[FLASH-USERS] Expansion of Target

[Scott Feister]

Hi Benbayer,

This is a well-known issue in our community, for those studying
laser-plasma interactions. FLASH treats everything as a plasma. There are
no chemical bonds (e.g. solids physics, liquids physics) which are in the
code and would physically prevent such expansion. One workaround can be
explained better by others, is to "freeze" the hydrodynamics on cells who
do not exceed a certain temperature. We can do that using a variable in
flash called "BDRY". I will leave it to others to elaborate.

As a starting point, search through our past forum discussions for "BDRY".
For example, here's a good syntax in Google to search the entire FLASH
website:
"BDRY site:https://flash.rochester.edu/"

https://www.google.com/search?q=BDRY+site%3Ahttps%3A%2F%2Fflash.rochester.edu%2F&oq=BDRY+site%3Ahttps%3A%2F%2Fflash.rochester.edu%2F&aqs=chrome..69i57.4755j0j4&sourceid=chrome&ie=UTF-8

Hope this helps!

-Scott

On Tue, Feb 15, 2022 at 4:14 AM kouider benbayer <benbayer.kouider at gmail.com>
wrote:

> Hi all.
> I have observed a problem of expansion of the whole target  over time
> instead of expansion at the point where the laser is focused.
> I am attaching the pseudo plot of density which shows the expansion of the
> target.
> Can anyone have a solution to this issue?
> Best regards.
> Benbayer.
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