Applications of the k-omega Model in Stellar Evolutionary Models

	Applications of the k-omega Model in Stellar Evolutionary Models
	Li Y(李焱)1,2,3,4
刊名	ASTROPHYSICAL JOURNAL
	2017-05-20
卷号	841 期号:1
关键词	convection stars: evolution stars: interiors Sun: interior turbulence
ISSN号	0004-637X
通讯作者	Li, Yan(Chinese Acad Sci, Yunnan Observ, Kunming 650216, Peoples R China)
产权排序	第1完成单位
英文摘要	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.
学科主题	天文学
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	SOLAR CONVECTION ZONE ; TURBULENT CONVECTION ; MASSIVE STARS ; OVERSHOOTING REGION ; THERMAL-CONVECTION ; ELEMENT DIFFUSION ; HELIOSEISMOLOGY ; OPACITIES ; INTERIOR ; ENVELOPE
收录类别	SCI
原文出处	http://stacks.iop.org/0004-637X/841/i=1/a=10?key=crossref.c812a5edba8af40f5a9acad7449ce809
语种	英语
WOS记录号	WOS:000401582200010
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/10070]
专题	云南天文台_恒星物理研究组云南天文台_中国科学院天体结构与演化重点实验室
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
推荐引用方式 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).