90 lines
3.2 KiB
Groff
90 lines
3.2 KiB
Groff
LAMMPS (12 Feb 2007)
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# Pour 2d granular particles into container
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dimension 2
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atom_style granular
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boundary p fm p
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newton off
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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 box = (0 0 -0.5) to (100 50 0.5)
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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/hertzian 2000.0 50.0 0.0 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 90.0 -90.0
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fix xwalls all wall/gran xplane 0 100 50 0
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fix ywalls all wall/gran yplane 0 NULL 50 0
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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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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 100 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 5000
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1000 224 348.20549 0 5000
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2000 224 650.98655 0 5000
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3000 224 1056.0039 0 5000
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4000 448 1941.6817 0 5000
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5000 448 2869.092 0 5000
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6000 448 3310.8798 0 5000
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7000 672 3505.2381 0 5000
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8000 672 3325.8942 0 5000
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9000 672 3165.2505 0 5000
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10000 896 3170.2639 0 5000
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11000 896 2947.3721 0 5000
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12000 896 2860.549 0 5000
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13000 1000 2845.3312 0 5000
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14000 1000 2632.0994 0 5000
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15000 1000 2195.3133 0 5000
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16000 1000 1551.8485 0 5000
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17000 1000 941.82431 0 5000
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18000 1000 684.95986 0 5000
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19000 1000 346.24904 0 5000
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20000 1000 100.47441 0 5000
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21000 1000 55.606283 0 5000
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22000 1000 47.410559 0 5000
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23000 1000 38.365449 0 5000
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24000 1000 27.535477 0 5000
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25000 1000 16.082932 0 5000
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Loop time of 7.63049 on 4 procs for 25000 steps with 1000 atoms
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Pair time (%) = 1.21044 (15.8632)
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Neigh time (%) = 0.267945 (3.51151)
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Comm time (%) = 1.8156 (23.794)
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Outpt time (%) = 0.418886 (5.48963)
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Other time (%) = 3.91762 (51.3417)
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Nlocal: 250 ave 502 max 0 min
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Histogram: 2 0 0 0 0 0 0 0 0 2
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Nghost: 12 ave 25 max 0 min
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Histogram: 2 0 0 0 0 0 0 0 0 2
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Neighs: 620.5 ave 1252 max 0 min
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Histogram: 2 0 0 0 0 0 0 0 0 2
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Total # of neighbors = 2482
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Ave neighs/atom = 2.482
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Neighbor list builds = 1725
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Dangerous builds = 0
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