Hello! I try to model granular flow in the packed bed. I use Eulerian multiphase regime, set parameters the same as for fluidized bed (fluent tutorial), also I set frictional viscosity and frictional angle for Shaeffer equation. I have never found good solution. What is the matter? Whether it was possible to somebody to solve this problem correctly?

rather vague question. Have you remembered gravity? Dr. Flow Squad

Yes! I set gravity in operating conditiongs.

you may have to provide a "few" more details to get an answer here