[Mesa-users] Planet Radius and EOS question (Isaac Malsky)

[Isaac Malsky]

Hi Dr. Kubyshinka and Dr. Paxton,

Thanks so much for the advice, this is incredibly helpful!

Is there an equivalent eos control for the the newest version of MESA? I'm
running 12778, and I only see the use_eosDT2 = .false. control for earlier
versions like 10398. The radius dip definitely does seem to be because of
some eos issues when I'm pushing the most extreme models.

Best,
Isaac

On Mon, May 11, 2020 at 11:23 AM Bill Paxton <paxton at kitp.ucsb.edu> wrote:

>
> On May 11, 2020, at 3:58 AM, Daria Kubyshkina via Mesa-users <
> mesa-users at lists.mesastar.org> wrote:
>
> The problem disappears if setting *use_eosDT2 = .false. *In
> controls.defaults it is actually stated that this option does not apply if
>  *lnPgas_flag* is true, but it seems to be wrong. With the *use_eosDT2* flag being
> false, the radii behave as in older versions of MESA.
>
>
> Thanks for the excellent advice.  Concerning the strange need to turn off
> DT2 even when lnPgas_flag is true - it was a surprise to me too!   Turns
> out in certain situations the system decides to bail out of the lnPgas
> tables to search for an answer using the non-lnPgas eos.  And those are the
> cases that cause the problems since they seems to fail with DT2 but are ok
> without it.
>
> You might try the current public release of mesa (12778).  You should be
> pleased to find that DT2 has gone away (and will not be coming back!).
>
> -B
>
>
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