[FLASH-USERS] Fwd: [EXT] FLASH 4.8 current calculation problem

[Reyes, Adam]

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Adam Reyes


Code Group Leader, Flash Center for Computational Science  
Research Scientist, Dept. of Physics and Astronomy
University of Rochester
River Campus: Bausch and Lomb Hall, 369  
500 Wilson Blvd. PO Box 270171, Rochester, NY 14627
Email adam.reyes at rochester.edu
Web https://flash.rochester.edu
 (he / him / his)


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> Begin forwarded message:
> 
> From: adam reyes <adam.reyes at rochester.edu>
> Subject: Re: [EXT] FLASH 4.8 current calculation problem
> Date: May 15, 2024 at 7:47:51 AM GMT+2
> To: Paul Ney <paul at miftec.com>
> 
> Hi Paul,
> 
> FLASH4.8 migrated to taking the boundary conditions for the magnetic diffusion solve from the “ab_boundary_type” runtime parameters rather than having separate parameters for ideal mhd and resistive mhd to help ensure that the B-field gets treated consistently across various physics solvers. You should set "xr_boundary_type = “circuit”” and it should do what you want.
> 
> See Table 19.5 in the users guide for a description of these: https://flash.rochester.edu/site/flashcode/user_support/flash4_ug_4p8/node128.html#SECTION06616000000000000000
> *********************************************
> Adam Reyes
> 

> Code Group Leader, Flash Center for Computational Science  
> Research Scientist, Dept. of Physics and Astronomy
> University of Rochester
> River Campus: Bausch and Lomb Hall, 369  
> 500 Wilson Blvd. PO Box 270171, Rochester, NY 14627
> Email adam.reyes at rochester.edu
> Web https://flash.rochester.edu
>  (he / him / his)

> 
> *********************************************
> 
> 
> 
>> On May 15, 2024, at 1:48 AM, Paul Ney <paul at miftec.com> wrote:
>> 
>> Hi Adam,
>> 
>> I just upgraded to FLASH 4.8. Unfortunately, running the magnetoHD/ZPinch example does not calculate the time-dependent current profile for this problem whereas FLASH 4.7.1 seems to calculate it properly. I am including the flash.par file used for both cases. The comment near the top shows the setup command I used for both cases.
>> 
>> Any help you can give me is appreciated.
>> 
>> Paul Ney
>> <flash.par>
> 

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