| 临界雷诺数下旋成体头部/后体和非对称涡流动响应间的确定性 |
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| 引用本文： | 荣臻,邓学蓥,田伟,王延奎.临界雷诺数下旋成体头部/后体和非对称涡流动响应间的确定性[J].航空学报,2007,28(6):1318-1322. |
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| 作者姓名： | 荣臻 邓学蓥 田伟 王延奎 |
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| 作者单位： | 北京航空航天大学,流体力学研究所,北京,100083 |
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| 摘 要： | 在尖拱形细长旋成体的大迎角（α=40°）流动中通过低速风洞测压实验研究了在临界雷诺数下模型头部扰动、后体粗糙度与非对称涡流动响应的确定性问题。实验雷诺数范围在1.0×105～9.0×105。实验结果分析表明，临界雷诺数下模型头部在不设置人工扰动情况下与非对称涡流动响应具有不确定性；而借鉴亚临界头部扰动与流动响应确定性问题的研究方法在模型头部设置人工扰动，结果显示响应存在确定性。关于后体粗糙度对响应的影响，实验结果表明临界雷诺数下该响应存在确定性。
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| 关 键 词： | 大迎角空气动力学 临界雷诺数 确定性 |
| 文章编号： | 1000-6893(2007)06-1318-05 |
| 修稿时间： | 2006年9月27日 |
Determinacy of the Response Between Forebody/Afterbody of Slender Body and Asymmetric Vortex in Transcritical Reynolds Number Flow |
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| Rong Zhen,Deng Xueying,Tian Wei,Wang Yankui.Determinacy of the Response Between Forebody/Afterbody of Slender Body and Asymmetric Vortex in Transcritical Reynolds Number Flow[J].Acta Aeronautica et Astronautica Sinica,2007,28(6):1318-1322. |
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| Authors: | Rong Zhen Deng Xueying Tian Wei Wang Yankui |
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| Institution: | Fluid Mechanics Institute, Beijing University of Aeronautics andAstronautics University |
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| Abstract: | This paper reports results from pressure tests on an ogive slender body in low-speed tunnel at 40°angle of attack, which are used to analyze the responses between perturbation of forebody and roughness of afterbody and asymmetric vortex in transcritical Reynolds number flow. The Reynolds number ranges from 1.0×105 to 9.0×105. The analysis of results reveales that in transcritical Reynolds number flow the response between natural perturbation of nose and asymmetric vortex is undeterminate. |
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| Keywords: | slender body high angle of attack aerodynamics transcritical Reynolds number determination |
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