Very high viscosity problem

Submitted by mofazli on Fri, 07/09/2021 - 11:07

Hi everyone,
did anyone do a simulation with cfdemSolverIB and high viscosity values? When I use viscosity values like 10 for moderate Reynolds numbers, the code does not converge and even the Glowinski problem does not give a proper result. So can you please give me some hints concerning this issue?
Cheers,
Mohammad

Forums:

mofazli | Tue, 07/13/2021 - 03:39

Any idea about that?! I think it should be solved even we don't have normally high viscosity values such as 1 or 10.

mofazli | Mon, 09/20/2021 - 13:53

Hi Pengfei,
I have tried a small time step. However, the final terminal velocity for particle has a large deviation than the literature. There seems to be a problem with drag value when particle is setlling in a highly viscous fluid.
Have you ever done something like this simulation in viscous fluid?
Cheers,
Mohammad