77 lines
2.6 KiB
Plaintext
77 lines
2.6 KiB
Plaintext
echo both
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log ../DEM/log.liggghts
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thermo_log ../DEM/post/thermo.txt
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atom_style granular
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atom_modify map array sort 0 0
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communicate single vel yes
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boundary f f f
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newton off
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units si
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region reg block 0.0 0.1 0.0 0.1 0.0 1.0 units box
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create_box 1 reg
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neighbor 0.003 bin
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neigh_modify delay 0 binsize 0.01
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# material properties required for granular pair style
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fix m1 all property/global youngsModulus peratomtype 5.e6
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fix m2 all property/global poissonsRatio peratomtype 0.45
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fix m3 all property/global coefficientRestitution peratomtypepair 1 0.3
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fix m4 all property/global coefficientFriction peratomtypepair 1 0.5
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# pair style
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pair_style gran model hertz tangential history
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pair_coeff * *
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# timestep, gravity
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timestep 0.00001
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fix gravi all gravity 0.0 vector 0.0 0.0 -1.0
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# walls
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fix xwalls1 all wall/gran model hertz tangential history primitive type 1 xplane 0.0
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fix xwalls2 all wall/gran model hertz tangential history primitive type 1 xplane 0.1
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fix ywalls1 all wall/gran model hertz tangential history primitive type 1 yplane 0.0
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fix ywalls2 all wall/gran model hertz tangential history primitive type 1 yplane 0.1
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fix zwalls1 all wall/gran model hertz tangential history primitive type 1 zplane 0.01
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# create particles
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region bc block 0.0 0.1 0.0 0.1 0.53 1.0 units box
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fix pts1 all particletemplate/sphere 15485863 atom_type 1 density constant 3000 radius constant 0.0015
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fix pdd1 all particledistribution/discrete 15485867 1 pts1 1.0
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fix ins all insert/pack seed 32452843 distributiontemplate pdd1 vel constant 0. 0. -0.3 &
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insert_every once overlapcheck yes all_in yes particles_in_region 1000 region bc
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# cfd coupling
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fix cfd1 all couple/cfd couple_every 100 mpi
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fix cfd2 all couple/cfd/force
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variable vx equal vx[1]
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variable vy equal vy[1]
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variable vz equal vz[1]
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variable time equal step*dt
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fix extra all print 100 "${time} ${vx} ${vy} ${vz}" file ../DEM/post/velocity.txt title "#" screen no
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# apply nve integration to all particles that are inserted as single particles
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fix integr all nve/sphere
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# screen output
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compute rke all erotate/sphere
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thermo_style custom step atoms ke c_rke vol
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thermo 1000
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thermo_modify lost ignore norm no
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compute_modify thermo_temp dynamic yes
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# insert the first particles so that dump is not empty
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run 0
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dump dmp all custom 1000 ../DEM/post/dump.liggghts_run id type x y z vx vy vz &
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fx fy fz omegax omegay omegaz radius
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run 0 upto
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