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New prescriptions of turbulent transport from local numerical simulations

Published online by Cambridge University Press:  23 January 2015

V. Prat ,
F. Lignières  and
G. Lesur
V. Prat
Affiliation:
MPA, Karl-Schwarzschild-Str. 1, 85748, Garching b. München, Germany email: [email protected] Université de Toulouse; UPS-OMP; IRAP; Toulouse, France CNRS; IRAP; 14, avenue Édouard Belin, F-31400 Toulouse, France
F. Lignières
Affiliation:
Université de Toulouse; UPS-OMP; IRAP; Toulouse, France CNRS; IRAP; 14, avenue Édouard Belin, F-31400 Toulouse, France
G. Lesur
Affiliation:
Univ. Grenoble Alpes, IPAG, 38000, Grenoble, France CNRS, IPAG, 38000, Grenoble, France
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Abstract

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Massive stars often experience fast rotation, which is known to induce turbulent mixing with a strong impact on the evolution of these stars. Local direct numerical simulations of turbulent transport in stellar radiative zones are a promising way to constrain phenomenological transport models currently used in many stellar evolution codes. We present here the results of such simulations of stably-stratified sheared turbulence taking notably into account the effects of thermal diffusion and chemical stratification. We also discuss the impact of theses results on stellar evolution theory.

Keywords

Hydrodynamicsturbulencestars: evolutionstars: rotation
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Issue S307: New windows on massive stars: asteroseismology, interferometry, and spectropolarimetry , June 2014 , pp. 70 - 75
Copyright
Copyright © International Astronomical Union 2015 

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