> What makes you think that the point where some nonlinear solve stagnates has> > anything to do with correct time-averaged statistics? > What is your verification and validation process?
Strictly mathematically you are probably right. Intuitively physically, I do expect - and in fact get - some representative solution. I validated only qualitatively, looking at streamlines. I do get the expected vortices at the expected locations by eye looking very similar to the ones in published papers. > You should use a turbulence model. Even a zero-equation model like > Smagorinsky would be better than simple streamline diffusion. You are right, but I will not be able to implement it in the nearest future. And the focus is transient von Karman problem, steady state was just a side jump to see what it would do. Streamline diffusion just proved your guess right about the singular system. Still I am not happy it crashes instead of diverging. Thanks Dominik
