[Mesa-users] do_element_diffusion = .false. != diffusion_class_factor(:) = 0

[Earl Bellinger]

By the way, MESA version 10108



On Thu, Dec 14, 2017 at 10:58 AM, Earl Bellinger <bellinger at mps.mpg.de> wrote:
> Dear mesa-users,
>
> I am wondering if someone can help me to understand why turning off
> element diffusion yields a different result than setting the diffusion
> factor to 0? I would expect, perhaps naively, for them to yield the
> same result.
>
> Some simple inlists are attached for calculating the first Gyr of
> evolution for a solar mass track. There's a small difference in
> several quantities, for example the effective temperature changes from
> 5643.763 to 5643.913. This is somewhat different from running it with
> diffusion class factor of 1, which gives Teff of 5643.915.
>
> Best regards,
> Earl Bellinger
>
> ---
> earlbellinger.github.io
> Earl Bellinger, Ph.D. Candidate
> Stellar Ages & Galactic Evolution Group
> Max Planck Institute for Solar System Research