[FLASH-USERS] Does FLASH simulate solids?

[Scott Feister]

Hi Nitish,

You're modeling your Aluminum sphere as a solid density, gaseous fluid.
There are no additional physics built into FLASH related to the
low-temperature covalent bonds, etc. that hold together a liquid or a solid
-- it might be worth considering adding those physics in the future! For
now, one trick that we do when handling room-temperature solids is to
numerically "freeze" the cells in place until they heat to a certain
temperature. If you're interested in that, it's is something that can be
done by declaring the BDRY variable in your Config file, and then writing a
script to dynamically set and unset the BDRY variable (between 0 and 1) in
Simulation_adjustEvolution.F90.

Scott

Scott Feister
Assistant Professor, Computer Science
California State University Channel Islands

On Tue, Nov 5, 2019 at 9:49 AM Acharya, Nitish <nachary2 at ur.rochester.edu>
wrote:

> Dear flash-users,
>
> I am currently working on a simulation based on LaserSlab in FLASH. I have
> a small Aluminum sphere inside the target material. Initial density and
> temperature for the Aluminum sphere is set to solid density value and room
> temperature. I would like to know here, does FLASH actually simulate
> solids? Or is it treating the Aluminum sphere as a fluid?
>
> Thanks,
> Nitish
>
>
>
> ---------------------------
>
> Nitish Acharya
>
> PhD Student
>
> Department of Mechanical Engineering
>
> University of Rochester
>
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