[owayz]

Hallo All,
I am running a compressible simulation of flow over a cylinder, using k-OmegaSST as turbulence model and rhoPimpleFoam as solver. The Reynolds number is 10000.
I read in some other threads that k-Omega is a high Re Turbulence model. But considering the cylinder case the Re didn't seem to be that high. So I tried using the k-OmegaSST without wall functions. Tried to resolve the y+ in first cell < 1. I haven't checked the y+ yet, but here are some observations:
1- The coefficient of drag on cylinder Cd ~ 1
2- I am able to see the vortex shedding phenomena that is typical for a cylinder flow at this Re.
3- I calculated the Strouhal Number to be St ~ 0.22, which looks pretty good.

My questions:
1-Seeing the results can I conclude that k-OmegaSST can be used without wall functions for low Re flows?
2-I am pretty satisfied with the case setup, (i.e boundary conditions, solver set up, thermophysical properties) can I really rely on this setup or do I need to conduct some other checks as well, before putting my confidence in this setup (for similar problems)?

Regards,
Ali