CFDEM®coupling - User Forum

Be aware that LIGGGHTS 1.5.1 from the dev repo is currently not able to couple to CFDEM (there is a re-write underway)
Please use the latest mature version LIGGGHTS 1.5 from the git://cfdem.git.sourceforge.net/gitroot/cfdem/liggghts repo instead!

Christoph

Good morning,
I am trying to simulate the flow that is produced by Formula 1, and its interaction with particles that lays on the asphalt. Could anyone help me? Do you know if I could calculate it with this programm?

hi all,
im trying to simulate gas-solid fluidized bed with two types of different density particles. after giving 'mpirun -np 2 cfdemSolverPiso_shared -parallel' command im getting an error given below:

Executing input script '../DEM/in.insert_pack.'
ERROR: Could not open LIGGGHTS input script
--------------------------------------------------------------------------
MPI_ABORT was invoked on rank 0 in communicator MPI_COMM_WORLD
with error code 1.

NOTE: invoking MPI_ABORT causes Open MPI to kill all MPI processes.

Hi ,

I need to define a moving wall (web) in parallel directions. can any one please help me how to define motion in parallel directions?

Thanks,
Vajiheh

hi, when install the cfdem(openfoam2.1.0,git-liggghts), the follow error occured:

subModels/locateModel/engineSearch/engineSearch.C:64: error: no matching function for call to ‘Foam::meshSearch::meshSearch(const Foam::fvMesh&, Foam::Switch&)’
/home/zp/OpenFOAM/OpenFOAM-2.1.0/src/meshTools/lnInclude/meshSearch.H:180: note: candidates are: Foam::meshSearch::meshSearch(const Foam::polyMesh&, const Foam::treeBoundBox&, Foam::polyMesh::cellRepresentation)

Hi!

I would like to try cfdem in order to model geotechnical problems, such as triaxial shear tests or oedometer tests. I already tried to compile the software twice, but I always get error messages. Particularly, when I type "which liggghts" after install liggghts, nothing happens, when I try to compile src I get a message:

Make/linuxGccDPOpt/twoWayMPI.o
In file included from subModels/dataExchangeModel/twoWayMPI/twoWayMPI.C:30:0:
subModels/dataExchangeModel/twoWayMPI/twoWayMPI.H:47:62: fatal error: lammps.h: No such file or directory
compilation terminated.

Hi,

Is there a step-by-step tutorial for a simple CFD-DEM test case?

Best regards,
Jan

sderakhshani@ubuntu:~/OpenFOAM/sderakhshani-1.7.x/src/lagrangian/cfdemParticle$ rmdepall removing all .dep files ... sderakhshani@ubuntu:~/OpenFOAM/sderakhshani-1.7.x/src/lagrangian/cfdemParticle$ wclean sderakhshani@ubuntu:~/OpenFOAM/sderakhshani-1.7.x/src/lagrangian/cfdemParticle$ wmake libso Making dependency list for source file cfdemCloud/cfdemCloud.C Making dependency list for source file derived/cfdemCloudIB/cfdemCloudIB.C could not open file RASModel.H for source file derived/cfdemCloudIB/cfdemCloudIB.C could not open file RASModel.H for source file cfdemCloud/cfdemCloud.C Making depe

Dear all,

I currently do NOT recommend to run CFDEM with OF 2.1.x as there is an incompatibility with the engineSearch model.
This is gonna be fixed for future CFDEM versions.

see forum post for quick fix if you really want to use 2.1.x:
node/680#comment-2153

Cheers,
Chris

hi Alice,

from the installation instruction of CFDEM, OpenFoam 1.7.x (Source Pack) and Ligghts 1.5 (Source Pack) need to be compiled at first, then CFDEM can be compiled successfully.

I have installed Ubuntu 10.04 LTS, and I was wondering:

1. Can we just simply install the lastest Version of OpenFoam and LIGGGHTS from Deb or RPM PACK, and then compile the CFDEM?

2. If not possible, can we compile the source pack of OpenFoam 2.1 and LIGGGHTS 1.5, and then CFDEM 2.3.0; or CFDEM is only based on OpenFoam 1.7.x?