forked from lijiext/lammps
101 lines
3.6 KiB
Groff
101 lines
3.6 KiB
Groff
LAMMPS (1 Feb 2014)
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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 range 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 2 all image 500 image.*.jpg type type # zoom 1.6 adiam 1.5
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#dump_modify 2 pad 5
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#dump 3 all movie 500 movie.mpg type type # zoom 1.6 adiam 1.5
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#dump_modify 3 pad 5
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run 25000
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Memory usage per processor = 8.36296 Mbytes
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Step Atoms KinEng 1 Volume
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0 0 -0 0 5000
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1000 224 201.77464 0 5000
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2000 224 372.42868 0 5000
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3000 224 599.60221 0 5000
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4000 448 1084.3752 0 5000
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5000 448 1592.4543 0 5000
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6000 448 1763.3153 37.274939 5000
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7000 672 1805.206 89.331853 5000
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8000 672 1778.0015 111.58381 5000
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9000 672 1592.6805 97.550227 5000
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10000 896 1631.0865 79.644395 5000
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11000 896 1592.1233 66.618058 5000
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12000 896 1538.0168 62.305427 5000
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13000 1000 1504.7663 60.453118 5000
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14000 1000 1258.4278 56.953463 5000
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15000 1000 1051.3757 49.481041 5000
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16000 1000 745.26845 46.064462 5000
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17000 1000 461.4175 44.190391 5000
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18000 1000 321.52252 32.000638 5000
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19000 1000 219.94195 27.786071 5000
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20000 1000 47.588667 19.150667 5000
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21000 1000 22.265142 13.29654 5000
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22000 1000 16.795774 9.1519062 5000
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23000 1000 14.227042 7.3286667 5000
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24000 1000 10.712738 5.4385743 5000
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25000 1000 9.180883 3.4376108 5000
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Loop time of 0.936714 on 4 procs for 25000 steps with 1000 atoms
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Pair time (%) = 0.304334 (32.4896)
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Neigh time (%) = 0.0807448 (8.62001)
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Comm time (%) = 0.0846794 (9.04005)
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Outpt time (%) = 0.000462651 (0.0493909)
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Other time (%) = 0.466493 (49.801)
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Nlocal: 250 ave 260 max 230 min
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Histogram: 1 0 0 0 0 0 0 1 0 2
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Nghost: 17.5 ave 24 max 12 min
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Histogram: 2 0 0 0 0 0 0 0 1 1
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Neighs: 598.25 ave 630 max 546 min
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Histogram: 1 0 0 0 0 0 1 0 1 1
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Total # of neighbors = 2393
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Ave neighs/atom = 2.393
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Neighbor list builds = 2035
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Dangerous builds = 0
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