CFDEM®coupling - User Forum

Dear all,

there have been some issues with compiling cfdem with version 2.0.0 and 2.0.x.

It was tested and worked with 2.0.x.

With 2.0.0 errors ( MPI::Win::Free() ) might occur.

Please use the version 2.0.x and not the pre-compiled versions.

I'll do another testing and let you know as soon as everything has compiled fine.

Cheers,
Chris

Hi All,
I am looking for some directions about how to increase the
number of particles in the tutorials and how to setup a
case for running with 16 physical computer nodes.
Any clue is very welcome.
Thanks,
Alex
P.S. Is there a old case with liquid fluidized bed using "file coupling" ?

Hi,
When I run coupled cfd-dem simulation, there is some problem importing the stl file.
---------------------
Importing STL file 'geotest.STL'
ERROR on proc 0: Cannot open stl file geotest.STL.
----------------------

But when I run liggghts only, there is not any problem. I found from previous post that I should try absolute path. May I know how does it work? I tried :
fix cad all mesh/gran $Absolute_path/ geotest.STL 1 1.0 0.0 0.0 0.0 0.0 0.0 0.0
then there is error message:
ERROR on proc 0: Substitution for illegal variable

Thanks!

Hi,

I successfully compiled cfdemParticle, but when I compile the solver, I got an error like this:

/usr/bin/ld cannot find -llangrangianCFDEM

Does anyone has an idea?

Thanks.

rq

Hi,
I get the following output when running decomposePar. Would that mean something important ?
Another question : In the ErgunTestMPI/DEM/post I get just the dump.liggghts_restart . Is that OK ?
And the last one : Is there a way of showing particles and fluids VTKs at the same time in paraview ?
Thanks a lot. Alex
amscosta@amscosta-desktop:~/OpenFOAM/amscosta-1.7.x/run/cfdemSolverPiso_shared/ErgunTestMPI/CFD$ decomposePar
/*---------------------------------------------------------------------------*\
| ========= | |

Hi Users,
I am trying to compile CFDEM 2.0.1 release, but could not succeed. First it gives me errors that its missing lmp.h and ......... that I have figured it out by setting the variable in cfdemParticle/etc/bashrc. It gives me the following error at the end.
/usr/lib64/gcc/x86_64-suse-linux/4.4/../../../../x86_64-suse-linux/bin/ld: cannot find -llmp_fedora
collect2: ld returned 1 exit status

Hi,
Thanks for the great job in the new installation guide.
I manage to made the majority of the steps.
However I have some remaining issues :
I - During install cfdem version beta 2.0
compile src step,
The following message is shown in the beginning of the compiling :
could not open file RASModel.H for source file cfdemCloud/cfdemCloud.C
(although the compilation is completed).

II - During the run cfdem testcase, last step (I am using pizza-19May11):

amscosta@amscosta-desktop:~/OpenFOAM/amscosta-1.7.x/run/cfdemSolverPiso_shared/settlingTestMPI/DEM$ pizza -f pizzaScriptInit

Hi cfdemers,

Has anyone developed the added mass force?

Since du/dt (for fluid phase) has to be calculated, I wonder whether uprev and unext should be calculated and stored as well.

Do you have any better idea? Thanks in advance.

rq

Hi all,

I found the default density is 1. Could anyone tell me how to change it to 1000 (for water)?

Thanks.

rq

Hi all

Just wondering if it might be possible to couple Liggghts and Fluent. I'm not really familiar with either package and most of my experience is in running simple models in CFX. I have managed to get Liggghts setup which I'm proud of since I'm a complete Linux newbie. My university has a lot of Fluent die-hards and I get asked this question a bit.

Regards T