# Pour granular particles into chute container, then induce flow echo both atom_style granular atom_modify map array communicate single vel yes boundary m m m newton off units si processors 2 1 1 #read the restart file read_restart ../DEM/liggghts.restartCFDEM #do not do this here, the simulation box is in the restart file! #region reg block -0.015 0.015 -0.015 0.015 -0.001 0.0554 units box #create_box 1 reg neighbor 0.0005 bin neigh_modify delay 0 #Material properties required for new pair styles fix m1 all property/global youngsModulus peratomtype 5.e6 fix m2 all property/global poissonsRatio peratomtype 0.45 fix m3 all property/global coefficientRestitution peratomtypepair 1 0.3 fix m4 all property/global coefficientFriction peratomtypepair 1 0.5 #pair style pair_style gran/hertz/history #Hertzian without cohesion pair_coeff * * #timestep, gravity timestep 0.00001 fix gravi all gravity 9.81 vector 0.0 0.0 -1.0 #walls #walls fix zwalls1 all wall/gran/hertz/history primitive type 1 zplane 0.0 fix zwalls2 all wall/gran/hertz/history primitive type 1 zplane 0.0553 fix cylwalls all wall/gran/hertz/history primitive type 1 zcylinder 0.01385 0. 0. tangential_damping off # change the particles density set group all density 2000 #cfd coupling fix cfd all couple/cfd couple_every 100 mpi fix cfd2 all couple/cfd/force #apply nve integration to all particles that are inserted as single particles fix integr all nve/sphere #center of mass compute centerOfMass all com #compute total dragforce #compute dragtotal all reduce sum f_dragforce[1] f_dragforce[2] f_dragforce[3] #screen output compute 1 all erotate/sphere thermo_style custom step atoms ke c_1 vol c_centerOfMass[3] #c_dragtotal[1] c_dragtotal[2] c_dragtotal[3] thermo 10 thermo_modify lost ignore norm no compute_modify thermo_temp dynamic yes #insert the first particles so that dump is not empty dump myDump all stl 1 post/dump_*.stl #run 1 dump dmp all custom 5000 ../DEM/post/dump.liggghts_restart id type type x y z ix iy iz vx vy vz fx fy fz omegax omegay omegaz radius undump myDump run 1