Particle Settling

Submitted by joaopfc on Sun, 06/03/2018 - 00:37

Hello, Ive been working on a very simple case that I intend to use to measure the angle of repose of a particle heap. The simulation runs fine, however, I cant get the coupling to work for the particle insertion/settling, its only using LIGGGHTS for it, which I think might influence the initial height of the heap (before the stopper is pulled). Once the stopper is removed and the heap starts collapsing, the coupling kicks in. Ive attached the case if its any help.
Thanks in advance

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Binary Data aor_.tar_.gz1.96 MB

joaopfc | Thu, 06/07/2018 - 00:28

Hello all

So I read through the log and found this right after the program read the coupling settings (I have the in.LIGGGHTS_run set to do the coupling every 100 DEM steps):

couple_every as specified in LIGGGHTS is overriden by calling external program (../fix_cfd_coupling.cpp:114)

I believe this might be the source of my problem, but i cant seem to find where this external program that is overriding the couple_every setting is being called from. I checked and ran the tutorials (the PostProc cylinder and the ergun restart test) but couldnt figure out what im doing wrong. Has anyone had this issue before?
Thanks in advance

Daniel Queteschiner | Wed, 06/13/2018 - 12:26

The "external program" is CFDEMcoupling and the coupling interval is actually defined in the couplingProperties file by an entry such as
couplingInterval 100;