Re: [deal.II] Controllins fill-in, abs. tol and rel. tol or smoother and coarse solver of TrilinosWrappers::PreconditionAMG

2019-03-10 Thread Wolfgang Bangerth
On 3/8/19 9:26 AM, Bruno Blais wrote: > > Clearly, parameters like fill-level, rel. treshold and abs. threshold could > be > modified. Is there any way to access them and modify them? I have not been > able to as of now. Bruno -- Jean-Paul already outlined what's necessary. But I wanted to

Re: [deal.II] projecting boundary values for H(div) [and maybe H(curl)]

2019-03-10 Thread Wolfgang Bangerth
On 3/10/19 4:09 AM, Konrad wrote: > > just a quick question. Is there a special reason why for example the function > VectorTools::project_boundary_values_div_conformingĀ is restricted to > Raviart-Thomas elements? The principle should be the same for example for > Brezzi-Douglas-Marini

Re: [deal.II] Controllins fill-in, abs. tol and rel. tol or smoother and coarse solver of TrilinosWrappers::PreconditionAMG

2019-03-10 Thread Jean-Paul Pelteret
Dear Bruno, Indeed, it appears that one isn't able to change the settings passed to the AMG preconditioner other than those set by the AdditionalData object. Your only current alternative is to create the Teuchos::ParameterList yourself, which you can send in to the call to initialize()

[deal.II] How to apply first kind of boundary conditions to one component of a vector

2019-03-10 Thread chenxi . edu1997
Hi, everyone. I am trying to solve a coupling geomechanics and fluid problem using the space:(dim = 2 ) > fe (FE_RaviartThomas(degree), 1, > > //FE_Q(degree+1),dim, > > FE_DGQ(degree), 1, > > FE_DGQ(degree), 1, > > FE_Q(degree+1), dim), > > and >

[deal.II] projecting boundary values for H(div) [and maybe H(curl)]

2019-03-10 Thread Konrad
Hi all, just a quick question. Is there a special reason why for example the function VectorTools::project_boundary_values_div_conforming is restricted to Raviart-Thomas elements? The principle should be the same for example for Brezzi-Douglas-Marini elements, right? Or am I missing something

Re: [deal.II] Nedelec elements of second kind and Brezzi-Douglas-Marini spaces

2019-03-10 Thread Konrad
> > I must admit that I don't have a standard reference for it. There are a > number of books on high order and hp finite element methods that often > provide a pretty good overview of the families of finite elements out > there. Maybe the one by Solin, Segeth, Dolezel is a good starting