forked from lijiext/lammps
141 lines
5.4 KiB
Groff
141 lines
5.4 KiB
Groff
LAMMPS (10 Jan 2012)
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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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run 25000
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Memory usage per processor = 9.33681 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 1403.0157 62.695773 6600
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9000 1206 1247.1628 52.19506 6600
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10000 1608 1387.5362 50.008374 6600
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11000 1608 1228.9965 56.530496 6600
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12000 1608 1182.7545 41.38682 6600
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13000 2010 1319.2313 50.362256 6600
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14000 2010 1190.8341 41.724733 6600
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15000 2010 988.00931 42.639716 6600
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16000 2412 1031.9305 42.375533 6600
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17000 2412 1023.2524 38.401997 6600
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18000 2412 888.81798 40.234895 6600
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19000 2814 1013.2166 37.977584 6600
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20000 2814 961.0454 42.964962 6600
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21000 2814 756.00399 43.054932 6600
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22000 2814 503.12293 39.636291 6600
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23000 3000 412.84921 37.815016 6600
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24000 3000 353.49951 20.864487 6600
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25000 3000 222.50381 24.26074 6600
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Loop time of 2.95472 on 4 procs for 25000 steps with 3000 atoms
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Pair time (%) = 1.40256 (47.4686)
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Neigh time (%) = 0.270042 (9.13935)
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Comm time (%) = 0.360771 (12.21)
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Outpt time (%) = 0.0365846 (1.23818)
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Other time (%) = 0.88476 (29.9439)
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Nlocal: 750 ave 767 max 734 min
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Histogram: 1 0 0 0 2 0 0 0 0 1
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Nghost: 380.5 ave 388 max 372 min
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Histogram: 1 0 0 0 0 1 1 0 0 1
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Neighs: 3552 ave 3598 max 3519 min
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Histogram: 1 0 1 0 1 0 0 0 0 1
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Total # of neighbors = 14208
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Ave neighs/atom = 4.736
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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 = 10.1161 Mbytes
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Step Atoms KinEng 1 Volume
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25000 3000 222.50381 24.26074 6600
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26000 3000 103.84389 17.673297 6600
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27000 3000 117.46883 12.700769 6600
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28000 3000 202.8228 11.854593 6600
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29000 3000 338.12554 14.379583 6600
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30000 3000 530.86986 19.321511 6600
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31000 3000 824.66397 26.939631 6600
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32000 3000 1155.8653 30.710187 6600
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33000 3000 1546.6549 39.339113 6600
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34000 3000 1977.8218 45.981666 6600
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35000 3000 2493.4385 56.240346 6600
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36000 3000 3128.6938 61.747587 6600
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37000 3000 3751.9442 68.433001 6600
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38000 3000 4449.2141 80.107271 6600
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39000 3000 5236.7855 88.674736 6600
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40000 3000 6065.0048 98.949373 6600
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41000 3000 6988.557 108.17154 6600
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42000 3000 7978.2872 122.87119 6600
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43000 3000 9163.9553 140.17673 6600
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44000 3000 10400.417 145.57715 6600
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45000 3000 11691.456 177.59735 6600
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46000 3000 13208.301 188.38293 6600
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47000 3000 14621.935 175.09272 6600
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48000 3000 15911.432 200.24219 6600
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49000 3000 17240.493 211.19416 6600
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50000 3000 18716.039 229.23732 6600
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Loop time of 5.63779 on 4 procs for 25000 steps with 3000 atoms
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Pair time (%) = 3.14085 (55.7107)
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Neigh time (%) = 0.425642 (7.5498)
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Comm time (%) = 0.570795 (10.1244)
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Outpt time (%) = 0.0593259 (1.05229)
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Other time (%) = 1.44118 (25.5628)
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Nlocal: 750 ave 767 max 738 min
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Histogram: 1 0 1 0 1 0 0 0 0 1
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Nghost: 403.75 ave 414 max 396 min
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Histogram: 1 1 0 0 0 0 1 0 0 1
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Neighs: 3687.25 ave 3795 max 3643 min
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Histogram: 2 1 0 0 0 0 0 0 0 1
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Total # of neighbors = 14749
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Ave neighs/atom = 4.91633
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Neighbor list builds = 832
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Dangerous builds = 0
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