On Wed, Dec 14, 2011 at 19:40, Dmitry Karpeev <karpeev at mcs.anl.gov> wrote:
> The trouble is that the constraints can get "eliminated" only when they > become active. That's not what I meant. I meant to transform the algebraic system so that those extra variables were eliminated. The point is that we tend to put a lot of effort into designing effective preconditioners for a standard formulation (e.g. conservative variables), and that is partly lost of we have this other system in which the evaluations of constitutive relations are added explicitly. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20111214/b1ce332b/attachment.html>
