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Applications of the k-omega Model in Stellar Evolutionary Models
Li Y(李焱)1,2,3,4; Li, Yan(Chinese Acad Sci, Yunnan Observ, Kunming 650216, Peoples R China)
发表期刊ASTROPHYSICAL JOURNAL
2017-05-20
卷号841期号:1
DOI10.3847/1538-4357/aa6d4e
产权排序第1完成单位
收录类别SCI
关键词Convection Stars: Evolution Stars: Interiors Sun: Interior Turbulence
摘要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.
项目资助者NSFC of China(11333006, 11521303) ; foundation of Chinese Academy of Sciences(XDB09010202)
语种英语
学科领域天文学
文章类型Article
ISSN0004-637X
URL查看原文
WOS记录号WOS:000401582200010
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]SOLAR CONVECTION ZONE ; TURBULENT CONVECTION ; MASSIVE STARS ; OVERSHOOTING REGION ; THERMAL-CONVECTION ; ELEMENT DIFFUSION ; HELIOSEISMOLOGY ; OPACITIES ; INTERIOR ; ENVELOPE
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被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/10070
专题恒星物理研究组
中国科学院天体结构与演化重点实验室
通讯作者Li, Yan(Chinese Acad Sci, Yunnan Observ, Kunming 650216, Peoples R China)
作者单位1.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
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Li Y,Li, Yan. Applications of the k-omega Model in Stellar Evolutionary Models[J]. ASTROPHYSICAL JOURNAL,2017,841(1).
APA Li Y,&Li, Yan.(2017).Applications of the k-omega Model in Stellar Evolutionary Models.ASTROPHYSICAL JOURNAL,841(1).
MLA Li Y,et al."Applications of the k-omega Model in Stellar Evolutionary Models".ASTROPHYSICAL JOURNAL 841.1(2017).
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