空气动力学学报2012，Vol.30Issue(3)：284-290,7.
声学风洞内气动噪声源识别定位方法研究
Researching on aerodynamic noise sources identification technology in anechoic wind tunnel
摘要
Abstract
The flow field and test condition in anechoic wind tunnel impacted acoustic propagation, and impacted noise sources identification. According to classical Beamforming algorithm for staticsource identification, making use of acoustic propagation law in flow field and shear layer of anechoic wind tunnel, this paper develops an aerodynamic noise sources identification method based on microphone arrays in anechoic wind tunnel, then numerical emulation and numerical proof are proceed. Numerical proof results indicate flow field and shear layer of anec'hoic wind tunnel impacted results of noise sources identification obviously, the influence can be corrected by making use of the computation method that introduced in this paper.关键词
麦克风阵列/Beamforming/气动噪声Key words
microphone array/ Beamforming/ aerodynamic noise sources分类
航空航天引用本文复制引用
王勋年,李征初,陈正武,崔红芳,张俊龙..声学风洞内气动噪声源识别定位方法研究[J].空气动力学学报,2012,30(3):284-290,7.基金项目
空气动力学国家重点实验室基金(SKLA2009A0103) （SKLA2009A0103）
