Theory of Vortex Sound [Paperback]

The book is an introduction to theory of sound generation by fluid flow.The book is an introduction to theory of sound generation by fluid flow, specially written for a one semester course at advanced undergraduate or graduate level.It starts with a review of elementary theoretical acoustics and proceeds to a unified treatment of low Mach number `vortex-surface' interaction noise in terms of the compact Green's function. Problems are provided at the end of each chapter, many of which can be used for extended student projects. A whole chapter is devoted to worked examples.The book is an introduction to theory of sound generation by fluid flow, specially written for a one semester course at advanced undergraduate or graduate level.It starts with a review of elementary theoretical acoustics and proceeds to a unified treatment of low Mach number `vortex-surface' interaction noise in terms of the compact Green's function. Problems are provided at the end of each chapter, many of which can be used for extended student projects. A whole chapter is devoted to worked examples.This is an introduction to the branch of fluid mechanics concerned with the production of sound by hydrodynamic flows. It is designed for a one semester introductory course at the advanced undergraduate or graduate level. Great care is taken to explain underlying fluid mechanical and acoustic concepts, and to describe fully the steps in a complicated derivation. The discussion deals specifically with low Mach number flows, which enables the sound produced by `vortex-surface' interactions to be analyzed using the `compact Green's function'. This provides a routine procedure for estimating the sound, and an easy identification of those parts of a structure that are likely to be important sources of sound.Preface; 1. Introduction; 2. Lighthill's theory; 3. The compact Green's function; 4. Vorticity; 5. Vortex sound; 6. Vortex-surface interaction noise in two-dimensions; 7. Problems in three-dimensions; 8. l£5