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lammps/examples/pour/log.pour.2d.9Jan12.linux.4
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LAMMPS (10 Jan 2012)
# Pour 2d granular particles into container
dimension 2
atom_style sphere
boundary f fm p
newton off
communicate single vel yes
region reg block 0 100 0 50 -0.5 0.5 units box
create_box 1 reg
Created orthogonal box = (0 0 -0.5) to (100 50 0.5)
4 by 1 by 1 MPI processor grid
neighbor 0.2 bin
neigh_modify delay 0
# IMPORTANT NOTE: these values of stiffness (4000) and timestep (0.001)
# are used in this example file to produce a quick simulation and movie.
# More appropriate values for realistic simulations would be
# k = 4.0e5 and dt = 0.0001, as in bench/in.chute (if it were Hertzian).
pair_style gran/hertz/history 4000.0 NULL 100.0 NULL 0.5 0
pair_coeff * *
timestep 0.001
fix 1 all nve/sphere
fix 2 all gravity 1.0 spherical 0.0 -180.0
fix xwalls all wall/gran 4000.0 NULL 100.0 NULL 0 1 xplane 0 100
fix ywalls all wall/gran 4000.0 NULL 100.0 NULL 0 1 yplane 0 NULL
region slab block 1.0 99.0 30 34.5 -0.5 0.5 units box
fix ins all pour 1000 1 4767548 vol 0.4 10 diam 0.5 1.0 region slab
Particle insertion: 224 every 3000 steps, 1000 by step 12001
fix 3 all enforce2d
compute 1 all erotate/sphere
thermo_style custom step atoms ke c_1 vol
thermo 1000
thermo_modify lost ignore norm no
compute_modify thermo_temp dynamic yes
dump id all atom 250 dump.pour
run 25000
Memory usage per processor = 9.54553 Mbytes
Step Atoms KinEng 1 Volume
0 0 -0 0 5000
1000 224 185.87695 0 5000
2000 224 348.08417 0 5000
3000 224 565.2162 0 5000
4000 448 1042.9716 0 5000
5000 448 1542.0614 0 5000
6000 448 1766.5136 41.192729 5000
7000 672 1846.4596 67.352592 5000
8000 672 1814.3429 92.898167 5000
9000 672 1662.3648 111.88805 5000
10000 896 1652.9645 91.148046 5000
11000 896 1544.0839 72.455734 5000
12000 896 1482.8514 61.292588 5000
13000 1000 1475.79 53.415861 5000
14000 1000 1352.8641 48.564355 5000
15000 1000 1139.726 49.60352 5000
16000 1000 764.34421 48.189757 5000
17000 1000 455.09361 40.071967 5000
18000 1000 327.13469 31.827836 5000
19000 1000 148.91195 27.999011 5000
20000 1000 38.454385 18.618798 5000
21000 1000 22.643678 12.282344 5000
22000 1000 15.147799 9.0623019 5000
23000 1000 14.799777 6.3928279 5000
24000 1000 13.08654 4.3024153 5000
25000 1000 9.9394032 2.8165017 5000
Loop time of 1.00262 on 4 procs for 25000 steps with 1000 atoms
Pair time (%) = 0.317535 (31.6705)
Neigh time (%) = 0.0773075 (7.71053)
Comm time (%) = 0.0878609 (8.76312)
Outpt time (%) = 0.0486338 (4.85067)
Other time (%) = 0.471284 (47.0052)
Nlocal: 250 ave 256 max 242 min
Histogram: 1 0 0 0 1 0 0 0 1 1
Nghost: 17.75 ave 27 max 10 min
Histogram: 2 0 0 0 0 0 0 1 0 1
Neighs: 593.25 ave 615 max 562 min
Histogram: 1 0 0 0 0 0 1 1 0 1
Total # of neighbors = 2373
Ave neighs/atom = 2.373
Neighbor list builds = 1970
Dangerous builds = 0
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