[FLASH-USERS] specifying mean mass per particle

[Slavin, Jonathan]

Great!  I thought it ought to be simple.  Thanks very much John.

On Thu, Sep 3, 2015 at 1:54 PM, John ZuHone <jzuhone at space.mit.edu> wrote:

> Hi Jonathan,
>
> If you’re just using the Gamma EOS, then you should be able to specify
> these two parameters:
>
> eos_singleSpeciesA
> eos_singleSpeciesZ
>
> for the mean molecular weight and mean atomic number of everything in the
> gas. So you’d just calculate whatever those are for your composition and
> then set the parameters to those values in the parameter file.
>
> Best,
>
> John
>
> On Sep 3, 2015, at 1:48 PM, Slavin, Jonathan <jslavin at cfa.harvard.edu>
> wrote:
>
> Hi,
>
> I'm doing simulations of the ISM and so I want to have the gas have a
> composition that is 90% H (by number) and 10% He.  Having looked over the
> documentation, it's still unclear to me how to specify that.  It seems to
> have to do with Eos.F90 and GAMC_VAR, GAME_VAR, but whether I need to edit
> EOS or specify those variables (in flash.par) is unclear to me.  I don't
> want to evolve species independently at this point, so multigamma wouId not
> seem to be necessary.  I have already altered the value of gamma to be
> 5/3.  Any help would be appreciated.
>
> Regards,
> Jon
>
> --
> ________________________________________________________
> Jonathan D. Slavin                 Harvard-Smithsonian CfA
> jslavin at cfa.harvard.edu       60 Garden Street, MS 83
> phone: (617) 496-7981       Cambridge, MA 02138-1516
> cell: (781) 363-0035             USA
> ________________________________________________________
>
>
>


-- 
________________________________________________________
Jonathan D. Slavin                 Harvard-Smithsonian CfA
jslavin at cfa.harvard.edu       60 Garden Street, MS 83
phone: (617) 496-7981       Cambridge, MA 02138-1516
cell: (781) 363-0035             USA
________________________________________________________
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