[mesa-users] hydro_failed_to_converge

Sun Oct 13 12:29:11 EDT 2013

Oh I see. Thanks for the clarification.

About the mass, the donor is reaching a mass of 2.58E-04 which is extremely
low, and I thought, at least for previous versions of mesa, that the
minimum mass achievable was of 0.02 solar masses.

I send you the inlists. Thank you for your help.

Best, Jaime

2013/10/13 Pablo Marchant <pamarca at gmail.com>

> Jaime, the new version saves binary output to binary_history.data in the
> work directory, data is not appended anymore to the donor logs.
>
> Could you send me your inlists on the new version? The inlist struxture
> now is different so the previous one wont work for me to test what youre
> doing.
>
> Also, what do you mean by strange donor mass?
> El 13/10/2013 17:40, "Jaime Villaseñor" <jaime.villasenor at postgrado.uv.cl>
> escribió:
>
> 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
>>
>

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