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Turbulent convection and pulsation stability of stars - I. Basic equations for calculations of stellar structure and oscillations
Xiong, D. R.1; Deng, L.2; Zhang, C.2
2015-08-11
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume451Issue:3Pages:3354-3365
AbstractStarting 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.
KeywordConvection Stars: Interiors Stars: Oscillations
DOI10.1093/mnras/stv1170
Indexed BySCI
Language英语
WOS IDWOS:000360833700087
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8905
Collection光学天文研究部
Affiliation1.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
Recommended Citation
GB/T 7714
Xiong, D. R.,Deng, L.,Zhang, C.. Turbulent convection and pulsation stability of stars - I. Basic equations for calculations of stellar structure and oscillations[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2015,451(3):3354-3365.
APA Xiong, D. R.,Deng, L.,&Zhang, C..(2015).Turbulent convection and pulsation stability of stars - I. Basic equations for calculations of stellar structure and oscillations.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,451(3),3354-3365.
MLA Xiong, D. R.,et al."Turbulent convection and pulsation stability of stars - I. Basic equations for calculations of stellar structure and oscillations".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 451.3(2015):3354-3365.
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