[Mesa-users] Massive Stars and Large Networks

[Rob Farmer]

Hi
I suggest looking at the models here
https://ui.adsabs.harvard.edu/abs/2021ApJ...923..214F/abstract which got
11-45 msun models to CC. These were with a small network but I have also
used these inlists with a larger net as well.

split_burn is the way to go these days, but I would recommend using at
least 12115  or 12778 as I have fixed many bugs present in the earlier
releases, that you will hit with a large net and with split_burn.

Rob

On Tue, 12 Jul 2022 at 19:45, Sandoval, Chloe via Mesa-users <
mesa-users at lists.mesastar.org> wrote:

> Hi Mesa Users,
>
> I'm reaching out not for direct problem solving but more for a discussion
> or tips and tricks for those of you who use MESA for massive stars with
> large networks.
>
> Is anyone successfully using large networks ( > 150 species) to collapse
> massive stars? If so, what are your secrets, please share them?
>
> I've had very inconsistent success with models reaching collapse
> (fe_infall = 1000 km/s) in the mass range of 10M_sun - 16 M_sun using
> mesa_204.net and have had many successes with masses larger than 16M_sun.
> I've used multiple revisions as early as r10398 and as new as r117**
> whichever one was updated to fix the memory leak. I've used a variety of
> networks and test cases, used test case inlists, split-burning, modeled
> inlists after the Farmer 2015 paper, adjusted a variety of tolerances,
> adjusting mixing and convective overshooting parameters, etc., etc.. Many
> of my models grind themself to a halt, fail in the hydro, or get extremely
> small time steps and make no progress.
>
> Thank you everyone for your time! Looking forward to hearing your thoughts!
>
> Chloe Sandoval
> *she, her, hers*
> Graduate Research Assistant
> GSS Physics Department Representative
> Office: ORNL 4500S R211
> _______________________________________________
> mesa-users at lists.mesastar.org
> https://lists.mesastar.org/mailman/listinfo/mesa-users
>
>
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