ESDU 02008-2004
矩形平面空腔的空气动力学和空气声学第 I 部分：时间平均流

Aerodynamics and aero-acoustics of rectangular planform cavities Part I: Time-averaged flow

非常抱歉，我们暂时无法提供预览，您可以试试： 免费下载 ESDU 02008-2004 前三页，或者稍后再访问。

您也可以尝试购买此标准，
点击右侧 “购买” 按钮开始采购（由第三方提供）。

注意： 点击下载后，生成下载文件时间比较长，请耐心等待......

标准号

ESDU 02008-2004

发布

2004年

发布单位

ESDU - Engineering Sciences Data Unit

当前最新

ESDU 02008-2004

 

 

适用范围

ESDU 02008 introduces and illustrates the time-averaged flow patterns for rectangular planform cavities mounted in a flat plate with a uniform external flow and a turbulent boundary layer@ with some reference to laminar flow where necessary. The information presented is based on a wide-ranging examination of the very extensive literature available on this subject. The flow and aero-acoustic phenomena are described largely using available wind-tunnel test data@ supported by the results of Computational Fluid Dynamics calculations where possible. The three main flow regimes@ traditionally termed open@ closed and transitional@ and the methods for their determination for subsonic and supersonic speeds@ conventionally based on the flow pattern and the characteristic shape of the mean floor pressure distribution on the cavity centre line@ are discussed. The three-dimensional effects away from the centre line@ especially near the cavity walls and corners are reviewed. Sketches of the complex three-dimensional flow structures are postulated. A summary of areas in which further research would advance the understanding of cavity aerodynamics and aero-acoustics is given. Appendix A contains a discussion of the experimental and CFD evidence for the variations in the centre-line flow pattern for open and transitional flow that occur as length-to-depth ratio is varied. The principal changes involve switches from single to tandem vortices as length is increased and from single to multiple stacked vortices as depth is increased. Appendix B contains a short discussion of recent experimental and theoretical work using information derived from fluctuating pressure data to supplement the traditional use of the characteristic floor pressure distribution shapes to determine the boundaries between flow regimes. ESDU 02008 is one of a group of Data Items intended to act as an introduction to the aerodynamics and aero-acoustics of rectangular planform cavities. The group will consist of five parts: Part I: Time-averaged Flow B Item No. 02008 (this Data Item)@ Part II Unsteady Flow and Aero-acoustics B (Data Item to be issued)@ Part III: Drag and Alleviation of Unsteady Flow Effects B (Data Item to be issued)@ Part IV: Overview of CFD methods ?C ( Data Item to be issued)@ Part V: Bibliography and Tabular Survey B (Data Item to be issued).

ESDU 02008-2004相似标准

推荐