[Mesa-users] Fwd: How to extract values

harish sorrout harishsorrout at gmail.com
Fri Jul 22 16:27:40 UTC 2022


Thank you Rob,

 Now I have added the extra profile columns in run_star_extras.f90. By
using mesa 12778, I have accreted the carbon and oxygen on to  CO white
dwarf with accretion rate 2.3d-6. Although white dwarf accreted 1.369 solar
mass and central temperature log 8.69 and then simulation terminate with
following errors:
num_newton_iterations dt_limit        1.1642857143        17        14
                                      log eps nuc ratio         368
764         164    5.0531126467963694D-09   -5.0531126467963694D-09    1.
5160424637814009D+01    1.5160424814208914D+01
  timestep_hold > model_number, so no timestep increase         165
164
                                 WARNING: rel_run_E_err         164
 4.1014717634964032D-02
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num_newton_iterations dt_limit        1.2357142857        18        14
                                      log eps nuc ratio         362
775         165   -1.6962520136639194D-12    1.6962520136639194D-12    8.
3615846268716751D+00    8.3615846268390168D+00
  timestep_hold > model_number, so no timestep increase         166
165
                                 WARNING: rel_run_E_err         165
 4.1014909100627141D-02
 png/trho_000165.png/png
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                                                     dt
 8.4894335288525781D-16
                                     min_timestep_limit
 1.0000000000000001D-15

 stopping because of problems dt < min_timestep_limit

                                 WARNING: rel_run_E_err         166
 4.1014909100627141D-02

terminated evolution: cannot find acceptable model

termination code: min_timestep_limit
DATE: 2022-07-22
TIME: 21:46:20

******************************************************************
failed to create lgT_8.45.mod when running inlist_to_c_ignition_header
******************************************************************

SIr, I know it is difficult to further simulate upto log Tc = 9.5. but I
want to recreate the results of paper "The outcomes of carbon–oxygen white
dwarfs accreting CO-rich material " https://doi.org/10.1093/mnras/sty3176 in
which they achieved that temperature ranges. Also I have checked their
published inlist.
So, I am requesting that you and all mesa users please suggest what
parameters I should use in my inlist and what physics I am missing  to
achieve that temperature range.  Please do me a favour.

Thankyou

with regards
Harish Kumar

On Tue, Jul 19, 2022 at 8:11 PM Rob Farmer <robert.j.farmer37 at gmail.com>
wrote:

> > By doing so, I did not get any errors while compiling. Sir Is there
> anything wrong with the above command.
> Sir I could not understand your words  "You want to pass the string
> "burn_c" not a variable called burn_c".
> Please enlighten me.
>
> Yes your still passing a character called burn_c and not the string
> 'burn_c' (with the quotes)
>
> E_cburn(nz) = star_get_profile_output(s,'burn_c',k)
>
> Rob
>
>
> On Fri, 15 Jul 2022 at 17:38, harish sorrout via Mesa-users <
> mesa-users at lists.mesastar.org> wrote:
>
>>
>> ---------- Forwarded message ---------
>> From: harish sorrout <harishsorrout at gmail.com>
>> Date: Fri, 15 Jul 2022, 21:02
>> Subject: Re: [Mesa-users] How to extract values
>> To: Rob Farmer <robert.j.farmer37 at gmail.com>
>>
>>
>> Sir
>> As you told to use
>>             real(dp) function star_get_profile_output(s,name,k) to get
>> the value of 'burn_c' .  So for this I need to put 'burn_c' at the place of
>> 'name' argument.
>> So i select character (len=maxlen_profile_column_name) :: burn_c.  And use
>>   E_cburn(nz) = star_get_profile_output(s,burn_c,k) where real(dp) ::
>> E_cburn(nz). and
>> then used burn_timescales = (s% cp(k) * s% T) / E_cburn(k)
>>
>> By doing so, I did not get any errors while compiling. Sir Is there
>> anything wrong with the above command.
>> Sir I could not understand your words  "You want to pass the string
>> "burn_c" not a variable called burn_c".
>> Please enlighten me.
>>
>> Harish Kumar
>>
>>
>>
>>
>> _______________________________________________
>> mesa-users at lists.mesastar.org
>> https://lists.mesastar.org/mailman/listinfo/mesa-users
>>
>>
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