forked from lijiext/lammps
140 lines
5.4 KiB
Groff
140 lines
5.4 KiB
Groff
|
LAMMPS (7 Jul 2009)
|
||
|
|
# Pour granular particles into chute container, then induce flow
|
||
|
|
|
||
|
|
atom_style granular
|
||
|
|
boundary p p fm
|
||
|
|
newton off
|
||
|
|
|
||
|
|
region reg block -10 10 -10 10 -0.5 16 units box
|
||
|
|
create_box 1 reg
|
||
|
|
Created orthogonal box = (-10 -10 -0.5) to (10 10 16)
|
||
|
|
2 by 2 by 1 processor grid
|
||
|
|
|
||
|
|
neighbor 0.2 bin
|
||
|
|
neigh_modify delay 0
|
||
|
|
|
||
|
|
# IMPORTANT NOTE: these values of stiffness (2000) 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 = 2.0e5 and dt = 0.0001, as in bench/in.chute.
|
||
|
|
|
||
|
|
pair_style gran/hooke/history 2000.0 NULL 50.0 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 zlower all wall/gran 2000.0 NULL 50.0 NULL 0.5 0 zplane 0.0 2000.0
|
||
|
|
|
||
|
|
region slab block -9.0 9.0 -9.0 9.0 10.0 15.0 units box
|
||
|
|
fix ins all pour 3000 1 300719 vol 0.13 50 region slab
|
||
|
|
Particle insertion: 402 every 3162 steps, 3000 by step 22135
|
||
|
|
|
||
|
|
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 1000 dump.pour
|
||
|
|
run 25000
|
||
|
|
Memory usage per processor = 3.14935 Mbytes
|
||
|
|
Step Atoms KinEng 1 Volume
|
||
|
|
0 0 -0 0 6600
|
||
|
|
1000 402 779.98578 0 6600
|
||
|
|
2000 402 1424.4252 0 6600
|
||
|
|
3000 402 1425.0863 12.9927 6600
|
||
|
|
4000 804 1724.8627 47.36161 6600
|
||
|
|
5000 804 1599.9516 63.808734 6600
|
||
|
|
6000 804 1359.1774 63.495338 6600
|
||
|
|
7000 1206 1532.7896 68.602762 6600
|
||
|
|
8000 1206 1403.019 62.696462 6600
|
||
|
|
9000 1206 1246.5766 52.235655 6600
|
||
|
|
10000 1608 1384.2625 50.982242 6600
|
||
|
|
11000 1608 1243.1052 51.141884 6600
|
||
|
|
12000 1608 1195.3028 40.935179 6600
|
||
|
|
13000 2010 1328.4985 50.722781 6600
|
||
|
|
14000 2010 1198.4098 45.628483 6600
|
||
|
|
15000 2010 997.57313 41.390864 6600
|
||
|
|
16000 2412 1037.0841 43.223404 6600
|
||
|
|
17000 2412 1018.8984 38.835381 6600
|
||
|
|
18000 2412 930.69902 35.880622 6600
|
||
|
|
19000 2814 1007.138 37.703169 6600
|
||
|
|
20000 2814 967.57176 41.267685 6600
|
||
|
|
21000 2814 772.7741 44.763252 6600
|
||
|
|
22000 2814 525.78939 38.98055 6600
|
||
|
|
23000 3000 429.75161 34.235783 6600
|
||
|
|
24000 3000 364.4473 21.966186 6600
|
||
|
|
25000 3000 218.90078 24.596278 6600
|
||
|
|
Loop time of 12.4018 on 4 procs for 25000 steps with 3000 atoms
|
||
|
|
|
||
|
|
Pair time (%) = 2.93148 (23.6375)
|
||
|
|
Neigh time (%) = 0.440789 (3.55422)
|
||
|
|
Comm time (%) = 5.24973 (42.3302)
|
||
|
|
Outpt time (%) = 0.0958874 (0.773171)
|
||
|
|
Other time (%) = 3.68395 (29.7049)
|
||
|
|
|
||
|
|
Nlocal: 750 ave 757 max 742 min
|
||
|
|
Histogram: 1 0 0 1 0 0 0 0 1 1
|
||
|
|
Nghost: 389.75 ave 396 max 382 min
|
||
|
|
Histogram: 1 0 0 1 0 0 0 0 1 1
|
||
|
|
Neighs: 3579 ave 3625 max 3541 min
|
||
|
|
Histogram: 1 0 0 0 2 0 0 0 0 1
|
||
|
|
|
||
|
|
Total # of neighbors = 14316
|
||
|
|
Ave neighs/atom = 4.772
|
||
|
|
Neighbor list builds = 1152
|
||
|
|
Dangerous builds = 0
|
||
|
|
|
||
|
|
unfix ins
|
||
|
|
fix 2 all gravity 1.0 chute 26.0
|
||
|
|
run 25000
|
||
|
|
Memory usage per processor = 9.68014 Mbytes
|
||
|
|
Step Atoms KinEng 1 Volume
|
||
|
|
25000 3000 218.90078 24.596278 6600
|
||
|
|
26000 3000 108.47989 19.098297 6600
|
||
|
|
27000 3000 95.772626 12.451488 6600
|
||
|
|
28000 3000 168.56408 11.2661 6600
|
||
|
|
29000 3000 266.55027 12.736385 6600
|
||
|
|
30000 3000 429.91963 16.099577 6600
|
||
|
|
31000 3000 653.50177 20.833152 6600
|
||
|
|
32000 3000 941.4538 27.486019 6600
|
||
|
|
33000 3000 1287.1593 35.913238 6600
|
||
|
|
34000 3000 1705.1323 44.1634 6600
|
||
|
|
35000 3000 2274.278 50.268183 6600
|
||
|
|
36000 3000 2864.078 55.78932 6600
|
||
|
|
37000 3000 3565.6924 69.196132 6600
|
||
|
|
38000 3000 4360.8456 82.984183 6600
|
||
|
|
39000 3000 5227.4355 101.09226 6600
|
||
|
|
40000 3000 6138.5626 102.21419 6600
|
||
|
|
41000 3000 7143.2929 117.41759 6600
|
||
|
|
42000 3000 8246.8072 123.70515 6600
|
||
|
|
43000 3000 9409.9225 134.14761 6600
|
||
|
|
44000 3000 10593.288 157.7653 6600
|
||
|
|
45000 3000 12018.948 178.91396 6600
|
||
|
|
46000 3000 13410.044 196.8436 6600
|
||
|
|
47000 3000 14750.988 191.71558 6600
|
||
|
|
48000 3000 16088.89 203.0547 6600
|
||
|
|
49000 3000 17512.26 218.17825 6600
|
||
|
|
50000 3000 18836.338 213.33912 6600
|
||
|
|
Loop time of 17.9768 on 4 procs for 25000 steps with 3000 atoms
|
||
|
|
|
||
|
|
Pair time (%) = 6.41246 (35.6707)
|
||
|
|
Neigh time (%) = 0.669206 (3.72261)
|
||
|
|
Comm time (%) = 6.30764 (35.0876)
|
||
|
|
Outpt time (%) = 0.143959 (0.800805)
|
||
|
|
Other time (%) = 4.44356 (24.7183)
|
||
|
|
|
||
|
|
Nlocal: 750 ave 757 max 747 min
|
||
|
|
Histogram: 1 2 0 0 0 0 0 0 0 1
|
||
|
|
Nghost: 408.5 ave 414 max 402 min
|
||
|
|
Histogram: 1 0 0 0 0 2 0 0 0 1
|
||
|
|
Neighs: 3665.75 ave 3717 max 3597 min
|
||
|
|
Histogram: 1 0 0 0 1 0 0 0 1 1
|
||
|
|
|
||
|
|
Total # of neighbors = 14663
|
||
|
|
Ave neighs/atom = 4.88767
|
||
|
|
Neighbor list builds = 821
|
||
|
|
Dangerous builds = 0
|