[FLASH-USERS] confusion regarding abar and zbar

[Jonathan Slavin]

Okay.  I see that now.  Sorry to be so blind.  I was confused by the table
that indicates cases where the temperatures are assumed to be all equal
(which is odd for a multi-temperature gamma).  So, any recommendations for
a minimal multi-temperature run?  Is there any significant difference
between the various 1-T modes? (For example MODE_DENS_TEMP, MODE_DENS_EI,
etc.)

Jon

On Wed, Sep 16, 2015 at 11:56 AM, John ZuHone <jzuhone at space.mit.edu> wrote:

> Hi Jon,
>
> Unless I am incorrect this section refers to the “multi-temperature” Gamma
> EOS. Were you trying to use that or just the standard single-temperature
> version?
>
> John
>
> On Sep 16, 2015, at 11:52 AM, Jonathan Slavin <jslavin at cfa.harvard.edu>
> wrote:
>
> ​Hi Dean,
>
> But if you look in section 15.4.1 it states something different:
> "​This EOS can include contributions from radiation, partially or
> completely ionized nuclei, and electrons. The desired (constant) ionization
> level $ {\bar Z}$ of the nuclei should be specified with the
> eos_singleSpeciesZ runtime parameter."
>
> Jon
>
> On Wed, Sep 16, 2015 at 11:30 AM, Dean Townsley <Dean.M.Townsley at ua.edu>
> wrote:
>
>> Hi Johnathan,
>>
>> The gamma-law EOS is just a simple ideal gas as described in section 15.2
>> of the user's guide:
>>
>> http://flash.uchicago.edu/site/flashcode/user_support/flash4_ug_4p3/node22.html#SECTION06320000000000000000
>>
>> As you can see from the expressions there, zbar is not used at all.  You
>> should set abar so that these expressions give what you expect.  This is
>> what John Zuhone and Tomek I believe are suggesting.
>>
>> Hopefully that helps clarify,
>> Dean
>>
>
>
>
>
> --
> ________________________________________________________
> 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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