[Mesa-users] ascending metallicity problem

[Croxmor Moraga]

I have to thank you, it actually worked, but now I have to reduce my
simulations to the first two inlist instead of passing to the 3rd one after
the He-flash, depending of the case.
It takes some more steps to reach where I want, but at least it completes
the simulation.
Thanks Francis.

El mar., 10 dic. 2019 a las 20:46, Croxmor Moraga (<
rodrigo.moraga.merino at gmail.com>) escribió:

> Thanks I will try it.
>
> El mar., 10 dic. 2019 19:31, Francis Timmes <fxt44 at mac.com> escribió:
>
>> the error message from the inlists supplied is
>>
>> stop because power_he_burn >= power_he_burn_upper_limit
>>     0.1018357506E+10    0.1000000000E+10
>>
>> as inlist_project sets power_he_burn_upper_limit = 1e9.
>>
>> ~~~
>>
>> getting through the he-flash takes better time resolution and thus
>> patience.
>> setting
>>
>> !power_he_burn_upper_limit = 1.0d9
>> varcontrol_target = 5.0d-5
>> max_model_number = 40000
>>
>> in inlist_projesct allows an r12115 run to get
>> well past the initial, and strongest, he-flash.
>>
>> fxt
>>
>>
>>
>>
>>
>>
>> > On Dec 10, 2019, at 11:18 AM, Croxmor Moraga via Mesa-users <
>> mesa-users at lists.mesastar.org> wrote:
>> >
>> > Ok. In a more extended explanation:
>> > I am running a model for a low mass star, starting with a proto star,
>> until it reaches the ZAMS state, then it changes to the next inlist which
>> continue evolving the star until it reachs the He-flash, then once it have
>> done that, it changes to the last inlist which make the model evolve until
>> it's luminosity reaches the order of the 0.1 solar luminosities. This
>> evolution has been done using both a simplified version of the reimers mass
>> loss formula based on the paper of D'Cruz and Dorman et. al. 1995 and a
>> more modern version of this equation based on Catelan. et al. 2013. Which
>> are writed in my standard run extras. Everything was going ok, but since I
>> stard testing the High metallicity cases I mentioned before, the model
>> stops soon after it reaches the He-flash, and doesn't matter how many times
>> I expand the min limit for dt, it is always the same, showing this:
>> >  retry    1854
>> >  gravedad superficial (cm/seg**2) =   1.0316990162999944
>> >  m dot (msun/year) =   3.1658163634510211E-008
>> >                                                      dt
>> 7.7255210522695602-106
>> >                                      min_timestep_limit
>> 1.0000000000000000D-99
>> >
>> >  stopping because of problems dt < min_timestep_limit
>> >
>> >
>> > terminated evolution: cannot find acceptable model
>> >
>> > termination code: min_timestep_limit
>> > DATE: 2019-12-10
>> > TIME: 13:07:51
>> > I hope this helps to have a better understanding of what my problem is.
>> > From beforehand, thank you all of you.
>> >
>> > El lun., 9 dic. 2019 a las 20:37, Josiah Schwab (<jwschwab at ucsc.edu>)
>> escribió:
>> > But recently once I perfomed this simulations for a metalicity of
>> [Fe/H] = 0 and over, my star models trowns an error short after the star
>> reaches the He-flash, and I have tried a lot fo things to repair this, but
>> I have failed.
>> >
>> > Please describe the error and briefly describe what you tried.
>> >
>> > Your inlists are appreciated, but it is helpful for us to get some feel
>> of what is going on without having to run them.
>> >
>> > Josiah
>> > _______________________________________________
>> > mesa-users at lists.mesastar.org
>> > https://lists.mesastar.org/mailman/listinfo/mesa-users
>> >
>>
>>
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