CFDEM®coupling - User Forum

Hi Everybody,

I'm new to CFDEM. So please forgive if this is a silly issue in compiling CFDEM.
Has anyone tried compiling CFDEM with the latest version of OF?

I know these versions are not supported. But I'd love to have CFDEM work with these versions rather than install other versions.
I'm have problem when running cfdemCompCFDEMsrc. Please find below the log file details:

rm: cannot remove 'log/log_compile_results_src_success': No such file or directory
rm: cannot remove 'log/log_compile_results_src_fail': No such file or directory

I am trying to run a case with a lot of particles. Approximately, there will be (around 6,658,051) particles in the simulation domain.

My simulation geometry visual is attached.

I have the following error message:

Hello,
I have a simulation that has a bit of set up in it.
Does all of the setup need to be done strictly in the liggghts enviroment and then in CFDEM simply read in the ligggghts' input file and run,
or can I do the setup in CFDEM? An example would be the following.

LIGGGHTS Script:
Insert Particles:
Compress Particles then uncompress particles and wait for the KE of system to drop below a specific value
Add CFDEM fixes
run 1

Then let CFDEM push the liggghts simulation forward with the runliggghts script.

Hi,

Did anyone install CFDEM in SUSE Linux Enterprise Desktop 15 ? Is the installation procedure same as mention in the CFDEM website https://www.cfdem.com/media/CFDEM/docu/CFDEMcoupling_Manual.html#install... ?

regards,
Hossain

Hi,

Hi,
I am now using the CFDEM for modelling the soil erosion.

As far as I know, the void fraction of the CFD cell, which is the particle volume in each CFD cell, is calculated with the particle information like particle size and location. I'd like to edit the void fraction manually with consistent ratio.
For example,
If the values of actual void fraction are 0.1, 0.2, and 0.3, then I like them to be 0.2, 0.4, 0.6.

Is is possible to adjust the void fraction value manually with consistent ratio?

Thanks in advance,

Soo-Min

Hi,

I'm experiencing some odd behevior of particles at insertion and can't figure it out. I've changed refined my surface stl mesh and that does not seem to help. I've also changed the random seed around to see if that is what is causing it. This is odd to me because I've inserted with a surface in the past and have not experienced this behavior. See attached for a photo and also my input file. I'm currently running pure DEM with the case to determine the root cause. Any help will be greatly appreciated.

Thank you,
Dustin

Hi, I apologise in advance for the very basic question. I have been doing CFD-DEM simulations with Fluent for a few years, and for some reasons I wanted to try something else. However, I know nothing about Openfoam and LIGGGHTS, and by merely reading the CFDEM installation instructions, I don't really understand what I am supposed to do to start a simulation. Are there resources or something for someone who basically knows nothing about this simulation environment (aside for the physical theory and equations)? Thanks.

Hi All,

Can anyone please share input sample script for Bubbling fluidized bed problem.

Thanks,
Rahul