Experimental study of airfoil-rotor interaction noise by wavelet beamforming
File(s)
Published version
Author(s)
Chen, Wangqiao
Peng, Bo
Liem, Rhea P
Huang, Xun
Type
Journal Article
Abstract
A wavelet-based beamforming method is performed in this investigation to analyze moving acoustic sources in the time-frequency domain, which is of scientific significance and practical importance. The particular problem considered here is the interaction noise from an airfoil and the downstream rotor in the presence of a moving flow, which could find realistic applications in next-generation underwater and aviation systems. A realistic experimental setup is prepared with a rotating blade and the airfoil in an anechoic wind tunnel. The results show that the wavelet-based beamforming method is very suitable for unsteady sound source imaging, which would be able to strengthen the time-frequency analysis capability of acoustic imaging tests and, consequently, possibly leads to deepened physical insights of various transient and moving systems in underwater and aerospace systems.
Date Issued
2020-05
Date Acceptance
2020-04-19
Citation
Journal of the Acoustical Society of America, 2020, 147 (5), pp.3248-3259
ISSN
0001-4966
Publisher
Acoustical Society of America
Start Page
3248
End Page
3259
Journal / Book Title
Journal of the Acoustical Society of America
Volume
147
Issue
5
Copyright Statement
© 2020 Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America.
Identifier
http://dx.doi.org/10.1121/10.0001209
Publication Status
Published
Date Publish Online
2020-05-06