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Elsevier

Aeroacoustics of Low Mach Number Flows

Fundamentals, Analysis and Measurement

  • 2nd Edition - September 26, 2023
  • Latest edition
  • Authors: Stewart Glegg, William Devenport
  • Language: English

Aeroacoustics of Low Mach Number Flows: Fundamentals, Analysis and Measurement, Second Edition provides a detailed introduction to sound radiation from subsonic flow over moving… Read more

Description

Aeroacoustics of Low Mach Number Flows: Fundamentals, Analysis and Measurement, Second Edition 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 new edition includes additional problems, illustrations and summary materials to support readers. New content covers Rapid Distortion theory (RDT), boundary layer wall pressure fluctuations, and flow induced sound at surfaces. Themes addressing non-compressible flows have also been added, offering coverage of hydroacoustic as well as aeroacoustic applications.

New support materials for this edition include 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

Readership

Graduate students and researchers with an interest in hydroacoustics or aeroacoustics

Table of contents

Part 1: Fundamentals

1. Introduction
Stewart Glegg and William Devenport

2. The equations of fluid motion
Stewart Glegg and William Devenport

3. Linear acoustics
Stewart Glegg and William Devenport

Part 2: Fundamentals of Aeroacoustics

4. Lighthill's acoustic analogy
Stewart Glegg and William Devenport

5. The Ffowcs Williams and Hawkings Equation
Stewart Glegg and William Devenport

6. Propeller and Open Rotor Noise
Stewart Glegg and William Devenport

Part 3: Unsteady Blade Loading

7. Amiet’s approach – the Surface Source for Thin Airfoils
Stewart Glegg and William Devenport

8. Goldstein’s approach – flows with distortion
Stewart Glegg and William Devenport

9. Howe’s and Powell’s approach - vortex sound
Stewart Glegg and William Devenport

Part 4: Turbulent Flows

10. Stochastic processes
Stewart Glegg and William Devenport

11. Turbulence and Turbulent Flows
Stewart Glegg and William Devenport

12. Wall Pressure Fluctuations in Turbulent Boundary Layers
Stewart Glegg and William Devenport

Part 5: Broadband Flow Noise from Surface Interactions and Fans

13. Broadband Noise from Open Rotors and Leading-edge Noise
Stewart Glegg and William Devenport

14. Trailing Edge and Roughness Noise
Stewart Glegg and William Devenport

15. Duct Acoustics
Stewart Glegg and William Devenport

16. Fan Noise
Stewart Glegg and William Devenport

Part 6: Experimental Methods

17. Aeroacoustic Testing and Instrumentation
Stewart Glegg and William Devenport

18. Measurement, Signal Processing and Uncertainty
Stewart Glegg and William Devenport

19. Phased Arrays
Stewart Glegg and William Devenport

Part 7 Advanced Mathematical Methods

20. The Theory of Edge Scattering
Stewart Glegg and William Devenport

Appendix A:Nomenclature
Stewart Glegg and William Devenport
Appendix B: Branch Cuts
Stewart Glegg and William Devenport
Appendix C: The Cascade Blade Response Function
Stewart Glegg and William Devenport
Appendix D: RDT and the Distortion Tensor
Stewart Glegg and William Devenport

Product details

  • Edition: 2
  • Latest edition
  • Published: September 27, 2023
  • Language: English

About the authors

SG

Stewart Glegg

Stewart Glegg was a professor at Florida Atlantic University until he retired in May 2023 and is now an Affiliate faculty member of CREATe at Virginia Tech. He was an Associate Editor for the AIAA Journal (1994-97) and has served 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 200 technical papers in leading scientific and engineering journals.
Affiliations and expertise
Affiliate faculty member of CREATe at Virginia Tech, Blacksburg, VA

WD

William Devenport

William Devenport is Crofton Professor of Engineering at the Department of Aerospace and Ocean Engineering at Virginia Tech and leads a research program centred on experimental studies of aerodynamics and aeroacoustics. He is Director of the Virginia Tech Stability Wind Tunnel and Director of the Center for Research and Engineering in Aero/hydrodynamic Technology (CREATe). He has published over 200 technical articles and in May 2019 received the AIAA Aeroacoustics Award for “Seminal and pioneering contributions in aeroacoustics particularly in developing new experimental techniques and in the understanding of turbulence and surface roughness noise”.
Affiliations and expertise
Crofton Professor of Engineering, CREATe, Kevin T. Crofton Department of Aerospace and Ocean Engineering, Virginia Tech, Blacksburg, VA

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