Preliminary numerical simulation of mirror seeing for the Chinese Future Giant Telescope
文献类型：期刊论文
| 作者 | Zhang, En-Peng1,2 ; Cui, Xiang-Qun3; Li, Guo-Ping3; Zhang, Yong3; Shi, Jian-Rong1,2; Zhao, Yong-Heng1,2; Shi Jianrong; Zhao Yongheng; Zhang Enpeng
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| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
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| 出版日期 | 2016-06-01 |
| 卷号 | 16期号:6 |
| 关键词 | astronomical instrumentation methods: numerical telescopes |
| 英文摘要 | Mirror seeing will be one of the key factors influencing image quality of an extremely large ground-based optical telescope (ELT). Computational fluid dynamics (CFD) can be used to estimate the mirror seeing and the effects of ventilation. In this paper, we present a simplified approach to simulation of mirror seeing for the Chinese Future Giant Telescope (CFGT, 30m in diameter) with the CFD software ANSYS Icepak. We get the FWHM of the image and the distribution of refractive index structure function (C-N(2)) above the mirror. We demonstrate that thermal control and ventilation are effective ways to improve the image quality. Our simulation results agree with those of other authors for the ELT. To reduce the mirror seeing to a level of 0.5 '', the suggested temperature excess of the primary mirror above the ambient air for thermal control of the CFGT is 0 - 2 K according to the present results of weakly forced convection. The limitations of the method are also discussed. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000377524600013 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5336]  |
| 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, Key Lab Opt Astron, Beijing 100012, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, Nanjing Inst Astron Opt & Technol, Nanjing 210042, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, En-Peng,Cui, Xiang-Qun,Li, Guo-Ping,et al. Preliminary numerical simulation of mirror seeing for the Chinese Future Giant Telescope[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2016,16(6). |
| APA | Zhang, En-Peng.,Cui, Xiang-Qun.,Li, Guo-Ping.,Zhang, Yong.,Shi, Jian-Rong.,...&Zhang Enpeng.(2016).Preliminary numerical simulation of mirror seeing for the Chinese Future Giant Telescope.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,16(6). |
| MLA | Zhang, En-Peng,et al."Preliminary numerical simulation of mirror seeing for the Chinese Future Giant Telescope".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 16.6(2016). |
入库方式： OAI收割
来源：国家天文台
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