forked from lijiext/lammps
140 lines
5.4 KiB
Groff
140 lines
5.4 KiB
Groff
LAMMPS (7 Jul 2009)
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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/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 = 3.14935 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 1384.2625 50.982242 6600
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11000 1608 1243.1052 51.141884 6600
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12000 1608 1195.3028 40.935179 6600
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13000 2010 1328.4985 50.722781 6600
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14000 2010 1198.4098 45.628483 6600
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15000 2010 997.57313 41.390864 6600
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16000 2412 1037.0841 43.223404 6600
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17000 2412 1018.8984 38.835381 6600
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18000 2412 930.69902 35.880622 6600
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19000 2814 1007.138 37.703169 6600
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20000 2814 967.57176 41.267685 6600
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21000 2814 772.7741 44.763252 6600
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22000 2814 525.78939 38.98055 6600
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23000 3000 429.75161 34.235783 6600
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24000 3000 364.4473 21.966186 6600
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25000 3000 218.90078 24.596278 6600
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Loop time of 12.4018 on 4 procs for 25000 steps with 3000 atoms
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Pair time (%) = 2.93148 (23.6375)
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Neigh time (%) = 0.440789 (3.55422)
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Comm time (%) = 5.24973 (42.3302)
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Outpt time (%) = 0.0958874 (0.773171)
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Other time (%) = 3.68395 (29.7049)
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Nlocal: 750 ave 757 max 742 min
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Histogram: 1 0 0 1 0 0 0 0 1 1
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Nghost: 389.75 ave 396 max 382 min
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Histogram: 1 0 0 1 0 0 0 0 1 1
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Neighs: 3579 ave 3625 max 3541 min
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Histogram: 1 0 0 0 2 0 0 0 0 1
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Total # of neighbors = 14316
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Ave neighs/atom = 4.772
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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 = 9.68014 Mbytes
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Step Atoms KinEng 1 Volume
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25000 3000 218.90078 24.596278 6600
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26000 3000 108.47989 19.098297 6600
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27000 3000 95.772626 12.451488 6600
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28000 3000 168.56408 11.2661 6600
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29000 3000 266.55027 12.736385 6600
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30000 3000 429.91963 16.099577 6600
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31000 3000 653.50177 20.833152 6600
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32000 3000 941.4538 27.486019 6600
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33000 3000 1287.1593 35.913238 6600
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34000 3000 1705.1323 44.1634 6600
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35000 3000 2274.278 50.268183 6600
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36000 3000 2864.078 55.78932 6600
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37000 3000 3565.6924 69.196132 6600
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38000 3000 4360.8456 82.984183 6600
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39000 3000 5227.4355 101.09226 6600
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40000 3000 6138.5626 102.21419 6600
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41000 3000 7143.2929 117.41759 6600
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42000 3000 8246.8072 123.70515 6600
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43000 3000 9409.9225 134.14761 6600
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44000 3000 10593.288 157.7653 6600
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45000 3000 12018.948 178.91396 6600
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46000 3000 13410.044 196.8436 6600
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47000 3000 14750.988 191.71558 6600
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48000 3000 16088.89 203.0547 6600
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49000 3000 17512.26 218.17825 6600
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50000 3000 18836.338 213.33912 6600
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Loop time of 17.9768 on 4 procs for 25000 steps with 3000 atoms
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Pair time (%) = 6.41246 (35.6707)
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Neigh time (%) = 0.669206 (3.72261)
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Comm time (%) = 6.30764 (35.0876)
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Outpt time (%) = 0.143959 (0.800805)
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Other time (%) = 4.44356 (24.7183)
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Nlocal: 750 ave 757 max 747 min
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Histogram: 1 2 0 0 0 0 0 0 0 1
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Nghost: 408.5 ave 414 max 402 min
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Histogram: 1 0 0 0 0 2 0 0 0 1
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Neighs: 3665.75 ave 3717 max 3597 min
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Histogram: 1 0 0 0 1 0 0 0 1 1
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Total # of neighbors = 14663
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Ave neighs/atom = 4.88767
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Neighbor list builds = 821
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Dangerous builds = 0
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