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Advances in Universal Scaling for Broadband Turbulent Noise in Internal Flow Devices

[+] Author Affiliations
Daniele Violato, Arjen de Jong, Joachim Golliard

TNO, Delft, the Netherlands

Paper No. PVP2014-28299, pp. V004T04A030; 10 pages
doi:10.1115/PVP2014-28299
From:
  • ASME 2014 Pressure Vessels and Piping Conference
  • Volume 4: Fluid-Structure Interaction
  • Anaheim, California, USA, July 20–24, 2014
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 978-0-7918-4601-8
  • Copyright © 2014 by ASME

abstract

This paper focuses on the scalability of broadband turbulent noise in internal pipe flows. It discusses a universal scaling approach for broadband turbulent noise that is based on surface acoustic power modeled by ANSYS Fluent. This investigation proposes a strategy for amplitude scaling at frequencies above the onset frequency for non-planar acoustic waves, offering a generalized formulation for circular and rectangular pipes. Information based on the surface acoustic power, wall shear stress, kinetic energy and dynamic pressure is explored in view of improving the frequency scaling approach. For short, long and mitred bends, the reversed method is applied to reconstruct the broadband noise spectra, which compare well with the experimental ones. Finally, the noise spectra reconstruction is performed for T-joint and tees geometries.

Copyright © 2014 by ASME

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