CFDEM®coupling - User Forum

Hello,

I modified blockMeshDict and in.liggghts_init files of ErgunTestMPI case to enhance my understanding.

In CFD directory blockMesh runs good, but in DEM directory when I run the in.liggghts_init file using liggghts excutable, it shows an error-

pair_style gran/hertz/history #Hertzian without cohesion
ERROR: Illegal pair_style command

How can i overcome this error.

Please help me out.

Thanks
Manjura

Hi,

after getting latest version CFDEM via git

sudo git clone https://github.com/CFDEMproject/CFDEMcoupling-PUBLIC.git

I changed to some Make-root dirs, run rmdepall, wclean and wmake but all compiling sessions broke by missing cfdemCloudIB.H
Is this a Ubuntu 13.04 specific error or is cfdemCloudIB.H missing in the git clone?

Regards

Paul

/home/kbuntu/CFDEM/kbuntu-PUBLIC-2.2.0/run/ErgunTestMPI/parCFDDEMrun.sh: line 13: /etc/functions.sh: No such file or directory
/home/kbuntu/CFDEM/kbuntu-PUBLIC-2.2.0/run/ErgunTestMPI/parCFDDEMrun.sh: line 31: parCFDDEMrun: command not found
rm: cannot remove `cfdemSolverPiso_ErgunTestMPI.eps': No such file or directory
/home/kbuntu/CFDEM/kbuntu-PUBLIC-2.2.0/run/ErgunTestMPI/parCFDDEMrun.sh: line 46: octave: command not found

Hi,
I am trying to set up my first (modified) CFDEM case inspired by the
ErgunTestMPI case.

My setup is a square box sheared on top with a velocity inlet, a outlet
and periodic conditions in lateral direction (top moving wall, bottom fixed)

I can run the case without problems in pisoFoam.

For the particles I insert a few (3-5) particles in the center of the box
similar to the in_init function of the ErgunTestMPI

I also took the coupling parameters from this case.

I can run the init function in liggghts

Hi

I am not sure if this is the cause of the problem, but a few days ago I reduced my CFD cell size to be about 3 particle diameters. The simulation runs fine in parallel (12 cores), but when I run reconstructPar, I an error when it tries to reconstruct the lagrangian fields (e.g. caseDir/processor0/0.1/lagrangian/). ReconstructPar still runs fine with my original mesh.

I couldn't find any obvious fix after searching online, so I have posted the last bit of the screen output below to see if any one has had this problem as well. I am running OF v2.1.1. and CFDEM v2.5.3.

hi, I am a new learner of CFDEM. there is a question puzzling me a lot. I want to do some 2D simulation via CFDEM, such as one-dimensional consolidation. But I fail and the error message indicates that :
ERROR: Could not create 3d grid of processors (procmap.cpp:65)

It seems that parCFDEMrun can only handle 3D problems,right? Or there is some tips for run 2D problems.

Could anybody help me??

thanks~~~~~~!!!

Hi CFDEMers,

As in the subject, is there a simple way to shut off the collision, i.e. allow the particles to overlap?

Thanks.
rq

Hi all,
I compile the CFDEM and LIGGGHTS according with "githubAccess_public.pdf" , this seems works well, but in output show many warnings, such as [-Wunused-parameter] in both cases (cfdemCompLIG , cfdemCompCFDEM).

When I try run any example, the next error appears (in cfdemSolverPiso ):

Hi folks,

Hi,
I am a new learner of CFDEM,I tried the tutorial example of twospheresglowinskiMPI, and I have delete the"rm -r $casePath/CFD/0.*",but there are still no CFD writing file of 0.*, I want to know why~~~