CFDEM®coupling - User Forum

This is a forum dedicated to CFDEM®coupling using the LIGGGHTS® DEM code and OpenSource CFD.

Tuning testcase ErgunTestMPI

Submitted by Mallin on Fri, 04/06/2012 - 09:46

Hi,
I recently noted that the file blockMeshDict which is used for rearranging the mesh in CFD part is missing from the directory where it should be placed cfdemSolverPisoCase_shared/ErgunTestMPI/CFD/constant/polyMesh .
There are only mesh files that are already built (and probably refined mesh files) there. Was it done intentionally or is it just lost accidentally? And I'll appreciate if somebody can supply me with this file.
Thanks,
Andrew

library_cfd_coupling.h

Submitted by Zhenli on Fri, 03/30/2012 - 12:40

Dear all,

i am trying to compile the CFDEM, i did step by step after
setup_LIGGGHTS__OpenFoamR_CFDEM_2p0_on_Ubuntu1004_24052011.txt

but by compiling of cthe cfdemparticle, wmake libso
i still got such a fatal error, library_cfd_coupling.h not found, not a directory or file. I checked the .bashrc file, i think, i should give the right one, i am not sure what could be a problem is it?

could any one help me for this kinda error?
Thanks a lot!

cheers!

Zhen

heatFlux item in controdict of packedBed case

skyopener's picture
Submitted by skyopener on Mon, 03/26/2012 - 14:21

hello developer,
I am interested in the function item heatFlux in the controdict file in the folder - cfdemSolverPisoScalarCase_shared/packedBedTemp/CFD/system.
======================================================
libs ("libOpenFOAM.so""libgroovyBC.so""libsimpleFunctionObjects.so""libsimpleSwakFunctionObjects.so""libswakFunctionObjects.so");
functions
(

// simpleFunctionObjects
heatFlux
{
type patchHeatFlux;
functionObjectLibs
(
"libsimpleFunctionObjects.so"
);
verbose true;
patches
(
inlet
outlet

Stones

Submitted by aharon.sanchez on Tue, 03/20/2012 - 10:58

Hello,

I am Aharón Sánchez, and I have a doubt. I want to modelize the behaviour of a group of stones (near 63 mm of diameter) when some vibrations are induced in them. Can anyone tell me if this is possible?
How can I model vibrations?

Restarting CFD-DEM simulations

Submitted by Somnath on Wed, 03/14/2012 - 20:58

Hello,

Can I restart CFD-DEM simulations from the latest Time (by simply changing controlDict)?

My restarted simulations run into an error immediately even though the simulations run correctly if started from time 0. I am also saving the liggghts restart files and reading from the correct restart file when I am trying to restart. Has anyone faced similar problems or knows how to restart a simulation?

cfdem compilation error on OpenSUSE 12.1

Submitted by phsieh2005 on Sun, 03/04/2012 - 16:42

Dear cfdem experts,

I am trying to compile the latest cfdem on OpenSUSE 12.1 (64 bit) and ran into an error:
----------------------------------------
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.
make: *** [Make/linux64Gcc46DPOpt/twoWayMPI.o] Error 1
make: *** Waiting for unfinished jobs....

keyword div((viscousTerm*dev(grad(U).T())))

cgoniva's picture
Submitted by cgoniva on Fri, 03/02/2012 - 12:01

Dear every one,

I will be appreciate if anyone tell me why the following error is produced after first simulation on liggghts.

Thanks in advance

Cheers,
Ebrahim

_______________________________________________________________________________________________________

couplingStepInterval = 1
solving volume averaged Navier Stokes equations of type B
Starting time loop
Time = 0.001
Courant Number mean: 1.51515e-05 max: 0.00454545
- evolve()

Starting up LIGGGHTS

Executing command: 'run 100 '
run 100 Setting up run ...
Memory usage per processor = 13.3038 Mbytes

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