| 风洞流场扰动和转捩区流场的相关性分析 |
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| 引用本文： | 郑国锋.风洞流场扰动和转捩区流场的相关性分析[J].空气动力学学报,1993,11(3):283-289. |
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| 作者姓名： | 郑国锋 |
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| 作者单位： | 南京航空航天大学 江苏南京 |
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| 摘 要： | 本文通过实验研究了风洞实验区流场的扰动与边界层转捩区内的速度脉动及其强度、谱特性和两者之间的相关性,提出了实验区流场的扰动对转捩区流场起作用的条件和规律(即转捩对外界扰动响应的条件),这项工作是研究修正风洞背景流场噪声和湍流度对转捩雷诺数影响的基础。
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| 关 键 词： | 边界层 转捩 噪声 湍流度 相关技术 |
Correlativity Analysis of Flow Disturbances in Wind Tunnel and Flow in Transition Zone |
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| Zheng Guofeng.Correlativity Analysis of Flow Disturbances in Wind Tunnel and Flow in Transition Zone[J].Acta Aerodynamica Sinica,1993,11(3):283-289. |
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| Authors: | Zheng Guofeng |
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| Institution: | Nanjing University of Aeronautics and Astronautics |
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| Abstract: | An experimental study of the disturbances in a tunnel flow and the velocity fluctuation in a transitional zone of boundary layer has been conducted. The intensity, frequency spectral characteristics and correlativity between them are measured. The requirement and law of those disturbances change transitional flow are suggested, that is a requirement of that the transition responds to environmental disturbances. This work is of a foundation to research into correcting the influence of noise and turbulence in a tunnel flow on the transition Reynolds number. |
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| Keywords: | boundary layer transition noise effect turbulence correlation techniques |
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