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Theoretical Prediction for the Reduction of Flow-Induced Noise on a Plane Surface

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Aero- and Hydro-Acoustics

Part of the book series: IUTAM Symposia ((IUTAM))

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Summary

A study was made of a theoretical model for evaluating the reduction of the noise induced by turbulent flow over a plane surface. The flow-induced noise received by a rectangular hydrophone embedded in a layer of elastomer was calculated to evaluate the noise reduction relative to the turbulent boundary layer noise on a hard surface. The formulation of the problem is based on the Corcos model representing a turbulent wall pressure spectrum, a transfer function representing a wavevector filter, and the rectangular hydrophone function. The major results presented in this paper are noise reduction contour plots for 200 Hz and 1,000 Hz.

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References

  1. Corcos, G.M.; The structure of the turbulent pressure field in boundary-layer flows. J. Fluid Mech., 18 (1964).

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  2. Chase, D.M., and stern, R; Turbulent-boundary-layer pressure transmitted into an elastomer layer. BBN Technical Memorandum No. 382 (1977).

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  3. Ko, S.; Turbulent boundary layer noise reduction by means of an elastomer layer. NUSC Technical Memorandum No. 821094 (1982).

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  4. Chase, D.M.; Modeling the wavevector-frequency spectrum of turbulent boundary layer wall pressure. J. Sound Vib., 70(1) (1980).

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  5. Ffowcs Williams, J.E.; Boundary-layer pressures and the Corcos model: a development to incorporate low-wavenumber constraints. J. Fluid Mech., 125 (1982).

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Author information

Authors and Affiliations

  1. Department of the Navy, Naval Underwater Systems Center, New London, Connecticut, 06320, USA

    Sung H. Ko

Authors
  1. Sung H. Ko
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Editor information

Editors and Affiliations

  1. Département Acoustique, Ecole Centrale de Lyon, 36, av. Guy de Collongue, BP 163, 69131, Ecully Cedex, France

    Geneviève Comte-Bellot

  2. Dept. of Engineering, University of Cambridge, Trumpington Street, CB2-1PZ, GB Cambridge, England

    John E. Ffowcs Williams

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© 1986 Springer, Berlin Heidelberg

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Ko, S.H. (1986). Theoretical Prediction for the Reduction of Flow-Induced Noise on a Plane Surface. In: Comte-Bellot, G., Williams, J.E.F. (eds) Aero- and Hydro-Acoustics. IUTAM Symposia. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-82758-7_31

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  • DOI: https://doi.org/10.1007/978-3-642-82758-7_31

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-82760-0

  • Online ISBN: 978-3-642-82758-7

  • eBook Packages: Springer Book Archive

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