Re: [mesa-users] solar calibration

[Aaron D. <aar...@gm...>]

Hi Zahra,

Two questions:

1.  What type of starting model did you use when you ran the solar
calibration job?  If not, you will need to use the same starting model.

Did you use all other inlist parameters exactly the same as in the solar
calibration run?  If not, then you'll need to use all the same settings.

Even with everything set up as in the solar calibration job, you may still
find *slightly* different results if you are using OpenMP.  But that effect
is not big enough to explain the difference in the depth of the convective
envelope that you reported.

Aaron



On Sun, Apr 17, 2011 at 1:01 AM, zahra altaha motahar <zam...@ya...>wrote:

> Hi,
>
> I have used the calibration inlist for finding the best initial Z, initial
> Y, and mixing length parameter that reproduce the solar luminosity and
> radius at solar age. After fine tuning and running the code and calibration
> several times, I could find the results as bellow
>
>                        Final Results
>                     <=================>
>                     Log10(R/Rsun) = -3.97536E-06
>                     Log10(L/Lsun) = -2.83505E-07
>                     log center Rho=  2.18996E+00
>                     log center P  =  1.73713E+01
>                     log center T  =  7.19736E+00
>                     center H      =  3.27475E-01
>                     center He4    =  6.50021E-01
>                     center Z      =  2.25040E-02
>                     surface H     =  7.36643E-01
>                     surface He4   =  2.45284E-01
>                     surface Z     =  1.80726E-02
>                     Rcz / Rsun    =  7.15706E-01
>                     Rov / Rsun    =  0.00000E+00
>
>                     rms (m-s)/s   =  1.43664E-03
>
> Then, I used the final Z, Y and alpha in my solar inlist and run the code
> up to solar age without calibration. The results were different in accuracy
> and the base of convective zone: 0.71659. Why with the same initial
> parameter that I found with calibration, MESA produce different L, R and
> R_cz?
>
>
> Regards,
> Zahra A. Motahar
> Master Candidate in Astrophysics
> Physics Department
> Faculty of Science
> University of Malaya
> za_...@si...
>
>
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