On Thu, Apr 14, 2011 at 20:05, Denner, Fabian <f.denner09 at imperial.ac.uk>wrote:
> I solve fully implicit, incompressible DNS of low/moderate Reynolds number > (Re = 1 - 1000) flows. The hexahedral meshes to test the code have an aspect > ration of 1, the tetrahedral meshes are Voronoi-based, do not have high > aspect ratios and a good quality. Finite element? Inf-sup stable or stabilized? Continuous or discontinuous pressure? This email from last week is relevant http://lists.mcs.anl.gov/pipermail/petsc-users/2011-April/008475.html Coupled multigrid takes some work, you can do algebraic multigrid with PCFieldSplit with relatively little effort. What CFL are you running at? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20110414/551cd4a1/attachment.htm>
