SAIP2015

Beyond Mixing-Length Theory: an advanced approach to treating convective energy transfer in stars.

30 Jun 2015, 10:20

20m

Oral Presentation Track D1 - Astrophysics Astro

Speaker

Mr Sashin Moonsamy (University of the Witwatersrand)

Level for award<br>&nbsp;(Hons, MSc, <br> &nbsp; PhD, N/A)?

PhD

Apply to be<br> considered for a student <br> &nbsp; award (Yes / No)?

Yes

Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?

Yes

Main supervisor (name and email)<br>and his / her institution

Dr. Fabio Frescura ; Fabio.Frescura@wits.ac.za ; University of the Witwatersrand.

Please indicate whether<br>this abstract may be<br>published online<br>(Yes / No)

Yes

Abstract content <br> &nbsp; (Max 300 words)<br><a href="http://events.saip.org.za/getFile.py/access?resId=0&materialId=0&confId=34" target="_blank">Formatting &<br>Special chars</a>

The heat transfer rates predicted by the Full Spectrum of Turbulence (FST) model of stellar convection differ significantly from those predicted by Mixing Length Theory. The difference is due to the inclusion of the entire range of scales of turbulence rather than the single scale assumption of MLT. Inclusion of these scales leads to a new governing equation for the calculation of the convective heat flux in the stellar interior. We discuss the key ingredients of the FST model and comment on its application to stars.