[Mesa-users] Best ways to improve calculation accuracy?

[anne.thoul at uliege.be]

Hi Earl,

A brute force way to improve the accuracy when you want to interpolate between models is to decrease the timestep. 
I found that quite often, the default tilmestep is too large; decreasing max_years_for_timestep  often helps. 
There are quite a lot of other timestep controls that you can use.

Cheers
Anne






> Le 5 janv. 2019 à 14:33, Earl Bellinger via Mesa-users <mesa-users at lists.mesastar.org> a écrit :
> 
> Hi mesa-users, 
> 
> What are the best ways to improve the accuracy of MESA calculations? 
> 
> My go-to fixes are to 
> 1. decrease mesh_delta_coeff 
> 2. decrease varcontrol_target 
> 3. set delta_lgTeff_limit and delta_lgL_limit 
> ...but surely there are some more "tricks" people know about. 
> 
> (My personal motivation: I am playing around with interpolating between MESA models [all on the main sequence], and I find some unexpectedly large deviations. Fiddling with the above controls has helped but not totally solved the problem.) 
> 
> Best regards, 
> Earl 
> 
> 
> Earl Patrick Bellinger, Ph.D. 
> Postdoctoral Research Fellow 
> Stellar Astrophysics Centre 
> Aarhus University 
> Web: https://earlbellinger.com <https://earlbellinger.com/> 
> 
> _______________________________________________
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