CFDEM®coupling - User Forum

Good morning, I am very interested in CFDEMcoupling for research purposes. I have a simple question. Which is the last OpenFOAM version (ESI Group) that can be used for compiling with the latest CFDEMcoupling 3.8.0? Apparently, it is the very old v1612+ (14 versions have been released after this). Cannot be compiled on newer OpenFOAM versions? A lot of feature have been added in newer versions. Plus, it is not easy to compile in newer Ubuntu releases (e.g., 20.04 LTS, 22.04 LTS). Thanks in advance for your reply.

Dear all,

We defined a group in LiggghtsCommand) , and then plan to print the total number of atoms in the group to a file.

executeProps0
{
command
(
group dele variable melt // melt was defined in liggghts
variable num equal count(dele)
print $num append noBlanks nummelt dot txt
);
runFirst off;
runLast off;
runEveryCouplingStep 1;
runEveryWriteStep off;
verbose;
}

I was installing CFDEM and experience this error:

meshe@meshe:~$ cfdemCompCFDEMall
copying patch files for LIGGGHTS if available
cp: cannot stat '/home/meshe/CFDEM/CFDEMcoupling-PUBLIC-5.x/src/LIGGGHTSpatch/*': No such file or directory

Hi all,

I was following this document and everything went as expected until the .runMe.sh step
https://www.engineerdo.com/wp-content/uploads/2021/02/Installation_CFDEM...
I am trying to install this on my university computer to run a few Sims.
I see the following error; please give me a few hints on how I could solve this problem.

It seems the currently recommended OpenFoam version for compiling with the latest CFDEMcoupling 3.8.0 is version 5.x. However, this is a very old OpenFoam version, and I wonder if there are any reasons why the newer versions such as 7 or 8 cannot be used. Is there any experience on coupling with newer OpenFoam versions?

I have followed this video for CFDEM installation
https://www.youtube.com/watch?v=V6VaVE6VB0g

I am not able to run this command cfdemCompCFDEMall

Hello everyone,

I am beginer in CFD-DEM. I want to simulate the movement of soil particles under fluid flow.

Firstly, I generated the flow channel using Blender. Next, I used HYLEX-OS for CFD. After that, I used LIGGGHTS to create the particles. I have a problem when generating a flatbed.

Please help me solve it, if you have documents related to this problem, please share them with me.

I also attached my file below, if you have time, please have a look.

Thank you so much.

Best regards.

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.