CFDEM®coupling - User Forum

Hello everybody
When using CFDEM, I continuously encounter errors, and the simulation cannot run properly. Below is the error message.

“Selecting momCoupleModel: implicitCouple
Construct implicitCouple model...
ERROR on proc 6: Illegal length used in CfdDatacouplingMPI::allocate_external (../cfd_datacoupling_mpi.cpp:160)”

Please help me.
Thanks

Hello,

Why is there a file named addSource in the zero folder of CFD?
Its unit is, if I'm not wrong, Pa/s.
Is there anything related to some equation? I could find any explanation for that.

Thank you very much.

Hello everyone,

i have CFD-DEM simulation case for the mixture of ingredients in salami production. I'm kind of new to CFDEMCoupling software. Is it somehow possible to simulate the water diffusion into the particles which present minced meat? Is there already a solver which would do similar stuff like that?

I would appreciate every hint about how can that be done.

Best Regards.

I found the code related to Superquadric in cfdemSolverIB, as follows:

#include "cfdemCloudIB.H"
#if defined(superquadrics_flag)
#include "cfdemCloudIBSuperquadric.H"
#endif

It is obvious that the solver is considering the simulation of Superquadric, but "cfdemCloudIBSuperquadric.H" does not exist in src. How does this work? How can I simulate Superquadric in CFDEM?

best wish

Hello
I am interested in using the PFM version of the cfdem coupled model. However, I need some help with the compilation process and changes that are required to be made in the bashrc file.

Testing cyclic conditions for cfdemsolverIB. No errors, but results are unphysical and consistent with cyclic CFD and DEM, but non periodic CFD/DEM coupling. Minimal example and plot included.

Hello CFDEM,

I am using a multi-sphere model and want to fix the multi-sphere model with fix freeze, but this will cause the multi-sphere to disappear. Is there any way to hold the multi-sphere model in place?

thank you

Dear all,

I am trying to compile CFDEMcoupling on Ubuntu 18.04 hosted on wsl. I am following the instructions here: https://www.cfdem.com/media/CFDEM/docu/CFDEMcoupling_Manual.html#install...

Hi CFDEM forum,

New here, first post. Hence, naive question:

I used sovlerIB to simulate a multi-sphere model. The void fraction model IB causes the particles to move crazy, and the particles will be suspended on top. However, using the bigparticle void fraction model, the simulation results are better. How to solve this problem?