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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