[liliana]

Hi all!



I am trying to do a simulation of a two-phase flow in Fluent. The secondary phase is considered as granular.

The flow occurs between two concentric cylinders, and the inner cylinder is rotating.

I have made a detailed study before, but with only one phase fluid, in 2D. The results were consistent with what we were expected. But now, with the two phases, I am getting very weird results.

I also carried out some others analysis in 3D considering the same geometry, and the results were more coherent than in 2D.

So, I have two questions:

1) would it be possible that a 2D simulation does not represent the 3D phenomena, even if the geometry and the flow are symmetric?

2) would be the size of the element the problem? Is there any restriction regarding the element size of an eulerian granular approach? I mean, the element should be bigger than the particle?

Thanks!!!