Re: [mesa-users] Large network test case

[Bill P. <pa...@ki...>]

Hi Mathieu,

The main thing is to add isotopes before they become active in nuclear reactions.
Ideally, everything would run so fast, you'd just dump them all in from the beginning.
But that's still a distant dream for now, so you'll want to creep up on it instead.
Start with a small-ish net and add isos as you move towards advanced burning.

You can just do this by hand (that's what I did for the test cases).
Or you can try using an "adaptive network" based on Alex Heger's scheme.
For that option, take a look at the "adjust_net" test case.

Cheers,
Bill



On Nov 18, 2014, at 12:48 PM, Mathieu wrote:

> Hi everyone,
> 
> I have a question regarding the initial model for all the test cases 
> using the large mesa_*.net network 
> ($MESA_DIR/star/test_suite/*_big_net). How where the initial model 
> computed? Where they computed from ZAMS using the large network, or 
> where they computed until some point with a small network and then the 
> network was changed? And if it was changed, how did this happen?
> 
> I am trying to understand what is the best way to change nuclear 
> network, to avoid running in problems because of the initialization of 
> the abundances of the new isotope introduces (especially if there are a 
> lot of new isotopes.)
> 
> Thanks!
> 
> Mathieu
> 
> 
> 
> 
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