Mean Flow Effects on the Low-Wavenumber Pressure Spectrum on a Flexible Surface

[+] Author and Article Information
A. P. Dowling

The University Engineering Department, Cambridge CB2 1PZ, England

J. Fluids Eng 108(1), 104-108 (Mar 01, 1986) (5 pages) doi:10.1115/1.3242527 History: Received August 08, 1984; Online October 26, 2009


The Lighthill theory is extended so that it may be used to determine the flow noise induced by a turbulent boundary layer over a plane homogeneous flexible surface. The influence of the surface properties and the mean flow on the sound generation is brought out explicitly through the use of a Green function. The form of the low-wavenumber wall-pressure spectrum on a rigid surface with an arbitrary mean flow profile is determined. The effect of a coating layer is investigated.

Copyright © 1986 by ASME
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