腔体气动噪声的研究现状及发展趋势

空腔流动在运输、航天等行业中广泛存在。当高速流体通过空腔时,在腔内产生自激振荡,流场和声场相互耦合产生的气动噪声会引起结构的振动和疲劳破坏,甚至影响结构的使用寿命,因此如何控制和降低腔体气动噪声已成为国内外学者研究的焦点问题。本文在阅读大量文献的基础上,概述了当前腔体气动噪声的研究现状,分析和归纳腔体气动噪声的预测理论、实验研究,数值模拟方法以及噪声控制技术,展望腔体气动噪声研究的未来发展趋势。

Research Status and Development Trend of Cavity Aerodynamic Noise

Cavity flow exists widely in transportation, aerospace and other industries, while the high speed fluid through the cavity, self-excited oscillation in the cavity, the flow field and sound field coupling of the aerodynamic noise will cause vibration and fatigue damage of the structure, and even affect the life of the structure, so as to control and reduce the cavity aerodynamic noise has become the focus of the problem of the scholars at home and abroad. Based on reading a lot of literature, an overview of the current research status of cavity aerodynamic noise, prediction theory, experimental analysis and induction cavity aerodynamic noise, numerical simulation method and noise control technology, the future development trend of gas cavity noise.