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Type: Journal article
Title: Multiple line arrays for the characterization of aeroacoustic sources using a time-reversal method
Author: Mimani, A.
Doolan, C.
Medwell, P.
Citation: Journal of the Acoustical Society of America, 2013; 134(4):327-333
Publisher: Acoustical Soc Amer Amer Inst Physics
Issue Date: 2013
ISSN: 0001-4966
Department: Faculty of Engineering, Computer & Mathematical Sciences
Statement of
A. Mimani, C. J. Doolan, and P. R. Medwell
Abstract: This letter investigates the use of multiple line arrays (LAs) in a Time-Reversal Mirror for localizing and characterizing multipole aeroacoustic sources in a uniform subsonic mean flow using a numerical Time-Reversal (TR) method. Regardless of the original source characteristics, accuracy of predicting the source location can be significantly improved using at least two LAs. Furthermore, it is impossible to determine the source characteristics using a single LA, rather a minimum of two are required to establish either the monopole or dipole source nature, while four LAs (fully surrounding the source) are required for characterizing a lateral quadrupole source.
Keywords: Equipment Design
Sound Spectrography
Time Factors
Computer Simulation
Numerical Analysis, Computer-Assisted
Signal Processing, Computer-Assisted
Rights: © 2013 Acoustical Society of America
DOI: 10.1121/1.4819185
Grant ID:
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