forked from lijiext/lammps
94 lines
3.4 KiB
Groff
94 lines
3.4 KiB
Groff
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LAMMPS (10 Jan 2012)
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# Pour 2d granular particles into container
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dimension 2
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atom_style sphere
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boundary f fm p
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newton off
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communicate single vel yes
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region reg block 0 100 0 50 -0.5 0.5 units box
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create_box 1 reg
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Created orthogonal box = (0 0 -0.5) to (100 50 0.5)
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1 by 1 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 (4000) 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 = 4.0e5 and dt = 0.0001, as in bench/in.chute (if it were Hertzian).
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pair_style gran/hertz/history 4000.0 NULL 100.0 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 xwalls all wall/gran 4000.0 NULL 100.0 NULL 0 1 xplane 0 100
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fix ywalls all wall/gran 4000.0 NULL 100.0 NULL 0 1 yplane 0 NULL
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region slab block 1.0 99.0 30 34.5 -0.5 0.5 units box
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fix ins all pour 1000 1 4767548 vol 0.4 10 diam 0.5 1.0 region slab
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Particle insertion: 224 every 3000 steps, 1000 by step 12001
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fix 3 all enforce2d
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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 250 dump.pour
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run 25000
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Memory usage per processor = 9.58 Mbytes
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Step Atoms KinEng 1 Volume
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0 0 -0 0 5000
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1000 224 185.87695 0 5000
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2000 224 348.08417 0 5000
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3000 224 565.2162 0 5000
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4000 448 1042.9716 0 5000
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5000 448 1542.0614 0 5000
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6000 448 1766.5136 41.192729 5000
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7000 672 1846.4596 67.352592 5000
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8000 672 1814.3429 92.898167 5000
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9000 672 1662.3648 111.88805 5000
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10000 896 1654.7992 91.210682 5000
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11000 896 1539.2643 72.174442 5000
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12000 896 1479.3613 60.304466 5000
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13000 1000 1464.6099 54.360683 5000
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14000 1000 1357.776 50.981395 5000
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15000 1000 1129.2816 50.644045 5000
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16000 1000 795.55925 47.94934 5000
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17000 1000 448.80612 42.4465 5000
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18000 1000 320.15236 34.231318 5000
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19000 1000 150.74762 35.789901 5000
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20000 1000 49.636313 19.317565 5000
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21000 1000 24.980341 13.517257 5000
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22000 1000 17.164368 9.7652983 5000
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23000 1000 15.131329 7.6229469 5000
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24000 1000 13.291283 5.8822567 5000
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25000 1000 12.481182 3.8348041 5000
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Loop time of 2.97817 on 1 procs for 25000 steps with 1000 atoms
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Pair time (%) = 1.23279 (41.3941)
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Neigh time (%) = 0.302755 (10.1658)
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Comm time (%) = 0.0113213 (0.380143)
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Outpt time (%) = 0.0628569 (2.11059)
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Other time (%) = 1.36845 (45.9494)
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Nlocal: 1000 ave 1000 max 1000 min
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Histogram: 1 0 0 0 0 0 0 0 0 0
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Nghost: 0 ave 0 max 0 min
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Histogram: 1 0 0 0 0 0 0 0 0 0
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Neighs: 2377 ave 2377 max 2377 min
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Histogram: 1 0 0 0 0 0 0 0 0 0
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Total # of neighbors = 2377
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Ave neighs/atom = 2.377
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Neighbor list builds = 2001
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Dangerous builds = 0
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