CFDEM®coupling - User Forum

How can I insert micro level particles in shear cell example given in the tutorial. What are the modifications to be made in the syntax? We have tried volume limit.

Is it possible to output the data as shown below about time taken by different routines of DEM while running a CFD-DEM simulation?

Hi, everyone

I am having this problem with the servo wall, the particles are crossing the wall like if it was not there. I attached a picture to illustrate the problem, and also the log file. I basically modified the example on cfdemSolverPisoScalar with a smaller box and particles, and fluid flow in the x-direction.

The code works on LIGGGHTS but I don't know if I need any specific modification for CFDEM.
I really appreciate any help you can provide,
Livio

Hello all,

I have simulated heat transfer in a granular assembly in LIGGGHTS.
I have also simulated a flow field separately in OpenFOAM

However, when I run both of them using cfdemSolverPisoScalar, I seem to be getting only LIGGGHTS output. Is this because of the run time or the time step, or is there more to it?

Regards,
Joel

Dear all,

I want to use fix massflow/mesh to delete a certain type of particles passing a stl surface in CFD-DEM coupling. I use group to define the group-ID.

The problem is the group command does not work and fix massflow/mesh deletes all particles. Is it possible to dynamics group particle in CFD-DEM? Or it is my setting problem.

Thank you for any help.

Regards,

Hi all,

I'm trying to compile CFDEM on CentOS 7 (in an OpenNebula VM).

I've compiled OF 30x and LIGGGHTs from source and they are working.

I'm using additionalLibs_30x and I've adapted the OFversion.H file

Error appears to be due to mpi version / location.

MPI is load though module load, which is load through ~/.bashrc ("module load mpi/openmpi-x86_64").

I think I have to adapt the makefile for the mpi locations and libs. Any tips on this?

Dear all,
is it possible to calculate the motion of an elliptic particle? When I run a simulation in liggghts with atom_style ellipsoid an pair_style gayberne everything works fine, but in cfdem I get the error message "Invalid pair style".

Best regards

Hello all,

I ran the test case for cfdemSolverPisoScalar, and it ran fine till the last minute where the following error popped up:
..................................................................
Finalising parallel run
rm: cannot remove ‘*.eps’: No such file or directory
/home/joel/CFDEM/CFDEMcoupling-PUBLIC-2.4.0/tutorials/cfdemSolverPisoScalar/packedBedTemp/parCFDDEMrun.sh: line 45: octave: command not found

Dear all,

Is there a chance to use paraview to visualize particles' trajectories in time?

Thanks,
Mohsen

Dear all,

I have a solid body within pipe flow and I am interested in determining the lift and drag coefficient of the solid body. These coefficients are determined using the drag and lift forces, so actually I want to determine those!

As a solver I use the IBcfdemsolver (as I include big particles).