CFDEM®coupling - User Forum

Hello,

I'm trying to solve the heat transfer problem for a static particle bed with interstitial air. The particles are bigger than the mesh used for the CFD solution. From the source code, I see that the heat exchange field (EuField in cfdemSolverPisoScalar.C or the Tsource in cfdemSolverPisoScalar.C) is just being added to the CFD cells that coincide with particle centroids. But Tsource in all the other cells that also occupy this particle is being taken as zero.

I am wondering why not use a smoothing model to distribute this Tsource?

Hello everybody,

This is a simple question about the engineSearchIB used for cfdemSolverIB. When dealing with a large number of resolved particles, the findCell() function takes a large amount of time. There is the option to use treeSearch but it has been recommended to keep the switch off for resolved CFD-DEM. Is there any possible reason why treeSearch cannot be used in cfdemSolverIB?

Bests,
Achuth

Hi I want to do cfd analysis of a pebble bed reactor for this I need random packing of spheres in a rectangular canister. For this I performed a Liggghts simulation to create a particle bed I have the particle position text file. How can I use this to create a Cad model . I want to use that in open foam . From some where I read that I have to write a c++ code for this .how can I do that Can somebody help?

Dear CFDEM experts,

Hi Everyone,

Hi, everyone!
After cfdemCompCFDEMall, the followings show up. Could anyone tell me what I should do? Thank you!

[lih2@tc6000 Documents]$ cfdemCompCFDEMall
copying patch files for LIGGGHTS if available
cp: cannot stat \u2018/public/home/lih2/Documents/CFDEM/CFDEMcoupling-PUBLIC-5.0/src/LIGGGHTSpatch/*\u2019: No such file or directory

Dear users
I try to make the MultiscaleSolver which needs LIGGHTS-2.4.4 and OPENFOAM-2.1.1. I got MultiscaleSolver package from:
" http://www.thermalfluidscentral.org/e-resources/resource.php?id=258 "
And also the OpenFOAM-2.1.1 is installed in my machine.
In myCFDEM folder there is LIGHHHTs-2.4.4 and i try to install it by its guide but i receive some error affter using this commands:
“make fedora_fpic”
“make makelib”
errors::

Hi,

May i ask if cfdem is compitable to the new version of gcc&openmpi, say 6.3.0 ? and intel mpi, please?

Thanks,
Dan

Dear all,

Coupling LBM with DEM is an interesting approach which has been initiated by CFDEM project led by Phillipe for several years. I have not gone deeply into this method, but one of my first questions is why this method has not been used and developed much in comparison to CFD-DEM coupling. There should be some limitations of LBM-DEM coupling that has hampered it from wider application.

I am looking forward to discussion and sharing experience of this method, which would be very helpful to oncoming users.

Thank you,

Regards

Hi all