<div class="gmail_quote">On Thu, Apr 14, 2011 at 20:05, Denner, Fabian <span dir="ltr"><<a href="mailto:f.denner09@imperial.ac.uk">f.denner09@imperial.ac.uk</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
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.</blockquote>
</div><br><div>Finite element? Inf-sup stable or stabilized? Continuous or discontinuous pressure? This email from last week is relevant</div><div><br></div><div><a href="http://lists.mcs.anl.gov/pipermail/petsc-users/2011-April/008475.html">http://lists.mcs.anl.gov/pipermail/petsc-users/2011-April/008475.html</a></div>
<div><br></div><div>Coupled multigrid takes some work, you can do algebraic multigrid with PCFieldSplit with relatively little effort. What CFL are you running at?</div>