Influence of span-wise coherence on the acoustic radiation in a cylinder wake | Zendy

Lars Siegel | Zendy; Guosheng He | Zendy; Аrne Henning | Zendy; Karen Mülleners | Zendy

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Influence of span-wise coherence on the acoustic radiation in a cylinder wake

Author(s) -

Lars Siegel,

Guosheng He,

Аrne Henning,

Karen Mülleners

Publication year - 2021

Publication title -

14th international symposium on particle image velocimetry

Language(s) - English

Resource type - Journals

ISSN - 2769-7576

DOI - 10.18409/ispiv.v1i1.127

Subject(s) - wake , anechoic chamber , particle image velocimetry , acoustics , physics , span (engineering) , wind tunnel , coherence (philosophical gambling strategy) , nozzle , aeroacoustics , cylinder , optics , radius , microphone , mechanics , sound pressure , engineering , geometry , structural engineering , mathematics , turbulence , computer science , computer security , quantum mechanics , thermodynamics

The aim of this study is to detect and visualise the influence of span-wise coherence on propagating sound waves emanating from a flow around circular cylinders with span-wise variations of the local radius. Synchronous particle image velocimetry (PIV) and microphone measurements are performed in a circular wind tunnel with a nozzle size of 0.4 m×0.4 m at a maximum flow speed of U∞ = 43m s−1 . The test section is surrounded by a full anechoic chamber of approximately 9 m×9 m×5 m.

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