Re: mesa-users] Regarding the MESA EOS

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Hi Aaron,<br>
<br>
I have noticed that with regards to the pressure, but it appears not to
be the case for the internal energy, chiT, chiRho and Cv for example. I
need these quantities as evaluated for the gas only.&nbsp; In the code that
I use,&nbsp; I do not assume LTE and treat the radiation energy density and
radiation pressure separately from the gas.<br>
<br>
Thanks for your input, and the additional info. I am keen on using the
mesa routines, as it has all the top notch EOS in one place ...<br>
<br>
Ricky<br>
<br>
Aaron Dotter wrote:
<blockquote
 cite="mid:95e...@ma..."
 type="cite">Hi Ricky,
  <div><br>
  </div>
  <div>Actually, the eos module works with Pgas, see
mesa/eos/public/eos_def.f for a list of variables that it works with.</div>
  <div><br>
  </div>
  <div>So, for example, the eos call that returns P(Rho,T) = eosDT_get
actually returns Pgas. &nbsp;See also mesa/eos/public/eos_lib.f for a list
of different eos subroutines. &nbsp;A function called Radiation_Pressure(T)
is included in eos_lib as a convenience.</div>
  <div><br>
  </div>
  <div>Best wishes,</div>
  <div>Aaron</div>
  <div><br>
  </div>
  <div><br>
  </div>
  <div><br>
  <br>
  <div class="gmail_quote">On Mon, Feb 22, 2010 at 1:25 AM, Ricky
Olivier <span dir="ltr">&lt;<a moz-do-not-send="true"
 href="mailto:ol...@sa...">ol...@sa...</a>&gt;</span>
wrote:<br>
  <blockquote class="gmail_quote"
 style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hi,<br>
    <br>
I am interested in using the MESA EOS and Opacity modules for use with<br>
my stellar pulsation code. As such, I have been poking around the MESA<br>
source files, and hacked the sample_eos.f source file to generate EOS<br>
tables in the format I need. However, it seems the MESA EOS routines<br>
automatically add the contribution due to radiation &nbsp;into the<br>
thermodynamic variables. I could easily subtract the contribution to<br>
radiation out, but is there a way of switching it off inside MESA? I<br>
treat &nbsp;radiation separately from the gas in the code I use.<br>
    <br>
Can anyone help me with this?<br>
    <br>
Regards,<br>
Ricky<br>
    <br>
    <br>
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