[FLASH-USERS] Laser across a 1D domain

[David Blackman]

I'm not sure I understand exactly what you are trying to do. What you 
asking doesn't seem to make sense. The laser will travel along the 
radius, yet your super Gaussian profile will be spatially varying at 90 
degrees to the radius, and you want to do it in 1D. I suspect you want a 
polar geometry with the laser traveling in from the radius, right?

Maybe look at the 2D laser slab? You might be able to put something 
together with cylindrical geometry, you could model it as a circle arc 
at the end of a tube with the laser coming in from the longitudinal 
direction maybe? Otherwise a well refined Cartesian grid might be better.

On 16/08/2021 07:59, Thibault Goudal wrote:
> Hello,
> just to contribute to the conversation, in the example1d.par, the 
> geometry is cartesian. I haven't seen explicitely a flash.par input 
> deck including 1D spherical geometry and laser energy deposition.
> I'm not sure that it's possible so far unless mimicing a spherical 
> geometry with cartesian/cylindrical mesh but not confident of catching 
> the physics accurently.
>
> ------------------------------------------------------------------------
> *De: *"Zach Barfield" <zachbarfield60 at gmail.com>
> *À: *"Andy Sha Liao" <andy at f.energy>
> *Cc: *"flash-users" <flash-users at flash.uchicago.edu>
> *Envoyé: *Lundi 16 Août 2021 16:39:16
> *Objet: *Re: [FLASH-USERS] Laser across a 1D domain
>
> Yes,
> In example1d.par the laser is a single ray that propagates along the 
> radius. I am interested in sending a spatially-varying (supergaussian) 
> laser across the radius.
>
> -Zach
>
> On Mon, Aug 16, 2021 at 10:20 AM Andy Sha Liao <andy at f.energy> wrote:
>
>     Zach,
>
>     Have you looked at example1d.par in LaserSlab?
>
>
>     Andy
>
>     On Mon, Aug 16, 2021 at 9:05 AM Zach Barfield
>     <zachbarfield60 at gmail.com <mailto:zachbarfield60 at gmail.com>> wrote:
>
>         Hello all,
>         Does anyone know how to simulate a laser impinging /across/
>         the radius of a 1D radial domain?
>         It seems to me that FLASH has no capability of including
>         dimensionality in the laser beam when using a 1D geometry, is
>         this true?
>
>         I am using a 1D radial domain because I would like to simulate
>         the laser heating of a cylinder of gas with an approximately
>         infinite z-dimension. I am only interested in the temporal
>         evolution of the radial profile.
>
>         Cheers,
>         Zach Barfield
>
>
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