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A model for flow-induced noise of Helmholtz resonator-like cavities

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Author: Golliard, J.
Type:article
Date:2003
Institution: Technisch Physische Dienst TNO - TH
Source:Nilson, A.Boden, H., Proceedings of the Tenth International Congress on Sound and Vibration, 7-10 July 2003, Stockholm, Sweden, 1813-1820
Identifier: 237457
Keywords: Acoustic impedance · Acoustics · Boundary layer flow · Hydrodynamics · Mathematical models · Turbulent flow · Acoustic sources · Grazing flow · Resonators

Abstract

This paper presents a single prediction model for the noise generated by a turbulent boundry layer flow grazing on the opening of a Helmholtz-resonator like cavity. The prediction model is validated by comparison with an experimental study. The measured spectra inside the cavity are correctly predicted by the model.