> You could very well be producing a singular linear system (with large > unknown null space). I'm not sure why you want to do this. There are methods > to solve for periodic behavior and you could choose a turbulence model in > order to produce a steady state.
Yes, I want to get a time averaged steady state. I am able to do this with another (pressure correction) solver, was just comparing. And you gave me a very good hint: I do not have a turbulence model, but I have streamline diffusion, which if increased, makes the crash go away, which indeed seams to indicate a singular system. Thanks, Dominik
