[mesa-users] unsmoothed element abundance for MESA version of 6208

[Pablo Marchant]

Tao Wu, what do you mean by "unsmoothed phenomenon"? smooth_convective_bdy
is meant to smooth newly non-convective regions, so is that what is
failing, and you are seeing a composition profile with several steps?

Some plots would be helpful, and also a description of what you would
consider a correct result.

Cheers!
El 26/06/2014 11:15, "WU T." <ggwutao at 126.com> escribió:

> Hi everyone,
>
> I used the version of 6208 to calculated the stellar evolution with 1Msun
> masses and 0.02 metallicity and encountered a problem that the abundance of
> hydrogen varying with masses shows an unsmoothed phenomenon. This unformal
> phenomenon is durning main sequence stars to red giant branch stars (the
> position of red bump). After the position of red bump, the unformal
> phenomenon disappear. I don know what does lead to this phenomenon and how
> to solve this problem? Who did encounter this problem and can give some
> advice for it?
>
> I adopted the module of 1M_pre_ms_to_wd and the inlist file as follows:
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>
> &star_job
>
>       show_log_description_at_start = .false.
>
>       !show_net_species_info = .true.
>       !show_net_reactions_info = .true.
>
>       !create_pre_main_sequence_model = .true.
>
>       save_model_when_terminate = .true.
>       save_model_filename = 'final.mod'
>
>       write_profile_when_terminate = .true.
>       filename_for_profile_when_terminate = 'final_profile.data'
>
>       kappa_file_prefix = 'gs98'
>
>       change_lnPgas_flag = .true.
>       new_lnPgas_flag = .true.
>
>       change_initial_net = .true.
>       new_net_name = 'o18_and_ne22.net'
>
>       pre_ms_relax_num_steps = 50
>
>       new_surface_rotation_v = 2 ! solar (km sec^1)
>       set_near_zams_surface_rotation_v_steps = 10 ! to turn on rotation
> when near zams
>
>       !pgstar_flag = .true.
>
>
> / ! end of star_job namelist
>
> &controls
>
>       max_model_number = 20000
>
>       initial_mass = 1.0
>       initial_z = 0.02d0
>
>       max_num_profile_models = 200
>       photostep = 10
>       profile_interval = 10
>       history_interval = 1
>       terminal_cnt = 10
>       write_header_frequency = 10
>
>       log_L_lower_limit = -1
>
>       smooth_convective_bdy = .true.
>       convective_bdy_weight = 1
>
>       RGB_wind_scheme = 'Reimers'
>       AGB_wind_scheme = 'Blocker'
>       RGB_to_AGB_wind_switch = 1d-4
>       Reimers_wind_eta = 0.0!0.7d0
>       Blocker_wind_eta = 0.0!0.7d0
>
> / ! end of controls namelist
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>
> Best wiehes!
>
> Tao Wu
>
>
>
>
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