[FLASH-USERS] Are shockwaves standard in Flash

[Seyit Hocuk]

Hi Adam and Tomek

Yes I see in the hydro_sweep that the 1-d one is always included in the 
PPM. To get a more accurate shock detect, it says to include a multi 
dimensional one which you can do by setting that parameter to true.

Thanks, for the quick replies.
Seyit




Tomasz Plewa wrote:
> Seit -
>
> Shocks are automatically included and resolved in at least basic hydro 
> solver, PPM.
>
> There is a module designed to detect multidimensional shocks:
>
> FLASH2: shock_detect.F90
> FLASH3: Hydro_detectShock.F90
>
> This module was directly adopted from Woodward & Porter's sPPM code.
>
> One dimensional shock detection is a part PPM (see Colella & Woodward 
> paper; essentially look for pressure jumps of order of 0.3 associated 
> with negative velocity divergence).
>
> Hope this helps.
>
> Best -
>
> Tomek