[mesa-users] turbulent diffusion

[Aaron Dotter]

Hi Bill,

Yes, I'll send a revised version tomorrow.  I've also added a new feature
to "turbulent diffusion" that you can include.  Or not!

Gee, I don't know.  I agree that we should do away with anonymous mixing,
which sounds mysterious.  On the other hand, there should be an other
category for those that don't fall within the other categories.  Overshoot
purists might not call this overshoot mixing . . . or would they?

Aaron

On Tue, Jun 7, 2016 at 3:10 PM, Bill Paxton <paxton at kitp.ucsb.edu> wrote:

> Hi,
>
> Please send me a revised subroutine add_turbulent_diffusion so I can merge
> it into the sources.
>
> Also, concerning anonymous_mixing.  The only current use of that is
> in subroutine add_radiation_turbulence.
>
> We don't have a separate category for turbulent mixing -- as you probably
> noticed, add_turbulent_diffusion uses overshoot_mixing.
> Do you suggest we change add_radiation_turbulence to get rid
> of anonymous_mixing?  if so, should it change to overshoot_mixing also?
> I'm trying to cut down on the number of mixing types so reduce the chaos
> --- ideally i'd like to just delete anonymous_mixing for the next release.
>
> suggestions?
>
> -Bill
>
>
>
>
> On Jun 7, 2016, at 11:57 AM, Aaron Dotter wrote:
>
> Hi Bill,
>
>
> I'll make that change in the mesa sources.
>>
>
> Thanks!
>
>
>
>> Is the only change is to replace 'anonymous_mixing' by 'no_mixing'?  Your
>> email also changes loc-1 to loc+1; is that also part of your suggested
>> change?
>>
>
> Yes, I would change loc-1 to loc+1 to get below the lower convective
> boundary.
>
> I think I would remove the if statement altogether.  We already know that
> we're at a convective boundary.  My question about a better way to do this
> is that below the convective boundary could be any of the other types of
> mixing (semiconvection, overshoot, thermohaline).  The inner subroutine
> checks against three types and either overrides them or adds them
> accordingly.  The only place that anonymous_mixing seems to be used is in
> the preceding routine add_radiation_turbulence.
>
>
> Aaron
>
>
>
>
>
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