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Acoustics in Moving Inhomogeneous Media is a complete and rigorous study that covers many fields including atmospheric and ocean acoustics, aeroacoustics, acoustics of turbulent flows, remote sensing of the atmosphere and ocean, and noise pollution in the atmosphere. The book considers sound propagation through moving media with deterministic inhomogeneities such as vertical profiles of temperature and wind velocity in the atmosphere. It moves on to a new study of sound propagation and scattering in media with random inhomogeneities in adiabatic sound speed, density, and medium velocity.
This new edition sets out state-of-the-art numerical methods for calculating the sound field and its statistical characteristics in moving inhomogeneous media, with codes downloadable from the book's website. It presents new extra-wide-angle and wide-angle parabolic equations in moving media, which are applicable for arbitrary Mach numbers, in the high-frequency approximation. Also new starting equations for the finite-difference time-domain simulations, and new formulations for the temporal and frequency coherence of acoustic signals, spectral broadening due to atmospheric turbulence, and the effect of turbulence on pulse propagation, with new experimental results pertinent to the statistical characteristics of the sound field.
This book is essential for graduate students and researchers in a range of theoretical and applied interests in acoustics.
List of contents
Part I. Theoretical foundations of acoustics in moving media 1. Introduction to acoustics in a moving medium 2. Equations for acoustic and internal gravity waves in an inhomogeneous moving medium 3. Geometrical acoustics in an inhomogeneous moving medium 4. Sound propagation in a stratified moving medium 5. Moving sound sources and receivers Part II. Sound propagation and scattering in random moving media 6. Random inhomogeneities in a moving medium and scattering of sound 7. Line-of-sight propagation: Amplitude and phase fluctuations of a sound field 8. Line-of-sight sound propagation: Statistical moments of a sound field 9. Multipath sound propagation in a random moving medium 10. Distributions of acoustic signals Part III. Numerical methods for sound propagation in moving media 11. Numerical representation of random fields 12. Ray acoustics and ground interactions 13. Wave-based frequency-domain methods 14. Wave-based time-domain methods 15. Uncertainty in sound propagation and its quantification
About the author
Vladimir E. Ostashev is a Senior Research Scientists (ret.) with the Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, and a Government Expert for the U.S. Army Engineer Research and Development Center. He is a fellow of the Acoustical Society of America.
D. Keith Wilson is a Research Physical Scientist and Program Manager at the U.S. Army Engineer Research and Development Center. He is a Fellow of the Acoustical Society of America.
