[mesa-users] Custom diffusion coefficient

[Ehsan Moravveji]

Hi Corentin, 
You need to take a look at /star/defaults/controls.defaults, and specifically:

      set_min_D_mix = .false.
      min_D_mix = 1d3 ! set to your desired value

      am_D_mix_factor = 0.0333333333333333d0 !  set to 0d0

      am_nu_factor = 1  ! set to 0d0
and several other variables in the close neighborhood of what I just mentioned. You also need to keep the semi convective and overshooting values default to zero.

I hope this helps.

Best regards,
Ehsan 



On May 14, 2014, at 1:08 AM, Corentin Cadiou wrote:

> Hello,
> I would like to run a simulation with a custom diffusion coefficient
> (both for angular momentum and chemical species). I therefore started to
> modify run_star_extras.f to force the diffusion coefficients to be equal
> to what I want.
> 
> Where can I find the list of variables that can be modified via
> run_star_extras.f and what would be the best way to remove all diffusion
> processes and set the diffusion coefficient to an arbitrary value?
> -- 
> Corentin Cadiou
> 
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