[mesa-users] hydro_failed_to_converge

[Jaime Villaseñor]

Pablo, the evolution stops around 4 hrs of orbital period, this is after
1.7 Gyr, and this happens before the start of mass transfer.
I just check it with the 5527 version and it seems to be reproducing the
complete evolution of the system, but I'm still getting a similar message
at the end, and it reaches a weird donor mass.
This is the last output:

*save LOGS1/profile34.data for model 1700
save photos1/x700 for model 1700
                star               model                 age
 mass             lg_mdot           (r-rl)/rl          last photo
                   1                1700     1.917065828E+09
2.585151256E-04    -8.790385916E+00    -9.999442800E-01        photos1/x700
                   1                1701     1.917065828E+09
2.585151256E-04    -8.790385916E+00    -9.999442800E-01        photos1/x700
                                            num_backups          11
                                     max_number_backups          10

 stopping because of convergence problems num_backups > max_number_backups


 terminated evolution because nonzero_ierr*
*
*
One last thing I've noticed is that I can't find the orbital period between
the data. In previous versions there was a *period_hr *output. Is this been
removed or I'm just missing it?

Best, Jaime
*
*
*
*


2013/10/12 Pablo Marchant <pamarca at gmail.com>

> Jaime, I'm not quite able to reproduce your problem using mesa 5456. Could
> you expand a bit saying at which point in the evolution you get this
> convergence problems, and could you try out to see if you still have issues
> in the latest mesa version (5527)?
>
> In my case what I see is that I get issues when the donor mass becomes
> very small, but that happens at around 10 times the Hubble time, so I think
> it's hardly relevant.
>
>
> On Fri, Oct 11, 2013 at 6:00 PM, Jaime Villaseñor <
> jaime.villasenor at postgrado.uv.cl> wrote:
>
>> Hi Pablo, thanks for replying.
>> Here are my inlists. It's the first time I try this test, so I've set
>> everything as default except for the masses and orbital period.
>>
>> Jaime
>>
>> 2013/10/11 Pablo Marchant <pamarca at gmail.com>:
>> > Jaime, could you please share your inlists?
>> >
>> >
>> > On Fri, Oct 11, 2013 at 4:54 PM, Jaime Villaseñor
>> > <jaime.villasenor at postgrado.uv.cl> wrote:
>> >>
>> >> Dear mesa users:
>> >>
>> >> I'm running the binary_donor_only_implicit_mdot test and getting the
>> >> next message:
>> >>
>> >>                                             num_backups          21
>> >>                                      max_number_backups          20
>> >>
>> >>  stopping because of convergence problems num_backups >
>> max_number_backups
>> >>
>> >>  terminated evolution because hydro_failed_to_converge
>> >>
>> >> I've already increased the max_number_backups.
>> >> I'm using mesa version 5329. Any comments on how to overcome this
>> >> problem would be highly appreciated.
>> >>
>> >> Thanks, Jaime.
>> >>
>> >>
>> >> --
>> >> Jaime Villaseñor
>> >> Master's student in Astrophysics
>> >> Universidad de Valparaíso
>> >>
>> >>
>> >>
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>> >
>> >
>> > --
>> > Pablo Marchant Campos
>> > M.Sc on Astrophysics, Universidad Católica de Chile
>> > PhD student, Argelander-Institut für Astronomie
>>
>>
>>
>> --
>> Jaime Villaseñor
>> Master's student in Astrophysics
>> Universidad de Valparaíso
>>
>
>
>
> --
> Pablo Marchant Campos
> M.Sc on Astrophysics, Universidad Católica de Chile
> PhD student, Argelander-Institut für Astronomie
>



-- 
Jaime Villaseñor
Master's student in Astrophysics
Universidad de Valparaíso
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