On Fri, Dec 30, 2011 at 11:25, Dominik Szczerba <dominik at itis.ethz.ch>wrote:
> Yes, I want to get a time averaged steady state. I am able to do this > with another (pressure correction) solver, was just comparing. > What makes you think that the point where some nonlinear solve *stagnates* has anything to do with correct time-averaged statistics? 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. > You should use a turbulence model. Even a zero-equation model like Smagorinsky would be better than simple streamline diffusion. What is your verification and validation process? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20111230/dd5f13b6/attachment.htm>
