I am using insert/stream for particle insertion. But for some reason, particles do not come out of the region created by specifying extrusion length. And, due to this, I am not getting streaming flow of particles.
here is my code:
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# Particle insertion
fix ins_mesh all mesh/surface file mesh/insertion.stl type 1 scale 0.001 #move 0 0 0.02
group nve_group region reg
fix pts all particletemplate/sphere 15485863 atom_type 1 density constant 2500 radius constant 0.001
fix pdd all particledistribution/discrete 15485867 1 pts 1.0
fix ins nve_group insert/stream seed 123457 distributiontemplate pdd nparticles INF vel constant 0. 0. -10. particlerate 1000000 overlapcheck yes insertion_face ins_mesh extrude_length 0.02
#apply nve integration to all particles that are inserted as single particles
fix integr nve_group nve/sphere
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I am stuck on this problem since several days. Any help is much appreciated!
Thank you.
SHUBHAM AGARWAL | Fri, 07/16/2021 - 23:11
More details
Hello
I am unsure whether I got the essence of your problem, it will be helpful if you share more details about the problem you are facing. However, the following are some checks you can perform:
1- Check whether the CAD face normal aligns with associated direction in LIGGGHTS. For example if face normal in CAD is in Z direction however you want to extude along 'X' in LIGGGHTS.
2- Check the simulation box size and boundary conditions: The Simulation box should be big enough to incorporate the extruded size. Also if fou have specified 'f f f' type boundary, it may show an error.
Cheers :)