[FLASH-USERS] Does FLASH simulate solids?

[Scott Feister]

Here are some more details on freezing cells with the BDRY variable.

1. In Config, add the line "VARIABLE BDRY"
2. Elsewhere in your code (e.g. Simulation_initBlock.F90 and
Simulation_adjustEvolution.F90), you can set the BDRY_VAR just like you
would with any other cell variable (TELE_VAR, DENS_VAR, ...). The two
values relevant for BDRY_VAR are 0 and 1.

Scott

On Wed, Nov 6, 2019 at 4:37 PM Scott Feister <sfeister at gmail.com> wrote:

> 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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