CFDEM®coupling - User Forum

When I use deltaT_CFD=2.5e-5s and deltaT_DEM=2.5e-7s, the case could run.
Part of the output info:

#cfd coupling
fix cfd all couple/cfd couple_every 100 mpi
nevery as specified in LIGGGHTS is overriden by calling external program (../cfd_datacoupling_mpi.cpp:77)
fix cfd2 all couple/cfd/force
restart ${restartstep} ../DEM/restart/liggghts_coupled.*
restart 800000 ../DEM/restart/liggghts_coupled.*

Hello,

since I am studying layer formation on membrane surfaces, I am looking for a simplified membrane model.
Up to now I found three of them:
1) one layer of spheres at a certain lattice
2) a rectangular (very thin) body inserted as granular
3) a simple wall

Hi,

Hello!

Hi everyone I have a problem compiling a cfdem case with my computer, I checked the files on another stronger computer and they're ok, but I think I'm missing something here. I'll appreciate any help of yours if you could tell me what is wrong.
mesh was built before - using old mesh
Decomposing case.
/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |

Hi
One question:
I found the difference of defination in totalPressureDrop.m of Tend in ErgunTestMPI_cgs with ErgunTestMPI_restart
In ErgunTestMPI_cgs is :
Tstart = 0;
Tend = t_sim(length(t_sim));
deltaU=(Uend-Ustart)/((Tend-Tstart)/timeStepSize);
-------------
In ErgunTestMPI_restart is :
Tstart = 0;
Tend = t_sim(length(t_sim))
Tend=0.1
deltaU=(Uend-Ustart)/((Tend-Tstart)/timeStepSize);
----------------

How to define these? What is difference in ErgunTeshMPI and ErgunTestMPI?

Hi Everybody,

I'm new to CFDEM. So please forgive if this is a silly issue in compiling CFDEM.
Has anyone tried compiling CFDEM with the latest version of OF?

I know these versions are not supported. But I'd love to have CFDEM work with these versions rather than install other versions.
I'm have problem when running cfdemCompCFDEMsrc. Please find below the log file details:

rm: cannot remove 'log/log_compile_results_src_success': No such file or directory
rm: cannot remove 'log/log_compile_results_src_fail': No such file or directory

I am trying to run a case with a lot of particles. Approximately, there will be (around 6,658,051) particles in the simulation domain.

My simulation geometry visual is attached.

I have the following error message: