Stewart Glegg, William Devenport

Aeroacoustics of Low Mach Number Flows (eBook, ePUB)

Fundamentals, Analysis and Measurement

• Format: ePub

Produktbeschreibung

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.

• 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

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Produktdetails

• Verlag: Elsevier Science & Techn.
• Seitenzahl: 595
• Erscheinungstermin: 26. September 2023
• Englisch
• ISBN-13: 9780443218583
• Artikelnr.: 69054463

Autorenporträt

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.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.

Inhaltsangabe

Part 1: Fundamentals 1. Introduction 2. The equations of fluid motion 3.
Linear acoustics
Part 2: Fundamentals of Aeroacoustics 4. Lighthill's acoustic analogy 5.
The Ffowcs Williams and Hawkings Equation 6. Propeller and Open Rotor Noise
Part 3: Unsteady Blade Loading 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
Part 4: Turbulent Flows 10. Stochastic processes 11. Turbulence and
Turbulent Flows 12. Wall Pressure Fluctuations in Turbulent Boundary Layers
Part 5: Broadband Flow Noise from Surface Interactions and Fans 13.
Broadband Noise from Open Rotors and Leading-edge Noise 14. Trailing Edge
and Roughness Noise 15. Duct Acoustics 16. Fan Noise
Part 6: Experimental Methods 17. Aeroacoustic Testing and Instrumentation
18. Measurement, Signal Processing and Uncertainty 19. Phased Arrays
Part 7 Advanced Mathematical Methods 20. The Theory of Edge Scattering