CFDEM®coupling - User Forum

Hello Team, Greetings. I would like to bring to your notice that when we install OpenFOAM alone (using commands on OpenFoam webpage, https://openfoam.org/download/6-ubuntu/), all the commands of paraFoam such as -block, -builtin, -case work perfectly fine.

Hello,
so im trying to run the SettlingMPI tutorial but it doesnt quite seem to work for me properly. From what i have seen from a colleague, there should only be one particle showing in paraview which is sinking over time. For me its arount 16 particles at once and im assuming that these are the same particles but at the following timesteps. That is just an assumption though and I am not 100% sure.

I have added a screenshot.

Hello,

I cannot find a copy of the following papers:

HAGER, A., KLOSS, C. and GONIVA, C. (2011): “TOWARDS AN EFFICIENT IMMERSED BOUNDARY METHOD WITHIN AN OPEN SOURCE FRAMEWORK”, Proc. of the 8th Int. Conf. on CFD in Oil and Gas, Metallurgical and Process Industries, Trondheim, Norway

GONIVA, C., KLOSS, C., HAGER,A., WIERINK, G. and PIRKER, S. (2011): “A MULTI-PURPOSE OPEN SOURCE CFD-DEM APPROACH”, Proc. of the 8th Int. Conf. on CFD in Oil and Gas, Metallurgical and Process Industries, Trondheim, Norway

Hello everyone!

I hope someone can answer this simple question...

Scenario: Pipe (with a grid stl file at the outlet) is filled with particles. I run water through the inlet side and I would like to count the number of particles that pass the grid due to the fluid.

I tried the massflow/mesh without coupling and it worked well. However, I wanted to know if this works when coupled to a scenario I mentioned above. I am thinking that it should just count them without any issues but I know some things in liggghts don't work with cfdem coupling.

Hi everyone,

I would like to get a better intuition about alphaMin parameter in coupling properties. what does it do exactly and what is its effect with fine mesh. I mean should we decrease or increase it while we are using a fine mesh?

kind regards,

Arghavan

Hello!

I have been struggling a lot lately with the compilation of CFDEM-Coupling which seems to be super non-trivial. I am unable to run any tutorials.

Hello!

I am wondering whether or not I have installed CFDEM coupling properly. The screenshot of compilation process is attached
I tried to run few CFDEM tutorials, they simulate until some point and that are not able to generate some png files. Forums say that this might be related to the compilation of OpenFOAM

I am using Ubuntu 20.04 and also attaching the OpenFOAM compilation error text. It throws an error and I am not able to run any OpenFOAM tutorials. I've been thinking to go back to 18.04 and try it there.

Best regards,
Azamat

Hello Team,

Greetings. I'm hereby attaching an image which is the pressure drop across the fluidized bed versus inlet velocity for three different cell sizes in CFD setup (rest all parameters remaining constant). Particle diameter is 1.2mm and idea is to find minimum fluidization velocity. All meshes generated by blockMesh.

Hello!

I am am trying to install CFDEM on a CentOS cluster. I keep getting the following error when I try to compile using cfdemCompCFDEMall:

Hello!

I am trying to use servo walls in order to apply a constant confining force on some particles. The force is not so large, only about 2-5N. I am using periodic boundaries for the compressed particles but since I do not my confining mesh in the x and y directions I guess its ok (right?). I should also mention that between mesh and the flowing particles is a single layer of a particle lattice which is rigidly bonded.