forked from lijiext/lammps
98 lines
3.5 KiB
Groff
98 lines
3.5 KiB
Groff
LAMMPS (18 Feb 2013)
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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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#dump 1 all image 500 image.*.jpg type type # zoom 1.6 adiam 1.5
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#dump_modify 1 pad 5
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run 25000
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Memory usage per processor = 9.54554 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 1662.3643 111.88767 5000
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10000 896 1652.8654 91.325153 5000
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11000 896 1541.4417 70.862864 5000
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12000 896 1474.3165 61.956769 5000
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13000 1000 1463.9007 59.436066 5000
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14000 1000 1355.973 51.999639 5000
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15000 1000 1130.5891 49.13995 5000
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16000 1000 787.89487 46.05549 5000
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17000 1000 462.83858 40.678165 5000
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18000 1000 325.64118 32.743319 5000
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19000 1000 155.22607 30.549487 5000
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20000 1000 43.494925 22.262581 5000
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21000 1000 23.694914 15.061018 5000
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22000 1000 20.580126 10.477019 5000
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23000 1000 16.06558 7.3034265 5000
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24000 1000 12.026429 6.0665971 5000
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25000 1000 11.818403 5.4542268 5000
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Loop time of 0.908638 on 4 procs for 25000 steps with 1000 atoms
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Pair time (%) = 0.304472 (33.5086)
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Neigh time (%) = 0.0796848 (8.76969)
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Comm time (%) = 0.0719426 (7.91763)
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Outpt time (%) = 0.000483155 (0.0531735)
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Other time (%) = 0.452056 (49.7509)
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Nlocal: 250 ave 252 max 248 min
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Histogram: 1 0 1 0 0 0 0 1 0 1
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Nghost: 18 ave 25 max 12 min
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Histogram: 1 1 0 0 0 0 1 0 0 1
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Neighs: 604.25 ave 614 max 589 min
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Histogram: 1 0 0 0 1 0 0 0 0 2
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Total # of neighbors = 2417
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Ave neighs/atom = 2.417
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Neighbor list builds = 2023
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Dangerous builds = 0
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