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Applications of the k-omega Model in Stellar Evolutionary Models
Li Y(李焱)1,2,3,4
Source PublicationASTROPHYSICAL JOURNAL
2017-05-20
Volume841Issue:1
DOI10.3847/1538-4357/aa6d4e
Contribution Rank第1完成单位
Indexed BySCI
KeywordConvection Stars: Evolution Stars: Interiors Sun: Interior Turbulence
Abstract

The k-omega model for turbulence was first proposed by Kolmogorov. A new k-omega model for stellar convection was developed by Li, which could reasonably describe turbulent convection not only in the convectively unstable zone, but also in the overshooting regions. We revised the k-omega model by improving several model assumptions (including the macro-length of turbulence, convective heat flux, and turbulent mixing diffusivity, etc.), making it applicable not only for convective envelopes, but also for convective cores. Eight parameters are introduced in the revised k-omega model. It should be noted that the Reynolds stress (turbulent pressure) is neglected in the equation of hydrostatic support. We applied it into solar models and 5 M-circle dot stellar models to calibrate the eight model parameters, as well as to investigate the effects of the convective overshooting on the Sun and intermediate mass stellar models.

Funding ProjectNSFC of China[11333006] ; NSFC of China[11521303] ; foundation of Chinese Academy of Sciences[XDB09010202]
Funding OrganizationNSFC of China[11333006, 11521303] ; foundation of Chinese Academy of Sciences[XDB09010202]
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000401582200010
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordSolar Convection Zone ; Turbulent Convection ; Massive Stars ; Overshooting Region ; Thermal-convection ; Element Diffusion ; Helioseismology ; Opacities ; Interior ; Envelope
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/10070
Collection恒星物理研究组
中国科学院天体结构与演化重点实验室
Corresponding AuthorLi Y(李焱)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China
2.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China
3.University of Chinese Academy of Sciences, Beijing 100049, China
4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Li Y. Applications of the k-omega Model in Stellar Evolutionary Models[J]. ASTROPHYSICAL JOURNAL,2017,841(1).
APA Li Y.(2017).Applications of the k-omega Model in Stellar Evolutionary Models.ASTROPHYSICAL JOURNAL,841(1).
MLA Li Y."Applications of the k-omega Model in Stellar Evolutionary Models".ASTROPHYSICAL JOURNAL 841.1(2017).
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