空气动力学学报2026，Vol.44Issue(3)：1-10,10.DOI:10.7638/kqdlxxb-2024.0201
面向磁浮飞行风洞的运动声源定位和评估方法
Identification and qualification method of moving noise sources for the maglev flight tunnel
摘要
Abstract
The maglev flying wind tunnel is a novel conceptual aerodynamic testing facility operating on the"object-moving and wind-static"principle,which poses new challenges for the localization and evaluation of moving sound sources in acoustic testing.In response,this paper proposes a fast time-domain beamforming(FTBF)algorithm suitable for moving sound source localization and evaluation based on its operational characteristics.Simulation studies on the localization and evaluation of typical moving sound sources,along with research on parameter influence,were conducted and experimentally validated.The results indicate that:(1)The FTBF algorithm improves computational speed by approximately 45 times compared to the conventional time-domain beamforming(CTBF)algorithm;(2)Regarding the issue that"except for simple harmonic sound sources of the same frequency,simple harmonic sound sources of different frequencies and white noise sound sources are affected by low-frequency sound sources(or components),resulting in low resolution in time-domain sound source localization,"transforming the reconstructed time-domain sound pressure into the frequency domain and analyzing it by frequency band can significantly enhance the accuracy of sound source localization and evaluation;(3)As the moving speed of the sound source increases,the resolution of sound source imaging decreases at positions opposite to the direction of sound source motion and deviating from the center of the array;(4)Experimental results show that the self-noise of the moving platform interferes with the noise measurement of the test object,and this interference intensifies with increasing speed,even overwhelming the target signal.This study provides an efficient and accurate analytical method for acoustic measurements in moving test environments such as maglev wind tunnels,contributing positively to improving the reliability and engineering application value of complex aeroacoustic testing.关键词
磁浮飞行风洞/运动声源/声源定位/声源重构/时域波束形成Key words
maglev flight wind tunnel/moving noise source/sound source identification/sound source reconstruction/time-domain beamforming分类
航空航天引用本文复制引用
张军,马赛,倪章松,王茂,王瑞东..面向磁浮飞行风洞的运动声源定位和评估方法[J].空气动力学学报,2026,44(3):1-10,10.基金项目
智强基金项目 （）
