[FLASH-USERS] 2D Spherical Coords + Multi-Group Radiation Diffusion

[Jeremy Melvin]

Raghunath and Ernesto,

Thanks for your input.  Yes, based on page 293 in the FLASH manual it
seemed like it wasn't supported, so I wanted to verify since the
actual F90 files (Grid_advanceDiffusion.F90 and
Diffuse_solveScalar.F90) didn't have any error catching to make sure
your geometry is one of those supported.

Anyway, it seems to me that all that is missing is a 1/r term in the
theta direction div B terms in the gr_hypreCreateMatrix.F90 file.  So
I am seeing what happens when I add them in.  Thanks for the help.


Jeremy


On Tue, Mar 8, 2016 at 8:18 AM, Ernesto Zurbriggen
<ernesto at mail.oac.uncor.edu> wrote:
> Hi Jeremy,
> I'm not sure if this answers your question but may be you should have a look
> to table 17.1 of FLASH4.3's manual (pag. 293). There it says that
> spherical2D + Diffusion is not supported, not in split integration either in
> unsplit.
>
> I hope this can be useful for you. Best!
>
>
>
>
> Quoting Jeremy Melvin <jamelvin at gmail.com>:
>
>> Hello All,
>>
>> I am trying to run a 2D Rad-Hydro simulation in spherical coordinates
>> (r-theta) using Multigroup Radiation Diffusion (MGD).
>>
>> However, it seems to me that the Diffusion solvers in
>> physics/Diffuse/DiffuseMain/ and their corresponding calls to the
>> GridSolvers don't support 2D spherical geometry?  Is this correct or
>> am I misunderstanding the proper way to run 2D spherical simulations
>> with MGD?
>>
>> Does anyone have any experience running 2D spherical simulations using
>> an implicit solver for diffusion in FLASH?
>>
>>
>> If anyone has any advice or recommendations, I would appreciate it.
>> Thanks a lot!
>>
>>
>>
>> Jeremy
>>
>
>
>
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