In order to implement SIMPLE-type preconditioners for the incompressible Navier-Stokes equations (Elman e.a. JCP 227, 2008) using the PCFieldSplit framework, it looks like I need to replace inv(A00) by some cheap approximation
1) in the Schur complement 2) in the L and/or U of the LDU factorization 3) while keeping A00 in the D What would be the best way? dr. ir. Christiaan Klaij CFD Researcher Research & Development E mailto:C.Klaij at marin.nl T +31 317 49 33 44 MARIN 2, Haagsteeg, P.O. Box 28, 6700 AA Wageningen, The Netherlands T +31 317 49 39 11, F +31 317 49 32 45, I www.marin.nl
