lammps/examples/body/in.pour3d

# pouring 3d rounded polyhedron bodies

variable    steps index 6000

units       lj
boundary    p p fm
comm_modify vel yes

atom_style  body rounded/polyhedron 1 8
atom_modify map array

region		reg block 0 50 0 50 0 50 units box
create_box	4 reg

variable cut_inner  equal 0.5
variable k_n        equal 100
variable k_na       equal 5
variable c_n        equal 20
variable c_t        equal 5
variable mu         equal 0
variable A_ua       equal 1

pair_style body/rounded/polyhedron ${c_n} ${c_t} ${mu} ${A_ua} ${cut_inner}
pair_coeff * * ${k_n} ${k_na}

neighbor     0.5 bin
neigh_modify every 1 delay 0 check yes

timestep     0.001

fix          1 all nve/body
fix          2 all gravity 1.0 spherical 0.0 -180.0

molecule     object molecule.cube molecule.tetra toff 1 &
             molecule.rod3d toff 2 molecule.point3d toff 3

region       slab block 5 45 5 45 25 35 units box
fix          ins all pour 500 0 4767548 vol 0.4 10 region slab mol object &
             molfrac 0.25 0.25 0.25 0.25

fix          4 all wall/body/polyhedron 2000 50 50 zplane 0.0 NULL

#compute      1 all body/local type 1 2 3
#dump         1 all local 1000 dump.polyhedron index c_1[1] c_1[2] c_1[3] c_1[4]
#dump         10 all custom 1000 tmp.dump id type x y z radius

thermo_style custom step atoms ke pe etotal press

thermo       1000

#dump	     2 all image 500 image.*.jpg type type &
#	     zoom 1.5 adiam 1.5 body type 0 0 view 75 15
#dump_modify  2 pad 6

run	     ${steps}