[FLASH-USERS] A question about the Hydro/WindTunnel solver

[Ludmila María Rechiman]

Thank you Klaus for your help, I will try what you suggest.

Thank you very much indeed

L

On Mon, Mar 28, 2016 at 11:12 PM, Klaus Weide <klaus at flash.uchicago.edu>
wrote:

> On Mon, 28 Mar 2016, Ludmila María Rechiman wrote:
>
> > Dear community of FLASH users and developers,
> >                                                                         I
> > am new trying to use Hydro libraries of
> > FLASH code (/FLASH4.3/source/physics/Hydro/HydroMain/).
> > In particular I was able to simulate the WindTunnel example. The default
> > size of is -nxb=8 -nyb=8 and the solutions does not seems to capture the
> > shokwaves in a sharp manner.
>
> I suspect that this may be just a matter of your visualization.
>
> For 2D data, you should start with adding a "Pseudocolor" plot in Visit,
> not a "Volume" plot.
>
> > Then I decided to run another simulation using
> > -nxb=64 -nyb=64 in order to get a well defined shockwave, but the
> solution
> > is still blurred (I attach a quick view). The AMR mesh seems to have very
> > tiny cells to get a good resolution, but by increasing the parameters
> -nxb
> > -nyb up to 64  I can not get better results.
>
> It is generally preferable to leave NXB and NYB smaller (something like 8
> or 16) and just increase lrefine_max to get higher resolution.
>
> Klaus




-- 
ludmila
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