[Mesa-users] Brunt-Vaisala frequency is noisy

[Francis Timmes]

> I don't understand why this is happening.

consider plotting the composition, noting the locations where there are 
sharp abundance gradients, and compare those locations to where the BV spikes. 
do the same for thermodynamic variables such as the density and temperature.
what do you surmise?

fxt




> On Dec 5, 2018, at 10:22 AM, Pedro Nuno David Gomes via Mesa-users <mesa-users at lists.mesastar.org> wrote:
> 
> Dear MESA users,
> 
> I'm trying to evolve a 1.5 solar mass star to a point in the red giant branch. For this model, among other quantities, I need the Brunt-Vaisala (which from here on I shall call BV) frequency in the main sequence, subgiant and red giant phases.
> 
> The BV determined by MESA is shown to be extremely noisy, and I don't understand why. I'm sending attached the BV^2 plots for these 3 phases, as well as the inlist I am using. I am using release 10398.
> 
> I don't understand why this is happening, so I would be greatly appreciated if someone could help me solving this problem.
> 
> Thank you very much for your attention,
> 
> Pedro<BV2_MS.png><BV2_redgiant.png><BV2_subgiant.png><inlist_project_1.5M>_______________________________________________
> mesa-users at lists.mesastar.org
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>