[FMDenaro]

Originally Posted by selig5576

I will try a refined grid study. As I intend to to study high Reynolds number flows with this code and the central differencing of the advetion terms will be unstable in a turbulent regime, do you have suggestions for stable advection schemes?

Well, that's not true...if you plan to work with RANS, the additional dissipation introduced by the model is largely stabilizing the scheme.

[arjun]

Originally Posted by selig5576

I will try a refined grid study. As I intend to to study high Reynolds number flows with this code and the central differencing of the advetion terms will be unstable in a turbulent regime, do you have suggestions for stable advection schemes?

Thats why we use bounded central scheme and mix it with upwind scheme to make it stable and provide the neccessary dissipation.

[leflix]

Hi Selig,

My 2D finite volume code (R.C interpolation, SIMPLE algorithm) can run a simulation with Re=10.000 and dt=0.01 in a 50x50 grid without any spurious oscillations in the case of the lidddriven cavity. Thus I don't think it is a question of modelling but rather a bugg (I don't use any RANS model for that) .

Leflix