Application of SPOD to the analysis of sound field of aeroacoustic sources
Oleg Bychkov, Georgy Faranosov
TL;DR
This paper introduces the use of spectral proper orthogonal decomposition (SPOD) to identify the multipole structure of aeroacoustic noise sources from far-field data, validated through experiments and tests.
Contribution
It presents a novel application of SPOD for aeroacoustic source characterization, enhancing understanding of noise generation mechanisms.
Findings
SPOD successfully identifies multipole structures in simulated data.
Experimental validation confirms SPOD's effectiveness on real flow-induced noise.
Method improves source localization accuracy in aeroacoustic analysis.
Abstract
Spectral proper orthogonal decomposition (SPOD) is proposed for identification of the multipole structure of aeroacoustic noise sources from far-field measurements. The method is verified via tests with point multipoles and validated using experimental data on flow-induced cylinder noise and turbulent jet noise.
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Taxonomy
TopicsUnderwater Acoustics Research · Flow Measurement and Analysis · Aerodynamics and Acoustics in Jet Flows