forked from lijiext/lammps
90 lines
3.2 KiB
Groff
90 lines
3.2 KiB
Groff
LAMMPS (5 Oct 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 f 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 orthogonal 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 0.5 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 1.0 spherical 0.0 -180.0
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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 250 dump.pour
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run 25000
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Memory usage per processor = 0.352085 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 3240.26 51.002089 5000
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7000 672 3375.857 86.854847 5000
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8000 672 3218.9668 120.74194 5000
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9000 672 3042.428 99.125781 5000
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10000 896 2986.9987 88.589831 5000
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11000 896 2829.33 66.164478 5000
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12000 896 2741.8245 63.121034 5000
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13000 1000 2712.6085 62.756506 5000
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14000 1000 2481.4123 60.427347 5000
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15000 1000 2061.8464 56.399834 5000
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16000 1000 1452.1851 54.458544 5000
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17000 1000 833.03811 44.980618 5000
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18000 1000 585.79885 36.672365 5000
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19000 1000 276.7811 30.881939 5000
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20000 1000 30.566489 17.571585 5000
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21000 1000 18.21801 9.3358364 5000
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22000 1000 11.354764 5.1520478 5000
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23000 1000 7.4178622 2.1905651 5000
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24000 1000 4.6531861 1.0674461 5000
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25000 1000 2.6666049 0.68062336 5000
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Loop time of 9.62136 on 4 procs for 25000 steps with 1000 atoms
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Pair time (%) = 0.98827 (10.2716)
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Neigh time (%) = 0.0966545 (1.00458)
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Comm time (%) = 4.10397 (42.6548)
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Outpt time (%) = 0.137718 (1.43137)
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Other time (%) = 4.29474 (44.6376)
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Nlocal: 250 ave 503 max 0 min
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Histogram: 2 0 0 0 0 0 0 0 0 2
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Nghost: 6.25 ave 13 max 0 min
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Histogram: 2 0 0 0 0 0 0 0 0 2
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Neighs: 621.75 ave 1244 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 = 2487
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Ave neighs/atom = 2.487
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Neighbor list builds = 1607
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Dangerous builds = 0
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