Good to know. Let me read the documentation a bit and I could try to come up with a PR. Maybe this is something we could discuss? I'd be glad to help in improving DG methods :)
On Thursday, March 11, 2021 at 4:29:04 p.m. UTC-5 Wolfgang Bangerth wrote: > On 3/11/21 10:14 PM, blais...@gmail.com wrote: > > I am currently trying to solve an advection-diffusion equation at very, > very > > high Péclet number. I first implemented a GLS-stabilized continuous > Galerkin > > solution, it works well, but clearly I think a DG approach would be > immensely > > better here. > > > > The issue is that the velocity field for my advection-diffusion stems > from a > > Continuous Galerkin solution with another dof handler, formulated using > a > > FESystem. Everything work well until them. The issue I have is that the > > FEInterfaceValues does not seem to want to work with FEValuesExtractors? > It > > seems like it cannot use the [] operator to extract my velocity values > out of > > my 4 components (velocity + pressure). > > > > I am sure i'm forgetting something stupid here, but how should I proceed > for > > vector valued problem using DG? > > No, you're not forgetting anything. FEInterfaceValues is still a pretty > new > class and nobody has ever written the equivalent of the FEValuesViews > classes > that you get from FEValues when you apply an extractor. > > I suspect that the effort would not be huge, and that one could just > copy-paste a lot of code from the existing views classes. If you were > interested in doing that, I'd be happy to discuss what I think is going to > be > necessary. But the short answer is really that FEInterfaceValues isn't > ready > for vector-valued problems at the moment. > > Best > Wolfgang > > -- > ------------------------------------------------------------------------ > Wolfgang Bangerth email: bang...@colostate.edu > www: http://www.math.colostate.edu/~bangerth/ > > -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to dealii+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/dealii/1189c3ca-63e1-4ebf-aace-395747dd4425n%40googlegroups.com.
