[FLASH-USERS] [EXT] fixing layers

[Eddie Hansen]

Not that I'm aware of, but it's fairly simple. First, in your simulation's
Config file, you'll want to make sure you have this line:

VARIABLE BDRY

Then in your Simulation_initBlock, within the do loops, whichever cells you
want to be "solid" you set solnData(BDRY_VAR,i,j,k) = 1.0, otherwise set
solnData(BDRY_VAR,i,j,k) = -1.0. You can then treat
Simulation_adjustEvolution the same way you treat Simulation_initBlock,
except you automatically have access to the current simulation time
(stime). Search through other simulation directories for examples of
Simulation_adjustEvolution. You can again set up do loops if you only want
to change BDRY_VAR for certain cells, or you could simply set everything
back to -1.0 at a certain time.

On Fri, Aug 28, 2020 at 9:56 AM Thibault Goudal <
thibault.goudal at u-bordeaux.fr> wrote:

> Hey Eddie,
> Do you know if there's an example of the F90 files that could include such
> adjustements?
>
> ------------------------------
> *De: *"Eddie Hansen" <ehansen at pas.rochester.edu>
> *À: *"Thibault Goudal" <thibault.goudal at u-bordeaux.fr>
> *Cc: *"flash-users" <flash-users at flash.uchicago.edu>
> *Envoyé: *Vendredi 28 Août 2020 16:44:59
> *Objet: *Re: [EXT] [FLASH-USERS] fixing layers
>
> In FLASH, we have BDRY_VAR to solve this issue. If you set certain cells
> BDRY_VAR = 1.0, then the code will see these cells as "solid" and they
> won't expand into a "vacuum" region. If you want to allow them to expand at
> a later time, then you will have to make adjustments to BDRY_VAR in
> Simulation_adjustEvolution.
>
> On Fri, Aug 28, 2020 at 9:15 AM Thibault Goudal <
> thibault.goudal at u-bordeaux.fr> wrote:
>
>> Hi guys,
>> After fixing my mesh reconstruction, I've noticed that if I irradiate a
>> single layer with a vaccum volume behind, there's some expansion in this
>> vacuum before any shock breaks out.
>> If I want to design an experiment with an initial solid target, I would
>> like this material to be freezed. I discused with Hydra users and it came
>> up that they use a special mode called "Quiet Start" to fix the solid
>> materials but I don't know if we have such a tool on FLASH.
>> Does anybody know how we could solve this issue?
>>
>> --
>> Thibault Goudal
>> PhD Student CEA
>> CELIA CNRS UMR5107 laboratory
>> +33664160842
>> thibault.goudal at u-bordeaux.fr
>>
>
>
> --
> Eddie Hansen, PhD
> Postdoctoral Associate
> University of Rochester
> 607-341-6126 | Flash Center
>
>

-- 
Eddie Hansen, PhD
Postdoctoral Associate
University of Rochester
607-341-6126 | Flash Center
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