Efficient turbulent compressible convection in the deep stellar atmosphere
文献类型：期刊论文
| 作者 | Tian, Chun-Lin1,2; Deng, Li-Cai1 ; Chan, Kwing-Lam3; Xiong, Da-Run4; LiCai Deng
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| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
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| 出版日期 | 2009 |
| 卷号 | 9期号:1页码:102-114 |
| 关键词 | convection hydrodynamic turbulence method: numerical stars: atmosphere |
| 英文摘要 | We report on an application of gas-kinetic BGK scheme to the computation of turbulent compressible convection in the stellar interior. After incorporating the Sub-grid Scale (SGS) turbulence model into the BGK scheme, we tested the effects of numerical parameters on the quantitative relationships among the thermodynamic variables, their fluctuations and correlations in a very deep, initially gravity-stratified stellar atmosphere. Comparison indicates that the thermal properties and dynamic properties are dominated by different aspects of numerical models separately. An adjustable Deardorff constant in the SGS model c(mu) = 0.25 and an amplitude of artificial viscosity in the gas-kinetic BGK scheme C(2) = 0 are appropriate for the current study. We also calculated the density-weighted auto- and cross-correlation functions in Xiong's turbulent stellar convection theory based on which the gradient type of models of the non-local transport and the anisotropy of the turbulence were preliminarily studied. No universal relations or constant parameters were found for these models. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000264770600009 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/7576]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Hong Kong Univ Sci & Technol, Dept Math, Hong Kong, Hong Kong, Peoples R China 4.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tian, Chun-Lin,Deng, Li-Cai,Chan, Kwing-Lam,et al. Efficient turbulent compressible convection in the deep stellar atmosphere[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2009,9(1):102-114. |
| APA | Tian, Chun-Lin,Deng, Li-Cai,Chan, Kwing-Lam,Xiong, Da-Run,&LiCai Deng.(2009).Efficient turbulent compressible convection in the deep stellar atmosphere.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,9(1),102-114. |
| MLA | Tian, Chun-Lin,et al."Efficient turbulent compressible convection in the deep stellar atmosphere".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 9.1(2009):102-114. |
入库方式： OAI收割
来源：国家天文台
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