Author: Harlan Glen FreyPublisher:
ISBN:
Category : Sound
Languages : en
Pages : 96
Book Description
Acoustic Scattering by Fluid Spheres
Author: Harlan Glen FreyPublisher:
ISBN:
Category : Sound
Languages : en
Pages : 96
Book Description
Acoustic Scattering and Attenuation by Solid Spheres in Fluids
Author: D. G. MercerAcoustic Resonance Scattering
Author: Herbert ÜberallPublisher: CRC Press
ISBN: 9782881245138
Category : Science
Languages : en
Pages : 364
Book Description
These 13 papers were part of a May 1989 symposium at the Catholic University of America, Washington, D.C., the home of much of the early theoretical and experimental work in acoustic resonance scattering. Topics include a historical survey of the development of the subject, a description of the MIIR and short- pulse methods, and new developments such as the derivation of exact acoustic background shells, application of the method of moments, and S-matrix product expansions. Annotation copyright by Book News, Inc., Portland, OR
Acoustical Scattering from an Elastic Sphere in Water
Author: Kevin Lee WilliamsPublisher:
ISBN:
Category : Sound-waves
Languages : en
Pages : 322
Book Description
The Foundations of Acoustics
Author: Eugen SkudrzykPublisher: Springer Science & Business Media
ISBN: 3709182557
Category : Science
Languages : en
Pages : 816
Book Description
Research and scientific progress are based upqn intuition coordinated with a wide theoretical knowledge, experimental skill, and a realistic sense of the limitations of technology. Only a deep insight into physical phenomena will supply the necessary skills to handle the problems that arise in acoustics. The acoustician today needs to be well acquainted with mathematics, dynamics, hydrodynamics, and physics; he also needs a good knowledge of statistics, signal processing, electrical theory, and of many other specialized subjects. Acquiring this background is a laborious task and would require the study of many different books. It is the goal of this volume to present this background in as thorough and readable a manner as possible so that the reader may turn to specialized publications or chapters of other books for further information without having to start at the preliminaries. In trying to accomplish this goal, mathematics serves only as a tool; the better our understanding of a physical phenomenon, the less mathematics is needed and the shorter and more concise are our computa tions. A word about the choice of subjects for this volume will be helpful to the reader. Even scientists of high standing are frequently not acquainted with the fundamentals needed in the field of acoustics. Chapters I to IX are devoted to these fundamentals. After studying Chapter I, which dis cusses the units and their relationships, the reader should have no difficulty converting from one system of units to any other.
Acoustic Radiation and Scattering from Two Eccentrically Positioned Spheres
Author: William ThompsonPublisher:
ISBN:
Category :
Languages : en
Pages : 234
Book Description
Problems of acoustic radiation and scattering from a pair of finite sized eccentrically positioned spheres are analyzed. Solutions are obtained for the radiated and scattered waves in the form of series of wave harmonics. The analysis leads to infinite sets of linear algebraic equations for the unknown modal pressure coefficients. Approximate solutions are obtained by truncating to finite size and solving numerically. The radiation impedance and farfield directivity of an arbitrary spherical source within a fluid sphere (idealization of spherical acoustic lens with internal focal point) is computed. (Author).
Sound Scattering on Spherical Objects
Author: Tom RotherPublisher: Springer Nature
ISBN: 3030364488
Category : Science
Languages : en
Pages : 265
Book Description
This book introduces readers to scattering from a practical/numerical point of view. The focus is on basic aspects like single scattering, multiple scattering, and whether inhomogeneous boundary conditions or inhomogeneous scatterers have to be taken into account. The powerful T-matrix approach is explained in detail and used throughout the book, and iterative solution methods are discussed. In addition, the book addresses appropriate criteria for estimating the accuracy of numerical results, as well as their importance for practical applications. Python code is provided with each chapter, and can be freely used and modified by readers. Moreover, numerous scattering results for different configurations are provided for benchmarking purposes. The book will be particularly valuable for those readers who plan to develop their own scattering code, and wish to test the correct numerical implementation of the underlying mathematics.
Underwater Scattering and Radiation
Author: Allan D. PiercePublisher: Academic Press
ISBN: 1483257762
Category : Technology & Engineering
Languages : en
Pages : 395
Book Description
Underwater Scattering and Radiation describes the relevant theoretical foundations of underwater scattering and radiation. Acoustic scattering from elastic solids is discussed, and variational formulations in acoustic radiation and scattering are presented. Surface waves and quasi-cylindrical modes are also explored, along with the Helmholtz-Kirchhoff integral corollaries. Comprised of two chapters, this volume begins with a comprehensive account of scattering by elastic objects, focusing on the classic idealized shapes of spheres and infinite cylinders. The reader is introduced to important concepts such as normal modes, the S-matrix, and the T-matrix as well as resonances, whispering gallery modes, Franz modes, and Stoneley waves. Subsequent sections describe methods for treating scattering by elastic bodies of more general shapes. The T-matrix formalism is discussed and then applied to spheroidal scatterers and finite cylinders. The second chapter analyzes how variational principles can be used in acoustics, with the choice of topics directed toward applications to underwater acoustic radiation and scattering. This book will be of interest to physicists.
Sound Scattering by a Layered Sphere
Author: S. J. AnsleyPublisher:
ISBN:
Category : Echo scattering layers
Languages : en
Pages : 27
Book Description
The sphere, which is located in an acoustic fluid, is composed of an arbitrary number of concentric layers of elastic solids and fluids. It is excited by a time-harmonic incident plane wave. The exact linear equations of elasto-dynamics, visco-dynamics and acoustics are solved to obtain, via the finite element method, a matrix equation which connects the interface displacements and external stresses in the spectral domain. The pressure scattered to the far-field is obtained from the radial spectral displacements of the outer surface. Numerical results of scattered sound spectra are presented for the case of an aluminium shell with and without a GRP (Glass Reinforced Plastics) coating. (Great Britain).
Author: Per-Åke Jansson