CFDEM®coupling - User Forum

Hi Christoph,

I am testing a simple CFD-DEM case of cyclone separator using cfdemSolverPiso. Before doing the coupling of CFD-DEM, CFD and DEM simulation were tested separately and worked fine. However, when performing CFD-DEM coupling, it seems that the same command " fix insert/stream " in DEM does not work with cfdemPisoSolver.

CFD test:

DEM test:

Hi!!

I have a problem when using "reconstructPar" in cfdem coupling
My versions are:
CFDEMcoupling version: cfdem-2.5.5
LIGGGHTS version : 2.3.6
OF version: 2.2.0
O.S : Version 12.04 (precise) 64 bits
Cores : Intel® Xeon(R) CPU E5620 @ 2.40GHz × 8

the error message is as follows:
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
Reconstructing point fields

No point fields

Reconstructing lagrangian fields for cloud particleCloud

Hi I am a regular user of CFDEM softwares OpnFOAM and LIGGGHTS.
I want to simulate channel flow for which I am coupling channel flow tutorial in openfoam with liggghts ( after modifying some parameters)
I am getting following error which I don't understand why.

Create time

Create mesh for time = 0

Reading field p

Reading physical velocity field U
Note: only if voidfraction at boundary is 1, U is superficial velocity!!!

Reading momentum exchange field Ksl

Reading voidfraction field voidfraction = (Vgas/Vparticle)

Hi All,

A PhD student is needed in the area of coupling of computational fluid
mechanics and discrete element method on particle movement, heating, liquid spray,
coating and film. Support includes salary, tuition, health insurance, etc. Interested parties should send a complete resume to Dr. Haifang Wen (Haifang_wen@wsu.edu)

Thanks!

Kun

Hi readers:

I made a clean install on openSUSE 12.3 managed to compile without errors for OpenFOAM and LIGGGHTS but many times a try after I execute cfdemCompCFDEM I have at the end (shown as snipped below):

Hi!
I have a little trouble with the command "bond_type harmonic"
if I use this command (bond_type harmonic) under LIGGGHTS works without any problem,
when cfdem coupling, I got this message:
"
Courant Number mean: 0.00147829 max: 7.37258
Starting up LIGGGHTS
Executing command: 'run 10 pre no post no'
run 10 pre no post no
Step Atoms KinEng 1 Volume
91101 61 0.18215281 0.00059623725 0.00011248163
ERROR on proc 7: Bond atoms 53 54 missing on proc 7 at step 91104 (neigh_bond.cpp:60)
"

Hi all,

Hi

I am a PHD student in Iran and I want to write my proposal for my PHD. I want to use the CFDEM for solving a problem about air pollution (air and dust interaction). I have not defined my problem yet and I want you to help me in defining my PHD thesis.

Regards

Hi all,

Could anyone kindly tell me what the keyword 'verbous' (appeared in the couplingProperties file of ErgunTest case, v. 2.5.5) does for coupling simulations?

BR!

Lei

Hi everyone,