[FLASH-USERS] Magnetized inflow from HIGH boundaries with USM and Paramesh

[Ernesto Zurbriggen]

Hi Andy!
If you are just having problems with the combination AMR+USM+HIGH
x-boundary, and for example,
not at LOW x-boundary, it's likely you are having problems managing the
indexes in the regionData array.

Remember that in the HIGH x-boundary when gridDataStruct=FACEX you have one
extra index, i.e. NXB+1,
while not for gridDataStruct=FACEY and FACEZ.

And maybe also that if you are using units (cgs or SI) in your simulation,
do not forget the ~4PI factor to define
the magnetic field inside FLASH.

Best!











El vie, 22 abr 2022 a las 15:42, Andy Sha Liao (<andy at f.energy>) escribió:

> I've been trying to use Grid_bcApplyToRegionSpecialized to inject a
> spatially uniform, magnetized inflow into a 2D simulation from the HIGH
> x-boundaries of the domain.
>
> However, I couldn't get it to work with Paramesh+USM+HIGH boundary for
> either cartesian or cylindrical geometries.
>
> When I set up the problem with this combination (PM4+USM+HIGH), and only
> this combination, the magnetic field entering from the injection boundary
> is not uniform as I want it to be, but rather there is a modulation with
> periodicity equal to the size of a block.
>
> I need this particular combination for my problem. It is the only one that
> makes sense, but it's the only one that's not working.
>
> How do I fix this?
>
>
> Thanks!
>
>
> Andy
>
>
>
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