This is a big topic. One is node-nested re-triangularization, popular in finite element methods. There is some experimental code for this in PCGAMG, but it's not production code and due for a refactor. Another is element agglomeration, which is more popular with finite volume methods (and generally for problems where conservation is paramount).
On Tue, Jan 22, 2013 at 11:16 AM, Fande Kong <fd.kong at siat.ac.cn> wrote: > Hi all, > > Are there any popular methods or algorithms which can be used to produce a > coarser mesh for a given 2d or 3d unstructured mesh? > > -- > Fande Kong > ShenZhen Institutes of Advanced Technology > Chinese Academy of Sciences > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20130123/e4dcef17/attachment-0001.html>
