[mesa-users] CCSN in mesa

[Bill Paxton]

Hi,

There is a new public release of mesa coming soon that will have a completely new method for doing post-explosion evolution of ccsn up to just before shock breakout.  The treatment of shocks now uses an approximate Riemann solver (HLLC method) and avoids artificial viscosity.  There is a treatment of the effects of Rayleigh-Taylor instabilities based on the method of Paul Duffell (2015).   Overall conservation of energy is much improved with cumulative error from explosion to near breakout less that 1% relative to total energy.

That said, the new scheme is still very raw and will probably need some break-in time.   If you want to avoid frustration, don't use it until a 2nd release.  But if you'd like to be a brave pioneer and don't expect lots of help, then you can get an early start when the new release emerges.

Cheers,
Bill



On Feb 16, 2017, at 1:30 PM, Subedi, Shiv Kumar wrote:

> Greetings everyone!
> 
> Currently I'm using MESA version 7624 to simulate the Core-Collapse Supernova (CCSN) and compare it to the results in Paxton. et. al 2015. However,  I wonder how would the newer versions of MESA affect my results? Can anyone provide their helpful suggestions/comments on it?
> 
> Thanks,
> Shiv Subedi
> ------------------------------------------------------------------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, SlashDot.org! http://sdm.link/slashdot_______________________________________________
> mesa-users mailing list
> mesa-users at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/mesa-users

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.mesastar.org/pipermail/mesa-users/attachments/20170216/81db4507/attachment.html>