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Computational Atmospheric Acoustics - Erik M. Salomons

Computational Atmospheric Acoustics

Hardcover

Published: 31st August 2001
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Noise from cars, trains, and aeroplanes can be heard at large distances from the source. Accurate predictions of the loudness of the noise require accurate computations of sound propagation in the atmosphere. This book describes models that can be used for these computations. The models take into account complex effects of the atmosphere and the ground surface on sound waves, including the effects of wind and temperature distributions, atmospheric turbulence, irregular terrain, and noise barriers.
The main text of the book focuses on physical effects in atmospheric acoustics. The effects are illustrated by many numerical examples. The main text requires a very limited mathematical background from the reader; detailed mathematical descriptions of the models, developed from the basic principles of acoustics, are presented in appendices. Models for moving media are compared with models that are based on the effective sound speed approach. Both two-dimensional models and three-dimensional models are presented. As meteorological effects play an important role in atmospheric acoustics, selected topics from boundary layer meteorology and the theory of turbulence are also presented.

`This book is excellent for readers who have a fairly good background in atmospherical acoustics. Readers who have little knowledge in atmospheric acoustics will find this book to be educational and very interesting.' Ding Lee, Journal of Computational Acoustics, 10:1

preface
Introductionp. 1
Unbounded homogeneous atmospherep. 5
Homogeneous atmosphere above a ground surfacep. 21
Atmospheric refractionp. 37
Atmospheric turbulencep. 67
Irregular terrainp. 77
Noise barriersp. 85
Basic acoustic equations for a homogeneous atmospherep. 91
Free field of a point sourcep. 99
Acoustic impedancep. 113
Reflection of sound wavesp. 123
Basic acoustic equations for a layered refracting atmospherep. 139
Generalized Fast Field Program (FFP)p. 153
Parabolic Equation (PE) methodp. 163
Green's Function Parabolic Equation (GFPE) methodp. 181
Atmospheric turbulencep. 203
Atmospheric turbulence in the PE methodp. 221
Analytical model for a non-refracting turbulent atmospherep. 231
Ray model including caustic diffraction fieldsp. 239
Computational methods for irregular terrainp. 263
Wind and temperature profiles in the atmospherep. 279
Sound propagation over a screenp. 289
The method of stationary phasep. 297
Referencesp. 301
List of symbolsp. 314
Indexp. 327
Table of Contents provided by Blackwell. All Rights Reserved.

ISBN: 9780792371618
ISBN-10: 0792371615
Audience: Professional
Format: Hardcover
Language: English
Number Of Pages: 335
Published: 31st August 2001
Publisher: Springer
Country of Publication: NL
Dimensions (cm): 24.13 x 16.51  x 2.54
Weight (kg): 0.67