Hi Jane Lee and Wolfgang, If I understand this function correctly it is a function that projects a H(div)-vector field onto the Raviart-Thomas space. While this function is clearly useful it is in my opinion less well-suited to prescribe (scalar) normal fluxes. If you were to do so you would explicitly need knowledge of the normal direction to first construct a vector field which then projected on the Raviart-Thomas space would give you the desired normal trace (same would be true for traction boundary conditions in which case you would need to know a suitable stress tensor).
On Thursday, August 30, 2018 at 6:41:51 PM UTC+2, Wolfgang Bangerth wrote: > > > Jane: Konrad already gave the correct answer. There is also the function > VectorTools::project_boundary_values_div_conforming: > > https://www.dealii.org/9.0.0/doxygen/deal.II/group__constraints.html#ga86427a4e8b3a7e580dabb4e473005288 > > > Best > W. > Jane, I believe you could do what Wolfgang suggested using VectorTools::project_boundary_values_div_conforming but then you need to construct the vector field first and then project it on the boundary in RTk. Best, Konrad -- 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. For more options, visit https://groups.google.com/d/optout.
