[FLASH-USERS] FLASH3.1 Orszag-Tang (any MHD setups?)

[Tomasz Plewa]

Dear Dongwook -

Thanks for explaining, and congratulations on publishing your paper!

Section 22.2 does not list additional options so I expected MHD setups 
supplied with the code working straight out-of-the-box with provided 
defaults (say -auto -2d).

Best -

Tomek
--
dongwook at flash.uchicago.edu wrote:
> Hi Tomek,
>
> Please include either "+8wave" or "+usm" in your setup in order to
> choose your MHD solver for your simulation.
>
> In both FLASH3 and FLASH3.1, there are two MHD solvers available
> for a given MHD simulation.
>
> A default one is the operator splitting 8-wave solver
> which has been imported from FLASH2, and a new one is the
> operator unsplit staggered mesh (USM) solver,
> which I have developed and implemented for FLASH3.
>
> Note that the official release of FLASH3.1 only include
> 1D and 2D implementations of the USM solver and a full
> 3D is available by sending me an email request.
>
> The abort you reported was because the 8wave solver needs only
> two layers of guard cells, while the USM solver needs four of them.
>
> The details of two solvers have been described in the FLASH user's
> guide and you can find it at:
>
> http://flash.uchicago.edu/website/codesupport/flash3_ug_3p1/
>
> Please go to section 13.4 to see the MHD part.
>
> If you need more information on the USM solver, please have a
> look at my paper:
>
> doi:10.1016/j.jcp.2008.08.026
>
>
> Regards,
> Dongwook
>
>
>
>   
>> Hello -
>>
>> I am having a trouble configuring the Orszag-Tang test problem, or
>> essentially any MHD test case.
>>
>> I use
>>
>> setup -auto -2d magnetoHD/OrszagTang
>>
>> and code crashes producing the following output. This with flash.par
>> supplied with this problem. I have tried BrioWu with identical outcome.
>>
>> Any suggestions?
>>
>> Thanks -
>>
>> Tomek
>> --
>>
>>  RuntimeParameters_read:  ignoring unknown parameter "order"...
>>  RuntimeParameters_read:  ignoring unknown parameter "slopeLimiter"...
>>  RuntimeParameters_read:  ignoring unknown parameter "LimitedSlopeBeta"...
>>  RuntimeParameters_read:  ignoring unknown parameter "charLimiting"...
>>  RuntimeParameters_read:  ignoring unknown parameter "E_modification"...
>>  RuntimeParameters_read:  ignoring unknown parameter "energyFix"...
>>  RuntimeParameters_read:  ignoring unknown parameter "RiemannSolver"...
>>  RuntimeParameters_read:  ignoring unknown parameter "CTU"...
>>  RuntimeParameters_read:  ignoring unknown parameter "ForceHydroLimit"...
>>  RuntimeParameters_read:  ignoring unknown parameter "prolMethod"...
>>  RuntimeParameters_read:  ignoring unknown parameter "iGridSize"...
>>  RuntimeParameters_read:  ignoring unknown parameter "jGridSize"...
>>  RuntimeParameters_read:  ignoring unknown parameter "iProcs"...
>>  RuntimeParameters_read:  ignoring unknown parameter "jProcs"...
>>  RuntimeParameters_read:  ignoring unknown parameter "kProcs"...
>>  Grid_init: Monotonic grid interpolation requires at least 4 layers of
>> guard cells.
>>   However, NGUARD is only            2
>>   Maybe you want to setup with '-gridinterpolation=native',
>>   or make sure that NGUARD is set correctly in Config file.
>>
>>  Driver_abort called. See log file for details.
>>  Error message is Please setup with '-gridinterpolation=native', or
>> change NGUARD.
>>  Calling MPI_Abort() for immediate shutdown!
>>
>>
>>     
>
>   
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