90 lines
3.2 KiB
Groff
90 lines
3.2 KiB
Groff
LAMMPS (22 June 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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1 by 1 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 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 250 dump.pour
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run 25000
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Memory usage per processor = 0.320435 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 99.125785 5000
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10000 896 2986.9988 88.590036 5000
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11000 896 2829.9925 65.792313 5000
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12000 896 2742.7084 65.819834 5000
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13000 1000 2708.5986 57.322444 5000
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14000 1000 2465.496 61.169722 5000
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15000 1000 2053.8397 61.691032 5000
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16000 1000 1462.2958 51.138602 5000
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17000 1000 829.85835 42.214656 5000
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18000 1000 598.95282 32.11476 5000
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19000 1000 246.95726 30.259864 5000
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20000 1000 36.390829 15.37906 5000
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21000 1000 16.970773 8.7787109 5000
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22000 1000 11.318963 5.9319445 5000
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23000 1000 5.8086775 3.5214371 5000
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24000 1000 4.5594534 2.588639 5000
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25000 1000 2.1765737 0.75876888 5000
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Loop time of 24.7627 on 1 procs for 25000 steps with 1000 atoms
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Pair time (%) = 9.848 (39.7695)
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Neigh time (%) = 1.90215 (7.68151)
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Comm time (%) = 0.123851 (0.500152)
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Outpt time (%) = 0.407864 (1.64709)
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Other time (%) = 12.4808 (50.4017)
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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: 2469 ave 2469 max 2469 min
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Histogram: 1 0 0 0 0 0 0 0 0 0
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Total # of neighbors = 2469
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Ave neighs/atom = 2.469
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Neighbor list builds = 1600
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Dangerous builds = 0
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