[mesa-users] MESA code Questions!!

[Willie Strickland]

It is recommended to use one of the test_suite cases as a starting point.  For example.

	cp -R $MESA_DIR/star/test_suite/solar_calibration ~/documents/mymesa/ags05
	cd ~/documents/mymesa/ags05

Read the info in ~/documents/mymesa/ags05

I normally will run a test case as is, only changing the stopping conditions or other basic control options to make sure that works and I have a basic understanding of what is happening.  Then I begin to make modifications to the inlists, one at a time, and re-run to make sure that works, repeat ….

If the solar_calibration option does not fit, take a look at test_suite/1M_pre_ms_to_wd or other test_suite examples  I have not done the solar_calibration except in testing so it may not be what you are looking for.

I often will use $MESA_DIR/star/work as a starting point.  It is pretty much bare bones.  Then add to it the other choices you want. I used the approx21.net in this example, that may not be best for you, it is just an example of how to use one of the other nets found in  $MESA_DIR/data/net_data/nets.  The solar_calibration test case uses a different adjustment.

After making sure it is working, then make further adjustments to your inlist_project to refine or change your results.

For example.

	cp -R $MESA_DIR/star/work ~/documents/mymesa/ags05
	cd ~/documents/mymesa/ags05

Using your preferred editor make the following changes

change  &controls

     initial_mass = 1 ! in Msun units

add to &star_job

    set_uniform_initial_composition = .true.

    ! uniform initial composition of AGS05 abundances
    set_uniform_initial_composition = .true.
    initial_h1 = 0.7295
    initial_h2 = 0
    initial_he3 = 0
    initial_he4 = 0.25700
    initial_zfracs = 5

    change_net = .true.
    new_net_name = 'approx21.net'

    show_net_species_info = .true.

add to &controls

    max_age = 4.57d9

./mk
./rn


And I get the following results.



	
Willie

> On Jul 8, 2015, at 12:03 PM, Farag, Ebraheem Khaled <farag.11 at lanl.gov> wrote:
> 
> Well I am basically trying to model the sun as well as possible so i can use altered opacity tables to see their affect on the resulting abundances.
> 
> 
> -I asked previously how to achieve a sun like model, and the response i got gave no information at all...
> -In turn i spoke to another student who used the mesa code and he told me to just use the tutorial and modify it with the specific parameters I wanted my "Sun" to fill.

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