Analyses of Pressure Oscillations in an Open Cavity
Analyses of Pressure Oscillations in an Open Cavity
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DOI：
10.2514/3.50831
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发表时间：
1980-08
期刊：
影响因子：
2.5
通讯作者：
W. Hankey;J. Shang
中科院分区：
文献类型：
--
作者：
W. Hankey;J. Shang
暴露在高速气流中的飞机空腔，如武器舱，会引起强烈的自感压力振荡。在某些飞行条件下，这些振荡的幅度可能导致结构损坏。大量的实验和分析工作已经调查了这些压力波动，导致一些理解的复杂的相互作用的外部剪切层和空腔声干扰。然而，没有数值计算得到完整的控制流体力学方程。本研究的目的是获得数值解的Navier-Stokes方程的一个开放的空腔，以提供一个新的工具，分析这一现象。'
Open cavities an aircraft exposed to high-speed flow, such as weapon bays, can give rise to intense selfinduced pressure oscillations. The amplitude of these oscillations, under certain flight conditions, can cause structural damage. Substantial experimental and analytical efforts have investigated these pressure fluctuations, resulting in some understanding of the complex interaction of the external shear layer and cavity acoustical disturbances. However, no numerical computations have been obtained for the complete governing fluid mechanical equations. The purpose of this study is to obtain numerical solutions of the Navier-Stokes equations for an open cavity in order to provide a new tool for the analysis of this phenomenon. '