Re: [Libmesh-users] Dirichlet constraints in NonlinearImplicitSystem

[Vikram G. <vik...@gm...>]

Hello Renato,
                      I think example 8 in systems_of_equations should be
useful in this context.

Vikram Garg


On Thu, Aug 12, 2021 at 8:48 AM Renato Poli <re...@gm...> wrote:

> Hi all,
>
> I had no reply on this one, I am struggling with this design.
> I could not make this work, should I go for the Penalty method?
>
> Renato
>
>
> On Tue, Aug 10, 2021 at 10:49 PM Renato Poli <re...@gm...> wrote:
>
> > Hi,
> >
> > In linear systems, I was used to adding dirichlet constraints with
> > dogmap.add_dirichlet_constraints(). I needed to use
> > heterogeneously_constrain_matrix_and_vector after assembly.
> >
> > What would be the way to do that in NonlinearImplicitSystem? I understand
> > that NR solvers solve for the increment, so that "heterogeneously" would
> > make little sense.
> >
> > Should I expect Dirichlet constraints to work anyway?
> >
> > Renato
> >
>
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