Hydro and Aeroacoustics of Low Mach Number Flows

Hydro and Aeroacoustics of Low Mach Number Flows

Fundamentals, Analysis, and Measurement

2nd Edition - October 1, 2023

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  • Authors: Stewart Glegg, William Devenport
  • Paperback ISBN: 9780443191121

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Hydro and Aeroacoustics of Low Mach Number Flows provides a detailed introduction to sound radiation from subsonic flow over moving surfaces. This phenomenon is the most widespread cause of flow noise in engineering systems, including fan noise, rotor noise, wind turbine noise, boundary layer noise, airframe noise, and aircraft noise. This fully updated and restructured second edition includes additional problems, illustrations, and summary material to support readers, as well as new content addressing Rapid Distortion theory (RDT), boundary layer wall pressure fluctuations, and flow induced sound at surfaces. Themes addressing non-compressible flows have been added, so it now offers full coverage of hydroacoustic as well as aeroacoustic applications. There is also new support materials for this edition including course outlines, problem sets, sample Matlab codes, and experimental data to be found at www.aeroacoustics.net.

Key Features

  • Addresses in detail sound from rotating blades, ducted fans, airframes, boundary layers, and more
  • Presents theory in such a way that it can be used in computational methods and calculating sound levels
  • Includes coverage of different experimental approaches to this subject


Graduate students and researchers with an interest in hydroacoustics or aeroacoustics

Table of Contents

  • 1. Introduction
    2. The equations of fluid motion
    3. Linear acoustics
    4. Lighthill's acoustic analogy
    5. The sources of flow induced noise
    6. Ffowcs Williams and Hawkings equation
    7. Amiet’s approach– the Surface Source for Thin Airfoils
    8. Goldstein’s approach – flows with distortion
    9. Howe’s and Powell’s approach - vortex sound
    10. Turbulence and stochastic processes
    11. Turbulent flows
    12. Wall Pressure in Turbulent Boundary Layers
    13. Turbulent leading-edge and trailing-edge noise
    14. Open rotor noise
    15. Duct acoustics
    16. Fan noise
    17. Aeroacoustic testing and instrumentation
    18. Measurement, signal processing, and uncertainty
    19. Phased arrays
    20. The theory of edge scattering

Product details

  • No. of pages: 595
  • Language: English
  • Copyright: © Academic Press 2023
  • Published: October 1, 2023
  • Imprint: Academic Press
  • Paperback ISBN: 9780443191121

About the Authors

Stewart Glegg

Stewart Glegg is currently the Director of the Center for Acoustics and Vibration at FAU. He was an Associate Editor for the AIAA Journal (1994-97) and serves on the editorial board of the Journal of Sound and Vibration and the Journal of Aeroacoustics. In May 2004 he was awarded the American Institute for Aeronautics and Astronautics Aeroacoustics Award for "Outstanding contributions to the understanding and reduction of fan noise in turbo machinery". He has published over 140 technical papers in leading scientific and engineering journals.

Affiliations and Expertise

Director, Center for Acoustics and Vibration, Florida Atlantic University, FL, USA

William Devenport

William Devenport joined the faculty at the Department of Aerospace and Ocean Engineering at Virginia Tech in 1989 and has built an extensive research program centered on experimental studies of aerodynamics and aeroacoustics. He is Director of the Virginia Tech Stability Wind Tunnel and Director of the Center for Renewable Energy and Aerodynamic Testing (CREATe). He has published over 170 technical articles and is recognized for his contributions to the understanding of vortex dominated flows, roughness noise, leading edge noise and noise from inhomogeneous turbulence as well as contributions to aeroacoustic facility design and instrumentation.

Affiliations and Expertise

Director, Virginia Tech Stability Wind Tunnel and Director, Center for Renewable Energy and Aerodynamic Testing (CREATe), VA, USA

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