Hi Matt, thanks for sharing the literature.
Would you suggest any monolitic approach for the mpiaij/mpibaij matrix instead of fieldsplit? I did some blind search using gamg/hypre and they look terribile. I guess i am missing a trick, probaly they are not the way to go? Thanks! Il Lun 17 Apr 2023, 13:50 Matthew Knepley <knep...@gmail.com> ha scritto: > On Mon, Apr 17, 2023 at 6:37 AM Edoardo alinovi <edoardo.alin...@gmail.com> > wrote: > >> Sure thing, the solver I am working on is this one: >> https://gitlab.com/alie89/flubio-code-fvm. >> >> It is a 3D, collocated, unstructured, finite volume solver for >> incompressibility NS. I can run steady, unsteady and I can use SIMPLE, PISO >> and Factional step method (both explicit and fully implicit momentum). I >> can also solve for turbulence (k-omega, BSL, SST, Spalart-Allmars, LES). I >> have also implemented some kind of Immersed boundary (2D/3D) that I need to >> resume at some point. >> >> Hot topic of the moment, I am developing a fully coupled pressure based >> solver using field-split. What I have now is working ok, I have validated >> it on a lot of 2D problems and going on with 3D right now. If all the >> tests are passed, I'll focus on tuning the field splitting which looks to >> be a quite interesting topic! >> > > I think a very good discussion of the issues from the point of view of FEM > is > > https://arxiv.org/abs/1810.03315 > > There should be a similar analysis from the FVM side, although it might > not be possible to > find a pressure discretization compatible with the FVM velocity for this > purpose. > > Thanks, > > Matt > > >> Flubio is a project I have been carrying on since PhD days. The >> implementation is 99% on my shoulders, despite the fact I am >> collaborating with some people around. I am coding evenings and >> weekends/free time, it gives me a lot of satisfaction and also a lot of >> insights! >> > > -- > What most experimenters take for granted before they begin their > experiments is infinitely more interesting than any results to which their > experiments lead. > -- Norbert Wiener > > https://www.cse.buffalo.edu/~knepley/ > <http://www.cse.buffalo.edu/~knepley/> >