[mesa-users] (no subject)

[Francis Timmes]

this is a symptom of timesteps that are too large.

you could manage the change in abundances by using the dX_nuc* controls
described at http://mesa.sourceforge.net/controls_defaults.html#timestep_controls

fxt




> On Mar 7, 2015, at 5:04 PM, Ondrea Clarkson <ond20id at gmail.com> wrote:
> 
> Hello all, 
> I have a more general question(for the moment). I am running models of massive stars(with a modified net) and am getting errors due to negative abundances. For example, 
> 
>  bad negative xa, hard limit, sig, logT mg24          24        1914   -1.0448153387004978D-04   -1.0000000000000001D-05    0.0000000000000000D+00    8.8157773132297201D+00
> 
> I played around with the net in an attempt to determine if it was a specific reaction causing the error and just get it for another isotope. I have looked around and can not seem to find more details on the error. Could someone please fill me in. Thank you!
> Ondrea
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