[Mesa-users] Adiabatic temperature gradient in overshoot mixing regions

[Thomas Steindl]

Hello Chris,

I think the papers from Michielsen et al. (https://ui.adsabs.harvard.edu/abs/2019A%26A...628A..76M/abstract, https://ui.adsabs.harvard.edu/abs/2021A%26A...650A.175M/abstract) are a good place to start. You should be able to fetch their inlists/run_star_extras from the mesa market place (http://cococubed.asu.edu/mesa_market/inlists.html <http://cococubed.asu.edu/mesa_market/inlists.html>).

Best, 
Thomas
__________________________________________________________________

Thomas Steindl, MSc
University of Innsbruck | Institute for Astro- and Particle Physics
Tel: +43 512507 52031
Mail: thomas.steindl at uibk.ac.at
Homepage: www.thomassteindl.com

> Am 13.08.2021 um 19:43 schrieb Christopher Lindsay via Mesa-users <mesa-users at lists.mesastar.org>:
> 
> Hi All, 
> 
> I am working on a project studying the effects of envelope overshoot on the oscillation properties of red giant stars and currently I'm trying to change the runstarextras file and force the temperature gradient to be adiabatic inside of the step overshoot region, within a set distance from the convective boundary. Currently I think I am changing the temperature gradient at grid points within [f_overshoot * pressure scale height] of the convective boundary after every timestep but looking at the resulting mixing and temperature gradient profiles it doesn't look like my method is working. 
> 
> Has anyone tried changing the temperature gradient within the convective overshoot region and gotten the mixing and temperature gradient profiles to match up such that the high mixing region coincides with the region where (nabla-nabla_adiabatic = 0)? 
> 
> 
> Thanks, 
> Chris 
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