kOmegaSST omega residuals strange behaviour
 

Hi, i'd like to know if some of you fellow foamers could explain why my omega residuals are very very small and not resolving?

The case is steady state external aerodynamics and i used motorcycle simpleFoam tutorial as base, except motorcycle is frisbee and there is no lower wall :)

Mesh is ~8M cells hexa and wall functions are in use.

I used k=0.35 and omega=2 as a initial condition, inlet is fixedValue and outlet is inletOutlet and sides are slip and my air speed is 20 m/s. Numerics are cellLimited leastSquares 1 for grad, linearUpwindV for div(U) and upwind for k and omega. Pressure solver is PCG and otherwise PBiCG, tol 1e-08 and reltol 0.01. Under-relaxation is p 0.3, U 0.5, k and omega 0.3.

Solution is not converged in attached picture but i'm more worried about the omega residual behaviour.