[FLASH-USERS] [EXT] pulsed-electrical discharge in FLASH?

[frank wessel]

Hi Marissa, 
Hopefully what we’re planning won’t be too sophisticated (or heavy).
For now our interest is simply a coaxial-plasma gun. 

As you know the DPF and ZP are distinguished by their directions of
current and mass flow, and their boundary conditions. So, if there 
was something you might share for the ZP that illustrates how to 
implement a current discharge, that would be a great help to us. 

Thank you. 
fw


> On Jul 7, 2021, at 2:41 PM, Marissa B. P. Adams <madams at pas.rochester.edu> wrote:
> 
> Dear Frank,
> 
> Are you aiming to simulate dense plasma focus or some sort of arching experiment? AFAIK this has not been done. 
> 
> On a related note: I've been implementing the Z-pinch capabilities within FLASH for some time now (amongst other projects -- it is currently on the backburner, sorry ya'll, I gotta graduate). It is a difficult problem with a surprisingly large amount of layers of complexity (solving this problem from the Eulerian perspective, as is done in FLASH). 
> 
> In my opinion it would require some extreme heavy lifting: experience developing, using, and interpreting results from FLASH to implement a DPF module if it would be at all comparable to the work I've been doing (as arguably you can consider DPF a Z-pinch, but numerically, I am unsure of how other codes do DPF). I'd advise finding a different code to use to do DPF for now, although I think DPF is on a to-do list somewhere on the powers-that-be's desk :)
> 
> Best,
> Marissa
> 
> On Wed, Jul 7, 2021 at 5:11 PM frank wessel <fwessel at gmail.com <mailto:fwessel at gmail.com>> wrote:
> Greetings FLASH users,
> Does anyone know whether FLASH has been used to simulate a 
> pulsed electrical discharge between coaxial electrodes?
> 
> If so, can someone provide pointers to a simulation/module that implements this? 
> 
> If not, can someone recommend something that can be modified as a starting point? 
> 
> Knowing whether this has been done before will be a great help. 
> 
> Thank You,
> fw

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