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。
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.
出处
《噪声与振动控制》
CSCD
2012年第4期6-10,共5页
Noise and Vibration Control
关键词
声学
气动噪声
数值计算
噪声预测
acoustics
aerodynamic noise
numerical computation
noise prediction
作者简介
徐俊伟（1987-），男，四川西昌人，硕士研究生，目前主要从事噪声数值仿真计算。E-mail：superxjw@163．com
