On Fri, Dec 30, 2011 at 10:59, Dominik Szczerba <dominik at itis.ethz.ch>wrote:
> Yes, I am a bit malicious, solving for steady state where such is > known not to exists (Karman vortex street past a cylinder). The very > same problem (mesh, constraints, etc.) does not crash when solving > with time stepping. However, I am not completely sure if this is the > reason of the crash, because I am expecting to never be able to > converge, but not to crash. > 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. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20111230/09d54035/attachment.htm>
