[Users] Boundary conditions on a sphere

[Raimon Luna]

Dear Erik,

Thank you very much for the information!

Best wishes,
Raimon

Missatge de Erik Schnetter <schnetter at gmail.com> del dia dc., 17 d’ag. 2022
a les 2:59:

> Raimon
>
> I would recommend using a multi-block system where the location of the
> boundary coincides with a coordinate plane. You will then need to
> implement the respective boundary condition yourself, by choosing
> those points which have respective grid point indices.
>
> An alternative method might be to use embedded boundary conditions. I
> have not used these myself and know little about them, but they are
> used to apply boundary conditions with Cartesian grids that do not
> align with boundaries.
>
> -erik
>
> On Tue, Aug 16, 2022 at 7:05 PM Raimon Luna <raimonluna at gmail.com> wrote:
> >
> > Dear all,
> >
> > I would like to know if there is any way ("hacky" or not) to implement
> boundary conditions on some
> > variables on a sphere within the computational domain. In other words,
> if there is a way to impose boundary conditions on some subset of the
> fields at some finite radial coordinate, smaller than the size of the
> computational domain, while letting the rest of the fields propagate freely
> until the boundary of such computational domain. I assume this would be
> easier with a multipatch system, but solutions for a Cartesian grid would
> also be ok.
> >
> > Thank you very much for your attention!
> >
> > Raimon
> > _______________________________________________
> > Users mailing list
> > Users at einsteintoolkit.org
> > http://lists.einsteintoolkit.org/mailman/listinfo/users
>
>
>
> --
> Erik Schnetter <schnetter at gmail.com>
> http://www.perimeterinstitute.ca/personal/eschnetter/
>
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