137 lines
5.3 KiB
Groff
137 lines
5.3 KiB
Groff
LAMMPS (22 June 2007)
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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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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/history 2000.0 50.0 0.5 0
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timestep 0.001
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fix 1 all nve/gran
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fix 2 all gravity spherical 0.0 -180.0
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fix zlower all wall/gran zplane 0.0 2000.0 50.0 0.5
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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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thermo_style granular
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thermo 1000
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thermo_modify lost ignore
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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 = 0.335693 Mbytes
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Step Atoms KinEng RotKEgrn 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 1424.6738 13.243803 6600
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4000 804 1725.4319 47.250762 6600
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5000 804 1605.2015 60.084404 6600
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6000 804 1371.3425 69.247899 6600
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7000 1206 1524.3574 74.071529 6600
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8000 1206 1418.8997 60.727536 6600
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9000 1206 1258.0238 52.045974 6600
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10000 1608 1387.2361 50.17452 6600
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11000 1608 1226.8131 50.547962 6600
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12000 1608 1195.97 41.951622 6600
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13000 2010 1312.7197 51.888514 6600
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14000 2010 1176.2242 43.086598 6600
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15000 2010 972.7316 46.053358 6600
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16000 2412 1040.0907 45.535472 6600
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17000 2412 1033.3053 37.798831 6600
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18000 2412 929.20314 37.574869 6600
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19000 2814 1010.9926 38.716555 6600
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20000 2814 953.49259 41.76949 6600
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21000 2814 768.81045 45.76655 6600
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22000 2814 501.98827 42.18076 6600
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23000 3000 428.98535 35.914834 6600
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24000 3000 365.81359 22.320118 6600
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25000 3000 227.404 23.276402 6600
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Loop time of 12.9955 on 4 procs for 25000 steps with 3000 atoms
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Pair time (%) = 4.94591 (38.0586)
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Neigh time (%) = 0.678777 (5.22316)
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Comm time (%) = 3.9515 (30.4066)
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Outpt time (%) = 0.122208 (0.940388)
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Other time (%) = 3.29713 (25.3713)
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Nlocal: 750 ave 766 max 734 min
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Histogram: 1 0 0 0 0 2 0 0 0 1
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Nghost: 388.75 ave 395 max 386 min
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Histogram: 1 2 0 0 0 0 0 0 0 1
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Neighs: 3588.5 ave 3661 max 3520 min
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Histogram: 1 0 0 1 0 1 0 0 0 1
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Total # of neighbors = 14354
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Ave neighs/atom = 4.78467
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Neighbor list builds = 1154
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Dangerous builds = 0
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unfix ins
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fix 2 all gravity chute 26.0
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run 25000
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Memory usage per processor = 6.82838 Mbytes
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Step Atoms KinEng RotKEgrn Volume
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25000 3000 227.404 23.276402 6600
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26000 3000 106.43826 18.101442 6600
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27000 3000 113.05348 12.760864 6600
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28000 3000 205.07328 11.584573 6600
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29000 3000 358.43804 15.113582 6600
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30000 3000 598.64933 20.578979 6600
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31000 3000 873.5316 28.461109 6600
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32000 3000 1170.5204 31.532882 6600
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33000 3000 1527.4366 38.434515 6600
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34000 3000 1984.9084 46.821444 6600
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35000 3000 2510.0466 50.236977 6600
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36000 3000 3115.8979 66.529363 6600
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37000 3000 3828.8672 78.585843 6600
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38000 3000 4614.202 90.003111 6600
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39000 3000 5443.9784 97.5867 6600
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40000 3000 6277.0696 109.40245 6600
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41000 3000 7205.7543 116.90896 6600
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42000 3000 8231.9822 123.54846 6600
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43000 3000 9341.3262 139.91668 6600
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44000 3000 10540.217 154.5832 6600
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45000 3000 11634.026 163.89013 6600
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46000 3000 12939.113 172.01293 6600
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47000 3000 14117.982 183.04471 6600
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48000 3000 15405.59 211.29982 6600
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49000 3000 16780.191 197.48907 6600
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50000 3000 18147.971 232.52213 6600
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Loop time of 23.7168 on 4 procs for 25000 steps with 3000 atoms
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Pair time (%) = 10.9603 (46.2134)
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Neigh time (%) = 1.05963 (4.46785)
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Comm time (%) = 5.99627 (25.2828)
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Outpt time (%) = 0.196248 (0.827465)
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Other time (%) = 5.5043 (23.2085)
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Nlocal: 750 ave 757 max 742 min
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Histogram: 1 0 0 0 1 0 0 1 0 1
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Nghost: 401.5 ave 412 max 390 min
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Histogram: 1 0 1 0 0 0 0 0 1 1
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Neighs: 3645.75 ave 3775 max 3584 min
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Histogram: 1 2 0 0 0 0 0 0 0 1
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Total # of neighbors = 14583
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Ave neighs/atom = 4.861
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Neighbor list builds = 825
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Dangerous builds = 0
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