[Mesa-users] Parameters for make_co_wd with higher initial mass (4M+)

[Evan Bauer]

Hi Tyler,

(please keep replies on the mesa-users list so other can see when and how problems get solved)

I’m happy to take a look at the cooling and diffusion tests to see what might be causing problems. What kind of starting model are you using in those cases? Can you send an example of something I could run to reproduce the problems that you’re seeing in those tests?

Cheers,
Evan

> On Mar 23, 2022, at 11:06 PM, TYLER THOMAS FREDRICK <tfredrick at wisc.edu> wrote:
> 
> Hi Evan,
> 
> Yes, I am using r21.12.1. The issues were resolved with the changes you suggested, thank you! On another note, a similar issue occurs with higher masses for the cooling and diffusion tests. Would the same changes also work for them?
> 
> Tyler T. Fredrick
> Midshipman 1/C, USNR
> Undergraduate, Astronomy-Physics,
> Physics, Mathematics, B.S.
> University of Wisconsin-Madison
> 715.550.0100
> From: Evan Bauer <evan.bauer.astro at gmail.com>
> Sent: Wednesday, March 23, 2022 12:28:42 PM
> To: TYLER THOMAS FREDRICK <tfredrick at wisc.edu>
> Cc: mesa-users <mesa-users at lists.mesastar.org>
> Subject: Re: [Mesa-users] Parameters for make_co_wd with higher initial mass (4M+)
>  
> Hi Tyler,
> 
> What MESA version are you using? This test case does struggle for more massive WDs in r21.12.1. I added a few changes since the latest public release that seem to help it for more massive WDs, but those changes haven’t been included in a public release yet. Here’s a summary of the commit:
> https://github.com/MESAHub/mesa/commit/0a955404ffd00164e3bf354a58afa6a4882e4f6e <https://github.com/MESAHub/mesa/commit/0a955404ffd00164e3bf354a58afa6a4882e4f6e>
> 
> If you include those changes in your inlists, does it resolve the problem?
> 
> Cheers,
> Evan
> 
>> On Mar 23, 2022, at 12:31 PM, TYLER THOMAS FREDRICK via Mesa-users <mesa-users at lists.mesastar.org <mailto:mesa-users at lists.mesastar.org>> wrote:
>> 
>> Hi all,
>> 
>> I’m currently using the make_co_wd test case to create white dwarf models of varying initial masses. When reaching an initial mass of 4M, the time step for the calculations drop to a very low amount, and it takes an excessive number of models to get to the final luminosity value. The only parameter from the common inlist that was changed was the initial mass, but I’m assuming there might be other parameters that need to be changed.
>> 
>> I’ve attached the common variable inlist as a reference. Any ideas would be greatly appreciated!
>> 
>> Sincerely,
>> 
>> Tyler 
>> 
>> 
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> 

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