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题名: Turbulent convection and pulsation stability of stars - I. Basic equations for calculations of stellar structure and oscillations
作者: Xiong, D. R.1; Deng, L.2; Zhang, C.2
刊名: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期: 2015-08-11
卷号: 451, 期号:3, 页码:3354-3365
关键词: convection ; stars: interiors ; stars: oscillations
学科分类: 天文和天体物理
DOI: 10.1093/mnras/stv1170
文章类型: Article
英文摘要: Starting from hydrodynamic equations, we have established a set of hydrodynamic equations for average flow and a set of dynamic equations of auto- and cross-correlations of turbulent velocity and temperature fluctuations, following the classic Reynold's treatment of turbulence. The combination of the two sets of equations leads to a complete and self-consistent mathematical expressions ready for the calculations of stellar structure and oscillations. In this paper, non-locality and anisotropy of turbulent convection are concisely presented, together with defining and calibrating of the three convection parameters (c(1), c(2) and c(3)) included in the algorithm. With the non-local theory of convection, the structure of the convective envelope and the major characteristics of non-adiabatic linear oscillations are demonstrated by numerical solutions. Great effort has been exercised to the choice of convection parameters and pulsation instabilities of the models, the results of which show that within large ranges of all three parameters (c(1), c(2) and c(3)) the main properties of pulsation stability keep unchanged.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: TIME-DEPENDENT CONVECTION ; MIXING-LENGTH THEORY ; OVERSHOOTING ZONE ; SOLAR PHOTOSPHERE ; VARIABLE-STARS ; LI ABUNDANCE ; RR LYRAE ; MODELS ; VELOCITY ; LITHIUM
收录类别: SCI
所属项目名称: PMO_LIB-IR
语种: 英语
WOS记录号: WOS:000360833700087
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/14927
Appears in Collections:熊大闰_期刊论文

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作者单位: 1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
2.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China
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