[FLASH-USERS] Flux Corrected Species Handling in 4.3

[Klaus Weide]

On Mon, 24 Oct 2016, Jason Galyardt wrote:

> Dear FLASH Users,
> 
> Has anyone evaluated the effects of the new flux corrected species handling
> in FLASH 4.3 (runtime parameter hy_fullSpecMsFluxHandling, defaults to
> .true.)? Is this a 10% level correction for kpc size domains? I ask because
> it's currently not practical for me to test this in my own simulations.

I don't think there is a general rule about what kind of impact can be 
expected from this code change.

But I hope sombody will share their experience. 

> The follow-up question is then, what happens if this feature is turned off
> (hy_fullSpecMsFluxHandling = .false.)? Do we get the same behavior as
> previous versions of FLASH?

That is the intention - when hy_fullSpecMsFluxHandling is off, fluxes 
of species and mass fractions should be handled essentially as in the 
previous version.

Klaus