[mesa-users] Tricks to create CO white dwarfs

[Pablo Marchant]

Pgas/P ~ 0.2 at its minimum. I am precisely looking for these "engineering
tricks", and whether or not others have found successful ways to do this in
other, less tricky ways. Something like playing with the solver tolerances
in just the right way to boost a bit performance.

On Sat, May 16, 2015 at 1:03 PM, Aaron Dotter <aaron.dotter at gmail.com>
wrote:

> Hi Pablo,
>
> What are the initial and current masses of the stars when you have
> convergence issues?
>
> Do you find regions in these stars where Pgas/P << 1?
>
> If you're experiencing this sort of problem, there are a few "engineering"
> tricks, like limiting max opacity or MLT++, that will get you through
> faster.  Otherwise you need patience.
>
> Aaron
>
>
> On Saturday, May 16, 2015, Pablo Marchant <pamarca at gmail.com> wrote:
>
>> Hi all. For the last days I've been playing with some systems that will
>> end their lives as CO white dwarfs, but I always run into convergence
>> problems close to stripping the CO core. At that point maybe it manages to
>> go through after several hundred thousand steps, but that makes it a bit
>> unpractical if I want to model several. So I was wondering if others with
>> experience on the topic could share their tricks to get through this phase.
>>
>> I know the test_suite case make_co_wd makes use of MLT++, so in
>> particular I'm looking to find if others have managed to get things to work
>> with plain old MLT.
>>
>> Cheers!
>>
>> --
>> Pablo Marchant Campos
>> M.Sc on Astrophysics, Universidad Católica de Chile
>> PhD student, Argelander-Institut für Astronomie
>>
>


-- 
Pablo Marchant Campos
M.Sc on Astrophysics, Universidad Católica de Chile
PhD student, Argelander-Institut für Astronomie
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