Book description
Aeroacoustics of Low Mach Number Flows: Fundamentals, Analysis, and Measurement provides a comprehensive treatment of sound radiation from subsonic flow over moving surfaces, which is the most widespread cause of flow noise in engineering systems. This includes fan noise, rotor noise, wind turbine noise, boundary layer noise, and aircraft noise.
Beginning with fluid dynamics, the fundamental equations of aeroacoustics are derived and the key methods of solution are explained, focusing both on the necessary mathematics and physics. Fundamentals of turbulence and turbulent flows, experimental methods and numerous applications are also covered.
The book is an ideal source of information on aeroacoustics for researchers and graduate students in engineering, physics, or applied math, as well as for engineers working in this field.
Supplementary material for this book is provided by the authors on the website www.aeroacoustics.net. The website provides educational content designed to help students and researchers in understanding some of the principles and applications of aeroacoustics, and includes example problems, data, sample codes, course plans and errata. The website is continuously being reviewed and added to.
- Explains the key theoretical tools of aeroacoustics, from Lighthill’s analogy to the Ffowcs Williams and Hawkings equation
- Provides detailed coverage of sound from lifting surfaces, boundary layers, rotating blades, ducted fans and more
- Presents the fundamentals of sound measurement and aeroacoustic wind tunnel testing
Table of contents
- Cover image
- Title page
- Table of Contents
- Copyright
- Dedication
- Preface
-
Part 1: Fundamentals
- 1: Introduction
- 2: The equations of fluid motion
-
3: Linear acoustics
- Abstract
- 3.1 The acoustic wave equation
- 3.2 Plane waves and spherical waves
- 3.3 Harmonic time dependence
- 3.4 Sound generation by a small sphere
- 3.5 Sound scattering by a small sphere
- 3.6 Superposition and far field approximations
- 3.7 Monopole, dipole, and quadrupole sources
- 3.8 Acoustic intensity and sound power output
- 3.9 Solution to the wave equation using Green's functions
- 3.10 Frequency domain solutions and Fourier transforms
- 4: Lighthill's acoustic analogy
- 5: The Ffowcs Williams and Hawkings equation
- 6: The linearized Euler equations
- 7: Vortex sound
- 8: Turbulence and stochastic processes
- 9: Turbulent flows
- Part 2: Experimental approaches
- Part 3: Edge and boundary layer noise
- Part 4: Rotating blades and duct acoustics
- Appendix A: Nomenclature
- Appendix B: Branch cuts
- Appendix C: The cascade blade response function
- Index
Product information
- Title: Aeroacoustics of Low Mach Number Flows
- Author(s):
- Release date: February 2017
- Publisher(s): Academic Press
- ISBN: 9780128097939
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