[topspin247]

Hi.

I have been researching and found that in the past, Fluent is better for high-mach number flows while CFX is good for internal flows with rotating machinery. Is this still valid in recent versions of ANSYS?

The geometry that I'm simulating is rotating about its axis and is external flow with air speed set as a boundary condition ranging from Ma = 0.1 to Ma = 3.0 (think high-speed airfoil simulation).

There will be shock formations as well as high speed flow separation in the trailing edge.

1. Is fluent or CFX better for this study?
2. Should I use SST or realizable k-epsilon? Or is there a better RANS model for these conditions?
3. I believe that density-based is better than pressure-based in this situation.