[FLASH-USERS] The problem of applying magnetic boundary conditions in flash 3D computation

[Ryan Farber]

Hi Lizy,

I’m not sure I fully understand your questions. I have not used non-Cartesian geometries in 3D with FLASH and generally they’re less supported/tested but in principle you should be able to use the “cylindrical” geometry. I think I read a paper on the Sedov problem recently that improved the 3D spherical MHD solver so that might be worth a look too.

Not sure regarding the current files. You may need to tweak a few routines.

Best,
Ryan

Sent from my iPhone

> On Jul 22, 2024, at 9:27 PM, lizy <3287940670 at qq.com> wrote:
> 
> 
> Dear Flash developers and all staff,
> 
> I'm very sorry to disturb you amidst your busy schedule. I want to study the situation where there are water droplets inside a cylindrical conductor. Water droplets may not necessarily be on the axis of symmetry. Therefore, I will use 3D instead of axisymmetric research.
> 
> My question is as follows:
> 
> 1. Can Flash create a cylindrical computing area in 3D computing? I saw in the materials I read that the calculation areas established are all in the shape of cubes, similar to - nxb=- ny b=.
> 
> 2. Flash can establish the relationship between current and boundary magnetic field to make the imported current file meaningful. Is the method of importing current files suitable for 3D calculations? For example, the calculation area of a three-dimensional cylinder or cube. Or is it only applicable to two-dimensional axisymmetric conditions like in the case study?
> 
> Thank you very much for your answer!!!
> 
> Lizy
> 
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