[mesa-users] contradicting Kipp and mixing pgstar plots
Ehsan Moravveji
e.moravveji at gmail.com
Tue Aug 23 04:07:52 EDT 2016
Thanks Rob for your hint.
Best
Ehsan.
> On 22 Aug 2016, at 20:02, Robert Farmer <rjfarmer at asu.edu> wrote:
>
> Hi
> So the best thing to do when debugging is too remove everything and simplify the problem, than add things back slowly to see what changes. Doing this shows me that the line which causes the issue is:
>
> D_mix_ov_limit
>
> which is:
> !### D_mix_ov_limit
>
> ! Overshooting shuts off when the exponential decay has dropped the diffusion
> ! coefficient to this level.
>
>
> Which you set in three places in your basic.inlist. MESA will use the last one which is 0 thus overshoot never shuts off, so the Kip plot shows it out to the edge. For, the mixing plot if you set the mixing_ymin to say -30 it shows the overshoot extending outwards to the edge of the star.
>
> Rob
>
>
> On Mon, Aug 22, 2016 at 7:59 AM, Ehsan Moravveji <e.moravveji at gmail.com <mailto:e.moravveji at gmail.com>> wrote:
> Dear mesa-users, and pgstar lovers ;-)
>
> As a yet-another-fan, I have spent my morning looking at the “Kipp" and the “mixing” diagrams for a 12 Msun model with r.8845. The inlists are attached.
>
> The mixing diagram shows that the overshoot region stretches between ~3.5 and 5 Msun in mass coordinate. However, the Kipp diagram shows that the overshoot (white-ish) region extends almost the whole way to the surface. I played around with several controls options, which I thought make some sense, but neither actually helped.
>
> So, can any of pgstar fans help me out understand this difference?
> Am I making any mistake in my inlists that give a conflicting Kipp?
>
> Best wishes,
> Ehsan.
>
>
>
>
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