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Ansys Learning Forum › Forums › Discuss Simulation › Fluids › Cyclone (Stairmand) simulation using RSM › Reply To: Cyclone (Stairmand) simulation using RSM

October 11, 2024 at 1:39 pm
Sem B.
Subscriber

Thank you. I found this on the forum regarding SST in cyclone simulation:

"Poly-Mesh with inflation layers at the wall.
I recommend to use either SST +Curvature Correction as start for EARSM and then RSM. In that order I will go."

Actually, that is also what I am doing: Using SST CC for intitial solution for RSM. Still, whichever mesh I use, and different settings in methods/controls, the inner section with roughly zero tangential velocity remains being much wider than expected, which can also be seen in the velocity profiles. 

I'm not sure what you mean with the key on the first contours. I have already extended the inlet/outlets by length of 2*D, which should be more than enough.Â