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Re: [mesa-users] Converging an AGSS05 Solar model
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From: Aldo S. <al...@ic...> - 2016-08-10 15:42:41
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Hi Farag, check in detail your inputs (tabulated abundances, your target values, etc). It's not harder for codes to give Z/X for AGS05 (just one S here) and L, R = 1 than for any other abundances. Cheers. Aldo On 10 Aug, 2016, at 5:10 PM, Farag, Ebraheem Khaled wrote: > Hello, > > I will begin trying to using the solar_calibration model. Also, When I set: > > create_pre_main_sequence_model = .true. > > the model errors and fails to converge no matter the mixing parameter or initial abundances I try. Nonetheless, thank you all for your help, and please let me know if you are able to successfully converge an AGS05 model if possible. > > Ebraheem > From: Aaron Dotter <aar...@gm...> > Sent: Wednesday, August 10, 2016 9:02 AM > To: Robert Farmer > Cc: Farag, Ebraheem Khaled; mes...@li... group > Subject: Re: [mesa-users] Converging an AGSS05 Solar model > > Hi Ebraheem, > > It is more difficult to fit the solar sound speed profile with the Asplund et al. (2004) solar abundances than it is with the older Grevesse & Noels (1993) or Grevesse & Sauval (1998). This is a common result in the literature and has been the subject of many studies. See, for example, these: > > http://adsabs.harvard.edu/abs/2005ApJ...618.1049B > http://adsabs.harvard.edu/abs/2009ApJ...705L.123S > > > Aaron > > On Tue, Aug 9, 2016 at 6:56 PM, Robert Farmer <rjf...@as...> wrote: > Hi > > >initial_h1 =.0.6805 > Hopefully that is just a typo in the file you sent but it should be: (you have an extra .) > initial_h1 =0.6805 > > >Still, I can't get the correct surface abundances of 0.0165=z/x along with L =1 and R=1. > > How close do you get? Also what happens if you run from the pre-MS with your chosen composition? In star_job set: > > create_pre_main_sequence_model = .true. > > You might want to look at and run the solar_calibration (takes a while to run) with your choice of AGS05. This tries to make the "best" solar model by tweaking the inputs, look for its vary_ options in inlist_astero_search_controls and matching the model to the solar data. > > Rob > > > > On Tue, Aug 9, 2016 at 8:32 AM, Farag, Ebraheem Khaled <far...@la...> wrote: > Hello all, > > I'm attempting to converge an AGS05 model of the sun using the example_solar_model in the test_suite. This has worked for all other Opacities and abundances including AGSS09, GS_98, and GN_93. My current problem is that I can't seem to converge the model for the AGS05 opacities and abundances. > > I have set: > z_frac = 5(Ags05 z fracs) > kappa_file_prefix = 'a05+Ne' > kappa_lowT_prefix = 'lowT_fa05_ags04' ! for lower temperatures. > ------------------------ > > Still, I can't get the correct surface abundances of 0.0165=z/x along with L =1 and R=1. The one time I got very close, the sound speeds looked nothing like I believe they should(sound_standard.png). > > ****Typically, after changing the Z-fracs and kappa files, I adjust the initial H1 and He4 along with he mixing length alpha to converge the model.*** > > Any tips? > > Thanks, > > Ebraheem > > ------------------------------------------------------------------------------ > What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic > patterns at an interface-level. Reveals which users, apps, and protocols are > consuming the most bandwidth. Provides multi-vendor support for NetFlow, > J-Flow, sFlow and other flows. Make informed decisions using capacity > planning reports. http://sdm.link/zohodev2dev > _______________________________________________ > mesa-users mailing list > mes...@li... > https://lists.sourceforge.net/lists/listinfo/mesa-users > > > > ------------------------------------------------------------------------------ > What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic > patterns at an interface-level. Reveals which users, apps, and protocols are > consuming the most bandwidth. Provides multi-vendor support for NetFlow, > J-Flow, sFlow and other flows. Make informed decisions using capacity > planning reports. http://sdm.link/zohodev2dev > _______________________________________________ > mesa-users mailing list > mes...@li... > https://lists.sourceforge.net/lists/listinfo/mesa-users > > > ------------------------------------------------------------------------------ > What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic > patterns at an interface-level. Reveals which users, apps, and protocols are > consuming the most bandwidth. Provides multi-vendor support for NetFlow, > J-Flow, sFlow and other flows. Make informed decisions using capacity > planning reports. http://sdm.link/zohodev2dev_______________________________________________ > mesa-users mailing list > mes...@li... > https://lists.sourceforge.net/lists/listinfo/mesa-users |
