# Pour 2d granular particles into container dimension 2 atom_style sphere atom_modify map array boundary f fm p newton off comm_modify vel yes cutoff 2.5 fix prop all property/atom mol ghost yes region reg block 0 100 0 50 -0.5 0.5 units box create_box 1 reg 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 2 all gravity 1.0 spherical 0.0 -180.0 fix xwalls all wall/gran hertz/history 4000.0 NULL 100.0 NULL 0 1 & xplane 0 100 fix ywalls all wall/gran hertz/history 4000.0 NULL 100.0 NULL 0 1 & yplane 0 NULL molecule object molecule.vshape fix 3 all rigid/small molecule mol object # insure region size + molecule size does not overlap wall region slab block 3.0 97.0 30 34.5 -0.5 0.5 units box fix ins all pour 500 0 4767548 vol 0.8 10 & region slab mol object rigid 3 fix 4 all enforce2d compute 1 all erotate/sphere compute Tsphere all temp/sphere thermo_style custom step atoms ke c_1 vol thermo_modify lost ignore norm no temp Tsphere compute_modify Tsphere dynamic/dof yes thermo 1000 #dump id all atom 100 tmp.dump #variable colors string & # "red green blue yellow white & # purple pink orange lime gray" #variable mol2 atom mol%10 #dump 2 all image 250 image.*.jpg v_mol2 type & # zoom 1.6 adiam 1.5 #dump_modify 2 pad 5 amap 0 10 sa 1 10 ${colors} #variable colors string & # "red green blue yellow white & # purple pink orange lime gray" #variable mol3 atom mol%10 #dump 3 all movie 250 movie.mpg v_mol3 type & # zoom 1.6 adiam 1.5 #dump_modify 3 pad 5 amap 0 10 sa 1 10 ${colors} run 25000