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| 山区地形对大口径高精度射电望远镜台址风场调控影响的数值模拟研究 | |
| Alternative Title | Research on Wind Flow Regulation Influenced by the Mountain Terrain at Large Aperture and High Precision Radio Telescope Site Based on Numerical Simulation |
何飞龙1,5; 许谦1,2,3 ; 王娜1,2,3; 李琳4; 黄释怡6
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| 2023-07-01 | |
| Source Publication | 天文研究与技术
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| ISSN | 1672-7673 |
| Volume | 20Issue:4Pages:296-309 |
| Contribution Rank | 1 |
| Abstract | 优化台址风环境对提高大口径、高精度射电望远镜在中高频段的有效观测时长具有重要意义。通过风障调控风场可有效减小风荷载对望远镜的影响。风障的布局设计除了与风障高度、孔隙率等参量有关外，还要综合考虑台址地形对挡风效率的影响，然而这一方面的研究较少。以奇台射电望远镜(QiTai radio Telescope， QTT)台址为研究对象，开展不同地形对风场调控影响的数值模拟研究，仿真结果表明，无风障时望远镜区的风速大小主要与上下游边界地形的最高海拔有关。布设风障时，若望远镜区域为水平地形，风障遮蔽区降低风速的大小与上游入流风攻角以及下游地形海拔高度有关。台址实际斜坡地形增加了流场的复杂程度，在进行风障风场仿真时，上游边界要尽量延伸到相对较高山体的外围。通过对不同边界地形的仿真结果表明，望远镜区风速折减效率差值最大达到6%。该研究可为望远镜台址风场调控仿真中的地形建模提供一种可靠的参考。 |
| Other Abstract | Optimizing the wind environment at the site is important to improve the effective observation time of large⁃aperture and high⁃precision radio telescopes in the middle and high frequency bands. Through wind barrier regulating wind flow that can effectively reduce the impact of wind load on the telescope, the layout design of wind barriers is not only related to the height, porosity and other parameters of wind barriers, but also consider the impact of the terrain on wind shield. However, there are few researches on this area. Taking the QiTai radio Telescope (QTT) site as the research object, the influence of different terrains on regulating wind flow is carried out based on numerical simulation. The simulation result shows that the wind speed at the telescope location without wind barriers is mainly related to the highest elevation of the upstream and downstream boundary terrain. Under the condition with wind barriers, if the telescope is located in horizontal terrain, the magnitude of reducing wind speed in the shelter area is related to the wind attack angle of the upstream incoming wind and the elevation of the downstream terrain. The actual slope terrain of the site increases the complexity of the wind flow, and when doing wind flow simulation for wind barriers, the upstream boundary should be extended to the outside of the relatively high mountain as far as possible. The simulation result of different boundary terrains show that the difference of reducing wind speed coefficient at telescope position reaches a maximum of 6%. This study can provide a reliable reference for terrain modeling of regulating wind flow simulation. |
| Keyword | 风场调控 射电望远镜台址 风障 地形 数值模拟 |
| DOI | 10.14005/j.cnki.issn1672-7673.20230318.001 |
| URL | 查看原文 |
| Indexed By | CSCD |
| Language | 中文 |
| CSCD ID | CSCD:7513421 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/6626 |
| Collection | 射电天文研究室_天线技术实验室 |
| Corresponding Author | 许谦 |
| Affiliation | 1.中国科学院新疆天文台; 2.中国科学院大学; 3.中国科学院射电天文重点实验室; 4.新疆射电天文重点实验室; 5.新疆大学物理科学与技术学院; 6.西华师范大学物理与天文学院 |
| First Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Corresponding Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | 何飞龙,许谦,王娜,等. 山区地形对大口径高精度射电望远镜台址风场调控影响的数值模拟研究[J]. 天文研究与技术,2023,20(4):296-309. |
| APA | 何飞龙,许谦,王娜,李琳,&黄释怡.(2023).山区地形对大口径高精度射电望远镜台址风场调控影响的数值模拟研究.天文研究与技术,20(4),296-309. |
| MLA | 何飞龙,et al."山区地形对大口径高精度射电望远镜台址风场调控影响的数值模拟研究".天文研究与技术 20.4(2023):296-309. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 何飞龙-2023-山区地形对大口径高精度（7741KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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