[Users] Reflection symmetry for staggered vector potential

[Erik Schnetter]

Jay

I'm not aware of a thorn that would support this. If there is one,
please let me know.

Luckily, reflection symmetries are straightforward to implement since
they are local. I'd be happy to assist.

-erik

On Mon, Apr 11, 2022 at 1:02 PM Jay Vijay Kalinani
<jayvijay.kalinani at phd.unipd.it> wrote:
>
> Dear all,
>
> In the GRMHD code Spritz, we define the vector potential components as staggered grid-functions (defined on cell-edges) within interface.ccl in the following way:
>
> #Avec_x(i,j+1/2,k+1/2)
> real Avec_x type = GF Timelevels=3 tags='tensortypealias="D"  interpolator="matter" Prolongation="STAGGER011"' "x-component of the Vector Potential"
>
> #Avec_y(i+1/2,j,k+1/2)
> real Avec_y type = GF Timelevels=3 tags='tensortypealias="D"  interpolator="matter" Prolongation="STAGGER101"' "y-component of the Vector Potential"
>
> #Avec_z(i+1/2,j+1/2,k)
> real Avec_z type = GF Timelevels=3 tags='tensortypealias="D"  interpolator="matter" Prolongation="STAGGER110"' "z-component of the Vector Potential"
>
> I was hoping to know if there is support provided within the Einstein Toolkit (maybe via the ReflectionSymmetry thorn) to use reflection symmetries (for example, along z=0 plane or even octant symmetry) for such aforementioned staggered variables.
>
> Any suggestions or insights on this would be very helpful.
> Thank you very much in advance.
> Cheers,
> Jay
>
>
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-- 
Erik Schnetter <schnetter at gmail.com>
http://www.perimeterinstitute.ca/personal/eschnetter/