CFDEM®coupling - User Forum

Hi guys,

I have a compilation problem while trying to install CFDEM on mac OS X 10.7.
I installed OpenFoam 2.1.1 and LIGGGHTS. The output of cfdemSysTest looks good to me:

*******************
system settings:
*******************
CFDEM_VERSION=PUBLIC
couple to OF_VERSION=2.1.1
compile option=Opt

Hi, everybody,
I am trying to use the mesh/surface/stress/servo command of liggghts to realize a constant-stress wall in a CFDEM case. I know that when establishing case using liggghts solely，the servo wall works fine. But if I want to use this command in a two-phase system including fluid and particles, does it consider the pressure which is induced by the fluid phase when adjusting the stress? Could anyone help me?~~

Thanks !

Dear all,

I installed CFD-DEM. After Compiling LIGGGHTS and CFDEM coupling, it gave:
"Note: the list of utilities compiled might be incomplete.
please check /nishome/fengxian/CFDEM/CFDEMcoupling-PUBLIC-2.1.x/applications/utilities for more utilities available"

Is this a problem?

Thanks and Regards.

Fengxian

Hi, Chris and Alice,

I might find a bug in virtualMassForce model.

1. when a particle is inserted, UrelOld is always some random number, e.g. vector(1,1,1), because there is no previous Ur. So the first calculation is wrong with it.

2. when the particle moves from one processor to another, UrelOld is wrong again, because the new processor has no record of previous UrelOld.

Hi,
Install LIGGGHTS and CFDEMcoupling keep failing.
I tried to install it with ubuntuVTK and with fedora. In both cases running the 'lmp' file shows that there are problems.

Ubuntu 13.10 and OpenFoam 2.2.1 are installed on my system and work.

Making lmp_ubuntuVTK gives :

Dear all

I have downloaded and installed OF and Ligghts. I did everyting following the guideline. it seems that the compilation works out, but the turotials can not be run properly.

First, when I try "cfdemTestTUT" and get error as

"cannot remove `cfdemSolverPiso_settlingTestMPI.eps'"

Then I go to the CFD forlder and put "mpirun -np 2 cfdemSolverPiso -parallel"

and get the following errors:

Dear all

I am also trying to compile CFDEM with OF 2.2.2.

However, when I tried to run "cfdemCompLIG", which is supposed to compile LIGGGHTS only, my computer was frozen. I am not sure if that error was because OF 2.2.2. If that is the case I will re-install previous version of OF.

By the way, in that guideline of installation, the error of setting environmental variables was very frustrating. I am not sure if I did the right correction on this. Could anyone post the right version?

Many thanks

Hello every body,

I want to start working with liggghts and I do not know how to install it with openFOAM 2.2. Would you please guide me to the installation page?

Thank you

Hi CFD-DEM developers,

as the fluid force acting on immersed body is:
f = - grad(P) + nu_ * laplacian(U)

I found that the last line in the following codes seems having a written error:
volVectorField h = rho_*(nufField*fvc::laplacian(U_)-fvc::grad(p_));

as mu = nu * rho

Hi,

Is it there a way to install and run LIGGGHTS and CFDEMCoupling with OpenFoam 2.2.2 ?

Best,
zivg