Anisotropy and dissipation of turbulence and their effects on solar models
文献类型：期刊论文
| 作者 | Li Y(李焱) ; Yang JY(杨家艳)
|
| 刊名 | CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2001-02 |
| 卷号 | 1期号:1页码:66-76 |
| 关键词 | Sun : interior turbulent convection Sun : oscillations |
| ISSN号 | 1009-9271 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Li, Y (reprint author), Yunnan Astron Observ, POB 110, Kunming 650011, Peoples R China. |
| 英文摘要 | Based on a dynamic model for turbulent convection, we investigate the effects of dissipation and anisotropy of the turbulence on the convective energy transport. We introduce two time scales to describe the dissipation of the turbulence, and approximate the anisotropy of the turbulence by Rotta's proposal of "return to isotropy". The improved turbulence model results in an equation to determine the temperature gradient in the convection zone, which is of similar form as that of the MIT. We apply the improved MIT to solar models, and find that the increases of the anisotropy and decreases of the dissipation of the turbulence reduce the value of the convection parameter a, because these processes enhance the convective energy transfer rate. Compared with the observed solar p-mode frequencies, it is plausible that the dissipation of the turbulence in the solar convection zone should be fairly strong, while the degree of anisotropy of the turbulence plays a less significant role on the structure of the solar convection zone. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 分类号 | P182 |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | REYNOLDS STRESS APPROACH ; CONVECTION ; STARS ; OSCILLATIONS ; OPACITIES ; SHEAR |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/1009-9271/1/1/66/ |
| 语种 | 英语 |
| WOS记录号 | WOS:000172248600009 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5154]  |
| 专题 | 云南天文台_恒星物理研究组 |
| 作者单位 | Yunnan Astronomical Observatory and NAOCAS, P.O. Box 110, Kunming 650011 |
| 推荐引用方式 GB/T 7714 | Li Y,Yang JY. Anisotropy and dissipation of turbulence and their effects on solar models[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2001,1(1):66-76. |
| APA | Li Y,&Yang JY.(2001).Anisotropy and dissipation of turbulence and their effects on solar models.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,1(1),66-76. |
| MLA | Li Y,et al."Anisotropy and dissipation of turbulence and their effects on solar models".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 1.1(2001):66-76. |
入库方式： OAI收割
来源：云南天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。