[mesa-users] Entropy equation used in MESA

[Aaron Dotter]

Hi Sanskriti,

See the code mesa/eos/test/src/sample_eos.f
<https://sourceforge.net/p/mesa/code/HEAD/tree/trunk/eos/test/src/sample_eos.f>,
which is compiled as a part of mesa installation.  That shows how to
initialize the required mesa modules and use the eos routines.

Aaron

On Wed, Aug 3, 2016 at 10:17 AM, Sanskriti Das <dassanskriti at gmail.com>
wrote:

> Hello, the ranges are same as MESA.
>
> I am not sure how to use the whole module of EOS in the code so that I get
> the entropy correctly and use that for further calculations.
>
> Regards,
> Sanskriti
>
> On Wed, Aug 3, 2016 at 6:48 PM, Francis Timmes <fxt44 at mac.com> wrote:
>
>> mesa looks up equation of state quantities from tables,
>> which is why there is not an explicit calculation of
>> thermodynamic quantities.
>>
>> one option is to use mesa's equation of state module in the other code
>> so that there are no differences in, say, the entropy.
>>
>> what range of temperature, density, and composition regime are of
>> interest?
>>
>> fxt
>>
>>
>>
>> > On Aug 3, 2016, at 4:45 AM, Sanskriti Das <dassanskriti at gmail.com>
>> wrote:
>> >
>> > Hi,
>> > I am a masters student involved in a research project. I am using the
>> results of MESA as input of another code. I need to calculate the entropy
>> in that code (along with many other things). But it does not match with
>> what MESA calculates. Apparently the equations I am using to calculate
>> entropy are different from what has been used in MESA.
>> >
>> > Therefore, it would be very helpful if someone can please tell which
>> file contains the equations for calculating entropy. I have searched for it
>> in several files in the EOS module but did not find it.
>> >
>> > Thanking,
>> > Regards,
>> > Sanskriti
>> > (A project student at DAA in TIFR, Mumbai, India)
>> >
>> >
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>>
>>
>
>
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