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Low Wavenumber Models for Turbulent Boundary Layer Excitation of Structures Read chapter Read first chapter

2019 | OriginalPaper | Chapter

Determination of the Acoustic and Hydrodynamic Contributions to the Vibrational Response of an Air-Conveying Rectangular Duct

Authors : Florian Hugues, Emmanuel Perrey-Debain, Nicolas Dauchez, Nicolas Papaxanthos

Published in: Flinovia—Flow Induced Noise and Vibration Issues and Aspects-II

Publisher: Springer International Publishing

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Abstract

This paper focuses on the vibratory response of a rectangular duct of finite length excited by an internal turbulent flow. The wall pressure distribution is decomposed into a hydrodynamic and acoustic contribution. Two configurations are investigated: (i) a straight duct with no singularity, in which duct acoustic modes are excited by the TBL and (ii) a straight duct with a diaphragm inserted upstream generating a localized acoustic source. The acoustic contribution is either measured via cross-spectra-based methods or calculated using Computational Fluid Dynamics and aeroacoustic analogies. Semi-analytical predictions are compared with experimental results. It is concluded that in both scenarios, the acoustic contribution is largely dominant.

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previous chapter Panel Vibrations Induced by Supersonic Wall-Bounded Jet Flow from an Upstream High Aspect Ratio Rectangular Nozzle
next chapter Review of Efficient Methods for the Computation of Transmission Loss of Plates with Inhomogeneous Material Properties and Curvature Under Turbulent Boundary Layer Excitation
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Metadata
Title
Determination of the Acoustic and Hydrodynamic Contributions to the Vibrational Response of an Air-Conveying Rectangular Duct
Authors
Florian Hugues
Emmanuel Perrey-Debain
Nicolas Dauchez
Nicolas Papaxanthos
Copyright Year
2019
Book
Flinovia—Flow Induced Noise and Vibration Issues and Aspects-II

Print ISBN: 978-3-319-76779-6

Electronic ISBN: 978-3-319-76780-2

Copyright Year: 2019

DOI
https://doi.org/10.1007/978-3-319-76780-2_14

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