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On the nature of the core-envelope boundary layer in a slowly rotating star

 

作者: Jean-Louis Tassoul,   Monique Tassoul,  

 

期刊: Geophysical & Astrophysical Fluid Dynamics  (Taylor Available online 1986)
卷期: Volume 36, issue 3-4  

页码: 303-315

 

ISSN:0309-1929

 

年代: 1986

 

DOI:10.1080/03091928608210088

 

出版商: Taylor & Francis Group

 

关键词: Stellar rotation;meridional circulation;early-type stars

 

数据来源: Taylor

 

摘要:

In this paper we discuss the large-scale meridional currents and differential rotation in the radiative envelope of a single, nonmagnetic, early-type star. Our solutions depend on the interaction between these large-scale motions and the small-scale baroclinic eddies, which are an ever-present feature of a stellar radiative zone. If one makes allowance for meansteadymotions in a typical rotating star, then large eddy viscosities are necessary for the method to converge. We show that there exists a singular, thermo-viscous boundary layer at the interface between the convective core and the radiative envelope. Unless very unrealistic assumptions are made, this layer isnotof the Ekman type.

 

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