[mesa-users] Fwd: Convective Turnover Time

[Kenny Van]

Thanks for pointing me in the right direction Bill. I've run into a bit of
reading at the moment going through the variables inside star_data and
binary_data. Would anyone happen to know the variable name for the size dr
of each cell? I've found the outer radius value of cell k with the variable
r(k). But I was just wondering if there was already one defined?

Thanks

---------- Forwarded message ----------
From: Bill Wolf <wmwolf at physics.ucsb.edu>
Date: Wed, Jun 15, 2016 at 1:17 PM
Subject: Re: [mesa-users] Convective Turnover Time
To: Kenny Van <kvan at ualberta.ca>


Hi Kenny,

There are definitely ways to get at the star_info structure for individual
stars in run_binary_extras. I’d look at the excellent guide by Sterl
Phinney from last year’s summer school:

http://www.mesastar.org/teaching-materials/2015-mesa-summer-school

Look at Phinney lecture 1 and Phinney lecture 2, particular at the lab
walkthroughs.

Note, though, that I’m assuming you can do this from within the proper
run_binary_extras channels. I would advise you not mess around with
anything in mesa/binary/private or any “private” directory, for that
matter. Doing so makes reproducibility difficult, makes it so your work
directory is overly dependent on your current installation (not even just
the version) of MESA, and is generally just “not the MESA way”.

mesa/binary/other/mod_other_binary_jdot.f90 seems like the correct starting
point for such an adventure.

Regards,

Bill

________________________
William Wolf
wmwolf at physics.ucsb.edu

UCSB Department of Physics

On June 14, 2016 at 4:13:53 PM, Kenny Van (kvan at ualberta.ca) wrote:

Hi,

I was looking into the additional effects that turnover time would have on
magnetic braking in a system. While looking through MESA I noticed that the
profile output appears to contain the required parameters to calculate the
turnover time at various points in the mesh. The profile output can be set
to output the convective velocity, the radius, and the dr of each cell.

I was looking through the binary section of MESA and there doesn't appear
to be any convective velocity term. Is it possible to have the
binary_jdot.f90 code be able to pull values from the single star profile
calculations? I'm slowly trying to figure out how to approach this addon to
the magnetic braking but any advice would greatly help.

Thanks
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