forked from lijiext/lammps
94 lines
3.4 KiB
Groff
94 lines
3.4 KiB
Groff
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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4 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 = 9.54553 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 1652.9645 91.148046 5000
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11000 896 1544.0839 72.455734 5000
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12000 896 1482.8514 61.292588 5000
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13000 1000 1475.79 53.415861 5000
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14000 1000 1352.8641 48.564355 5000
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15000 1000 1139.726 49.60352 5000
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16000 1000 764.34421 48.189757 5000
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17000 1000 455.09361 40.071967 5000
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18000 1000 327.13469 31.827836 5000
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19000 1000 148.91195 27.999011 5000
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20000 1000 38.454385 18.618798 5000
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21000 1000 22.643678 12.282344 5000
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22000 1000 15.147799 9.0623019 5000
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23000 1000 14.799777 6.3928279 5000
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24000 1000 13.08654 4.3024153 5000
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25000 1000 9.9394032 2.8165017 5000
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Loop time of 1.00262 on 4 procs for 25000 steps with 1000 atoms
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Pair time (%) = 0.317535 (31.6705)
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Neigh time (%) = 0.0773075 (7.71053)
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Comm time (%) = 0.0878609 (8.76312)
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Outpt time (%) = 0.0486338 (4.85067)
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Other time (%) = 0.471284 (47.0052)
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Nlocal: 250 ave 256 max 242 min
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Histogram: 1 0 0 0 1 0 0 0 1 1
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Nghost: 17.75 ave 27 max 10 min
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Histogram: 2 0 0 0 0 0 0 1 0 1
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Neighs: 593.25 ave 615 max 562 min
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Histogram: 1 0 0 0 0 0 1 1 0 1
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Total # of neighbors = 2373
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Ave neighs/atom = 2.373
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Neighbor list builds = 1970
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Dangerous builds = 0
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