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https://github.com/ParticulateFlow/CFDEMcoupling-PFM.git
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65 lines
2.1 KiB
Plaintext
65 lines
2.1 KiB
Plaintext
# Fill granular particles into a cylinder
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echo both
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atom_style granular
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atom_modify map array
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communicate single vel yes
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boundary m m m
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newton off
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units si
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region reg block -0.015 0.015 -0.015 0.015 -0.001 0.0554 units box
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create_box 1 reg
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neighbor 0.001 bin
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neigh_modify delay 0
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#material properties required for granular pair styles
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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 9.81 vector 0.0 0.0 -1.0
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#walls
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fix zwalls1 all wall/gran model hertz tangential history primitive type 1 zplane 0.0
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fix zwalls2 all wall/gran model hertz tangential history primitive type 1 zplane 0.0553
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fix cylwalls all wall/gran model hertz tangential history primitive type 1 zcylinder 0.0138 0. 0.
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#cfd coupling
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#fix cfd all couple/cfd
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#particle insertion
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region bc cylinder z 0.0 0.0 0.012 0.02 0.03 units box
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fix pts1 all particletemplate/sphere 1 atom_type 1 density constant 200 radius constant 0.001
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fix pdd1 all particledistribution/discrete 1. 1 pts1 1.0
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fix ins all insert/pack seed 100001 distributiontemplate pdd1 vel constant 0. 0. -1. insert_every once overlapcheck yes all_in yes particles_in_region 1000 region bc
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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 1
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dump dmp all custom 1000 post/dump.liggghts_init id type x y z vx vy vz fx fy fz omegax omegay omegaz radius
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run 3000 upto
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