forked from lijiext/lammps
148 lines
5.6 KiB
Groff
148 lines
5.6 KiB
Groff
LAMMPS (1 Feb 2014)
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# Pour granular particles into chute container, then induce flow
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atom_style sphere
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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 MPI 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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#dump 2 all image 1000 image.*.jpg type type # axes yes 0.8 0.02 view 80 -30
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#dump_modify 2 pad 5
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#dump 3 all movie 1000 movie.mpg type type # axes yes 0.8 0.02 view 80 -30
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#dump_modify 3 pad 5
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run 25000
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Memory usage per processor = 8.15424 Mbytes
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Step Atoms KinEng 1 Volume
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0 0 -0 0 6600
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1000 402 768.04606 0 6600
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2000 402 1407.1714 0 6600
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3000 402 1373.819 15.59952 6600
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4000 804 1737.1399 39.311164 6600
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5000 804 1571.3184 67.501382 6600
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6000 804 1318.6439 77.636174 6600
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7000 1206 1521.8348 69.010381 6600
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8000 1206 1391.0761 64.407585 6600
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9000 1206 1264.9766 50.327155 6600
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10000 1608 1463.0633 49.89601 6600
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11000 1608 1316.7149 52.402835 6600
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12000 1608 1114.153 46.872522 6600
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13000 2010 1205.8869 51.481237 6600
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14000 2010 1185.8628 42.191907 6600
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15000 2010 972.77031 43.899414 6600
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16000 2412 1104.0835 40.181571 6600
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17000 2412 1071.8592 41.109972 6600
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18000 2412 855.89199 38.898224 6600
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19000 2814 974.59266 41.798845 6600
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20000 2814 949.73588 41.312762 6600
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21000 2814 785.75949 39.506434 6600
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22000 2814 568.33487 35.152281 6600
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23000 3000 469.29459 37.172088 6600
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24000 3000 335.08614 25.096975 6600
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25000 3000 235.38783 16.956807 6600
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Loop time of 2.9825 on 4 procs for 25000 steps with 3000 atoms
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Pair time (%) = 1.36805 (45.8694)
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Neigh time (%) = 0.27838 (9.33378)
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Comm time (%) = 0.419477 (14.0646)
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Outpt time (%) = 0.000649214 (0.0217675)
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Other time (%) = 0.915936 (30.7104)
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Nlocal: 750 ave 767 max 740 min
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Histogram: 1 1 0 1 0 0 0 0 0 1
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Nghost: 389 ave 399 max 379 min
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Histogram: 1 0 0 0 0 2 0 0 0 1
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Neighs: 3555.75 ave 3653 max 3498 min
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Histogram: 2 0 0 0 1 0 0 0 0 1
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Total # of neighbors = 14223
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Ave neighs/atom = 4.741
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Neighbor list builds = 1151
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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 = 8.928 Mbytes
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Step Atoms KinEng 1 Volume
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25000 3000 235.38783 16.956807 6600
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26000 3000 86.095398 21.734167 6600
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27000 3000 105.34548 13.070765 6600
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28000 3000 194.48452 12.668302 6600
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29000 3000 338.66556 14.53448 6600
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30000 3000 561.95176 20.01635 6600
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31000 3000 863.55789 28.935939 6600
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32000 3000 1245.8566 31.126919 6600
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33000 3000 1747.0561 43.002491 6600
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34000 3000 2297.4715 52.916382 6600
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35000 3000 2979.0692 60.599758 6600
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36000 3000 3668.5934 70.783571 6600
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37000 3000 4550.9061 84.848649 6600
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38000 3000 5458.0534 96.028867 6600
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39000 3000 6461.8152 108.41301 6600
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40000 3000 7504.9659 119.17697 6600
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41000 3000 8622.1932 129.66834 6600
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42000 3000 9729.2779 150.83916 6600
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43000 3000 11006.529 161.20608 6600
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44000 3000 12332.682 172.45763 6600
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45000 3000 13532.399 168.86419 6600
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46000 3000 14872.632 194.18978 6600
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47000 3000 16262.818 209.10627 6600
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48000 3000 17620.467 204.85493 6600
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49000 3000 19038.858 242.63587 6600
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50000 3000 20554.586 248.70106 6600
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Loop time of 5.60379 on 4 procs for 25000 steps with 3000 atoms
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Pair time (%) = 3.03686 (54.193)
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Neigh time (%) = 0.445322 (7.94679)
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Comm time (%) = 0.673944 (12.0266)
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Outpt time (%) = 0.000772476 (0.0137849)
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Other time (%) = 1.44689 (25.8198)
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Nlocal: 750 ave 766 max 736 min
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Histogram: 1 0 0 1 0 1 0 0 0 1
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Nghost: 402.75 ave 414 max 392 min
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Histogram: 1 0 0 0 1 1 0 0 0 1
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Neighs: 3675.25 ave 3716 max 3594 min
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Histogram: 1 0 0 0 0 0 0 0 2 1
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Total # of neighbors = 14701
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Ave neighs/atom = 4.90033
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Neighbor list builds = 859
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Dangerous builds = 0
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