非紧致气动噪声传播的研究进展与分析

A review on the propagation of non-compact aerodynamic sound

非均匀运动介质中非紧致气动噪声的传播是气动声学的一个研究热点与难点。本文围绕理论模型和数值方法,对非紧致气动噪声传播的研究进展进行了综述与分析。首先回顾了声传播理论模型的发展历程,对各模型的优缺点进行了总结分析;然后着重讨论了近20年来采用混合计算气动声学方法研究非紧致气动噪声传播的数值预测方法,包括有限元法、边界元法和精确格林函数法;最后对非紧致气动噪声传播数值方法的发展进行了展望。

The propagation of non-compact aerodynamic noise in an inhomogeneous medium is a hotspot and difficulty problem in aeroacoustics.The theoretical models and numerical methods for the propagation of non-compact aerodynamic noise are reviewed in this paper.The progress of the propagation models is summarized firstly to analyze their advantages and shortages.Furthermore,the numerical approaches for the non-compact noise propagation predicted by the hybrid computational aeroacoustics in the recent two decades are discussed,including the finite element methods,the boundary element methods,and the tailored Green＇s function methods.Finally,the future prospective of the numerical methods for the non-compact aerodynamic noise propagation is presented briefly.