CFDEM®coupling - User Forum

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?

Hi，I'm using soverIB. When the particle crosses the cyclic boundary and returns from the entrance, it jumps and moves at high speed.

What is the reason for this and how to solve it?

Hi everyone,

I am currently using the CFDEM coupling, and trying to figure out how to solve a steady state simulation first and use it as initial conditions, or if there is another way to start the case, solve the CFD first, and then start the coupling. I don't find the related command for 'liggghts command' or 'couplingproperties' in the guide

I tried the 'mapfield' command, but the Ksl and other initial files of the particle may lead to an error. I don't know what to do now.

When will the resolvable hyperquadric solver be added to the public version of CFDEM? In “Modelling superquadric particles in DEM and CFD-DEM: implementation, validation and application in an open-source” In this paper, the framework mentions the existing superquadric solver (cfdemSolverHFDIBM), which will be added to CFDEM in 2018.