534175 6600
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22000 2814 516.06689 40.398841 6600
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23000 3000 425.8695 34.108574 6600
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24000 3000 364.2896 21.08092 6600
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25000 3000 233.88996 22.425122 6600
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Loop time of 5.38699 on 4 procs for 25000 steps with 3000 atoms
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Pair time (%) = 2.60355 (48.3304)
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Neigh time (%) = 0.395972 (7.35052)
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Comm time (%) = 0.990684 (18.3903)
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Outpt time (%) = 0.0757183 (1.40558)
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Other time (%) = 1.32106 (24.5232)
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Nlocal: 750 ave 756 max 739 min
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Histogram: 1 0 0 0 0 1 0 0 0 2
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Nghost: 393.25 ave 396 max 391 min
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Histogram: 1 0 1 0 0 0 1 0 0 1
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Neighs: 3579.5 ave 3599 max 3555 min
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Histogram: 1 0 0 1 0 0 0 0 1 1
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Total # of neighbors = 14318
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Ave neighs/atom = 4.77267
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Neighbor list builds = 1152
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Dangerous builds = 0
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unfix ins
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fix 2 all gravity 1.0 chute 26.0
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run 25000
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Memory usage per processor = 9.68015 Mbytes
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Step Atoms KinEng 1 Volume
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25000 3000 233.88996 22.425122 6600
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26000 3000 94.802134 17.549122 6600
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27000 3000 84.658562 11.506407 6600
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28000 3000 149.0234 10.886705 6600
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29000 3000 243.83101 12.132532 6600
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30000 3000 381.15166 15.317159 6600
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31000 3000 587.71932 21.367984 6600
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32000 3000 826.0934 26.605551 6600
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33000 3000 1140.3342 31.96551 6600
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34000 3000 1505.7889 37.710536 6600
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35000 3000 1960.1845 45.237554 6600
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36000 3000 2472.9089 53.069981 6600
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37000 3000 3112.7739 62.581623 6600
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38000 3000 3734.7804 67.445495 6600
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39000 3000 4500.8872 84.18578 6600
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40000 3000 5355.3316 93.151633 6600
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41000 3000 6255.1324 108.97752 6600
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42000 3000 7324.1987 117.58036 6600
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43000 3000 8367.5898 121.51706 6600
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44000 3000 9496.1313 142.43277 6600
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45000 3000 10606.37 154.24175 6600
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46000 3000 11882.466 176.47919 6600
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47000 3000 13234.56 183.71094 6600
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48000 3000 14627.514 184.71949 6600
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49000 3000 16011.412 206.20932 6600
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50000 3000 17388.366 220.15287 6600
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Loop time of 10.3308 on 4 procs for 25000 steps with 3000 atoms
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Pair time (%) = 5.72441 (55.4112)
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Neigh time (%) = 0.569629 (5.5139)
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Comm time (%) = 1.72206 (16.6692)
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Outpt time (%) = 0.145276 (1.40625)
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Other time (%) = 2.1694 (20.9994)
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Nlocal: 750 ave 763 max 736 min
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Histogram: 1 0 0 0 1 0 1 0 0 1
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Nghost: 398.5 ave 403 max 392 min
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Histogram: 1 0 0 0 0 0 1 1 0 1
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Neighs: 3670 ave 3803 max 3551 min
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Histogram: 1 0 0 1 0 1 0 0 0 1
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Total # of neighbors = 14680
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Ave neighs/atom = 4.89333
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Neighbor list builds = 784
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Dangerous builds = 0
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