CFDEM®coupling - User Forum

Hi ALL ! I was just wondering if some of you could help me out? Basically I want to run CFDEM on a cluster (runs on CentOS, I do not have root permission). OpenFoam finnaly runs. Trying to install CFDEM It took me a while to realize that I need to change the paths in the . bashrc file. However, when I do the cfdemSysTest I get something that open mpi is not there "The Open MPI wrapper compiler was unable to find the specified compiler
no in your PATH" ??? What am I doing wrong and ideas ??? Do I need to add something to the bashrc again ??? THANK YOU !!!

Hi everyone,

After using CFDEMcoupling for a while,
i'm curious
whether the DEMforce_ passed to DEM is added to particles (for pure DEM collision calculation) for only one DEM step or all steps during coupling interval (with the same value)?

best regards,
Mq

Hi
I study the CFDEM coupling by reading Manual.pdf, i find "tutorial cases " in Manual,but i can't find. I also see some examples and application on the website,but i cannot find the script or introduction about it, who can provide me some introduction or script. Thanks!
regards!
Tang

Hello everybody,

I'm not an experienced user with Ubuntu nor any related OS. Even though, I've been able to successfully install OpenFOAM 2.3.x with ThirdParty 2.3.x in my laptop (OS Ubuntu 14.04 LTS) and I've been trying to install LIGGGHTS & CFDEM, unsucessfully. I've been following the guide that's available in this website.

I'm quite sure that the OF installation process went fine because any error has been displayed so far and I was able to do a tutorial. The problem appears when I try to compile both programs (LIGGGHTS & CFDEM).

Hello All,

I am writing a code for compressible CFDEM, and now I am on the turbulence part, normally voidfraction is accounted for even in turbulence equations (for example in the k-epsilon equation) but clearly openFoam does not. So my question is do cfdem solvers account for the void fraction correction or not?

thanks as always for your help and patience,

Hello Dear all
I need to write the solver for coupling interFoam and liggghts. Can I replace the CFD files of cfdemSolverPiso with the files of interfoam solver and change the code of cfdemSolverPiso?
Please let me know the stages of writing new solver.

Thanks
Elham

Hi !!

I successfully ran two tutorial cases (erguntestMPI and settlingtestmpi); the coupling works flawlessly!! However, I encountered the following errors when I ran the packedbedtemp and twospheresglowinski tutorial:

For the cfdemsolverpisoscalar - packedbedtemp:

Hi,

I have been trying to compile CFDEM 2.7.1 on my Ubuntu 12.04 machine.

I have successfully installed OpenFoam 2.3.x, demonstrated by running the tutorial cavity. I have also successfully installed Liggghts 3.0.3, demonstrated by running the tutorial conveyor. Liggghts was installed with the cfdemCompLIG command to compile as a library. Prior to this I ran cfdemSysTest command which produced the following results:

Hi All,

I went through the CFDEM coupling pdf guide, and I followed the instructions in an attempt to compile LIGGGHTS(R) and CFDEM(R) compiling. However, prior to that the "cfdemSysTest" command didn't work, instead the following message pops up:

If 'cfdemSysTest' is not a typo you can run the following command to lookup the package that contains the binary:
command-not-found cfdemSysTest
-bash: cfdemSysTest: command not found

I have OpenFoam 2.3.x. installed, and the latest cfdem package straight from github.

Hello Dear users
Good time.
I am a new user of CFDEM project. I am going to use CFDEM for simulation of sediment transport.
I have some questions. Please help me.

- What is the CFDEM solver for simulation of sediment transport?
- Can I use one of the exiting examples in CFDEM tutorial and change it?
- How do I mesh in CFD and DEM sections? Does the site contain particles is defined and mesh is given in CFD section? OR does the site contain fluid is defined and mesh is given in DEM section?
- How do I select the number of particles in DEM?