[Zigainer]

Hi,

I have a question regarding the boundary condition.

I have a mass flow inlet and three pressure outlets. If assigned a specific target mass flow rate at each of these pressure outlets. But fluent does not always bring up the designated target mass flow rate.
At a first stage my problem is non-rotating. Almost every time I get the target mass flow rate (guess the difference is because the solution is not fully converged - solely increase mass flow rate at the inlet). But if I start to rotate (full mass flow rate at the inlet and increasing rotation speed) I get convergence problems and the target mass flow rate seems to be ignored..... so I asked myself if it would be better to use a pressure inlet and the mass flow will be reached because of the target mass flow rate ... or what would you suggest?

Thanks in advance!