[FLASH-USERS] [EXT] Re: Plasma Focus Simulation with Flash Code

[Yasar Ay]

Dear Tomek,

Thanks for your reply.
It may be a good start for me then to simulate plasma evolution in the
device.
It seems that it's worth spending time to learn how to use FLASH Code.

Best regards
Yasar

On Wed, Apr 7, 2021 at 1:04 AM Tomasz Plewa <tplewa at fsu.edu> wrote:

> Dear Yasar -
>
> MHD equations, as solved by FLASH, generally apply to collisional
> conditions. Therefore, if your problem is collisional, the plasma evolution
> could be --in principle-- computed with FLASH.
>
> As for neutronics and xray diagnostics, and as someone already observed, you
> would need to develop custom modules.
>
> Tomek
> --
> On 4/6/21 12:27 PM, Yasar Ay wrote:
>
> Dear Eddie Hansen,
>
> Thank you very much for your reply.
>
> Plasma focus device is also collisional. This webpage has some basic
> information and a short video that explains the general concept of the
> plasma focus. I believe that after watching this video, you can estimate if
> FLASH can be used for plasma focus device simulation. It will be helpful
> for me if you watch and estimate.
>
> https://lppfusion.com/technology/dpf-device/
>
> Both MHD codes and kinetic codes can be used for different purposes in
> plasma focus devices for different calculations. They both have their own
> pros and cons for plasma focus devices.
>
> I have another question if you don't mind.
> Content of FLASH Users Guide has something called Particles Unit (Chapter
> 20). Does that mean FLASH also capable of Hybrid PIC simulation?
> If yes, that would be great for me to try flash both as an mhd code and
> hybrid pic code for plasma focus device simulation.
>
> Best regards
> Yasar
>
> On Tue, Apr 6, 2021 at 5:03 PM Eddie Hansen <ehansen at pas.rochester.edu>
> wrote:
>
>> Hi Yasar,
>>
>> Whether or not you can simulate your problem with FLASH depends on the
>> physics of the problem and what sort of approximations or assumptions
>> you're willing to make. For starters, since FLASH is a fluid code, it
>> should really only be used for collisional plasmas. If your problem is more
>> kinetic in nature, then a particle code would be more appropriate.
>>
>> FLASH does not contain a neutron yield calculation. You would have to do
>> your own post-processing on the output to come up with an estimate for that.
>>
>>
>> On Tue, Apr 6, 2021 at 1:56 AM Yasar Ay <yay at ncsu.edu> wrote:
>>
>>> Is there anyone who has any idea about my question?
>>>
>>> Thanks
>>> Yasar
>>>
>>> On Fri, Apr 2, 2021 at 2:38 AM Yasar Ay <yay at ncsu.edu> wrote:
>>>
>>>> Dear Flash Users,
>>>>
>>>> I need your help and suggestions for my research.
>>>>
>>>> I am working on plasma focus device simulation. I am especially
>>>> interested in spherical plasma focus device simulation.
>>>>
>>>> I am not familiar with FLASH Code but I am very interested in learning
>>>> it for plasma focus device simulation.
>>>>
>>>> Can anyone tell me if I can use FLASH Code for plasma focus device
>>>> simulation ?
>>>> Is it capable of simulating plasma focus devices ?
>>>>
>>>> I want to do the following steps if possible.
>>>> 1) Simulating the dynamics of the moving plasma sheath in the device
>>>> 2) Calculating the neutron yield and x-ray production during pinch
>>>> phase.
>>>>
>>>> Best regards
>>>> Yasar Ay
>>>>
>>>
>>
>> --
>> Eddie Hansen, PhD
>> Postdoctoral Associate
>> University of Rochester
>> 607-341-6126 | Flash Center
>>
>
>
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