interaction force to be zero

Hi all,

I'd like to simulate the case where the only particle influences the fluid (it means the particles do not get any force from the fluid and are in fixed location). I failed with using oneWayVTK coupling, so I tried to find other ways--make zero interaction force.

I used model A for the coupling, so force models used for coupling are DiFeliceDrag, gradPForce, viscForce, and Archimedes forces. To eliminate the force acting on the particle by fluid, I set those value as 0.

For example, I changed drag term to be 0 in 'DiFeliceDrag.C' file, as follows;

drag = dragCoefficient*Ur; => drag = 0;

After I did the same process for other three forces, I entered 'cfdemCompCFDEM' on the terminal.

Then ran the simulation to get the results. I set the interaction forces to be zero, but still the particles got the force from the fluid.

Please let me know, what I missed.

Thanks in advance.