Jed Brown wrote: > On Thu, Apr 14, 2011 at 20:22, Denner, Fabian > <f.denner09 at imperial.ac.uk <mailto:f.denner09 at imperial.ac.uk>> wrote: > > It's Finite Volume, co-located grid arrangement, stabilized, with > a continuous pressure field at CFL numbers < 1 (typically 0.3-0.7). > > > Much easier, it is likely that a relatively standard coupled multigrid > will work. If you order unknowns so they are interlaced > (u0,v0,w0,p0,u1,v1,...) and MatSetBlockSize(A,4) and/or use the BAIJ > format, you stand a good chance with -pc_type ml and reasonable > smoothers. Or you may have access to a geometric hierarchy? Which package must be installed to make use of "ml" (algebraic multigrid?) as a preconditioner?
Thomas
