噪声与振动控制

›› 2012, Vol. 32 ›› Issue (4): 6-10.DOI: 10.3969/j.issn.1006-1355.2012.04.002

• 1.综述 • 上一篇    下一篇

气动噪声数值计算方法的比较与应用

徐俊伟,吴亚锋,陈 耿   

  1. （ 西北工业大学 动力与能源学院， 西安 710072 ）
  • 收稿日期:2011-11-21 修回日期:2011-12-28 出版日期:2012-08-18 发布日期:2012-08-18
  • 通讯作者: 徐俊伟

Comparison and Application on the Aero-acoustics Numerical Computing Methods

XU Jun-wei，WU Ya-feng，CHEN Geng   

  1. ( School of Power and Energy, Northwestern Polytechnical University, Xi’an 710072, China )
  • Received:2011-11-21 Revised:2011-12-28 Online:2012-08-18 Published:2012-08-18

摘要： 当前气动噪声问题已日趋普遍和突出。虽然自Lighthill开创气动声学已有半个多世纪，但是由于气动声学方程的复杂性，因此在很长一段时间内都无法实现气动噪声的准确计算。计算流体力学和声学计算方法的成熟，数值计算正在成为解决气动噪声问题的主要工具。从气动声学基本理论出发，对现有的三种气动噪声数值计算方法进行介绍，分析这三种方法的适用性，并通过应用实例说明它们各自的求解过程和优缺点。由此可对气动噪声的预测提供一定的参考依据。

关键词: 声学, 气动噪声, 数值计算, 噪声预测

Abstract: The current aerodynamic noise problems have become more common and prominent. Although Lighthill created a pneumatic acoustics for more than half a century, but because of the complexity of the its equation, so over a long period of time it was unable to realize the accurate calculation of aerodynamic noise. With the maturation of the calculation method for computational fluid dynamics and acoustics, numerical computing is becoming the main tool to solve aerodynamic noise problems. This article, from the basic theory of pneumatic acoustics, the existing three pneumatic noise numerical calculation methods and their applicability were introduced. And through the application examples, their respective advantages and disadvantages and solving process were descibed. This may provide certain reference to the pneumatic noise forecast.

Key words: acoustics, aerodynamic noise, numerical computation, noise prediction

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