Computational Methods For Acoustics Problems

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Computational Methods For Acoustics Problems

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Author : Frédéric Magoulès
language : en
Publisher:
Release Date : 2008

Computational Methods For Acoustics Problems written by Frédéric Magoulès and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Mathematics categories.

"This volume presents in eleven chapters key computational methods for acoustics and vibro-acoustics problems. Each chapter, written by different authors, presents a state of the art of well-established or innovative methods, techniques or algorithms. A bibliography is included at the end of each chapter."--BOOK JACKET.

Computational Acoustics

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Author : David R. Bergman
language : en
Publisher: John Wiley & Sons
Release Date : 2018-04-09

Computational Acoustics written by David R. Bergman and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-04-09 with Mathematics categories.

Covers the theory and practice of innovative new approaches to modelling acoustic propagation There are as many types of acoustic phenomena as there are media, from longitudinal pressure waves in a fluid to S and P waves in seismology. This text focuses on the application of computational methods to the fields of linear acoustics. Techniques for solving the linear wave equation in homogeneous medium are explored in depth, as are techniques for modelling wave propagation in inhomogeneous and anisotropic fluid medium from a source and scattering from objects. Written for both students and working engineers, this book features a unique pedagogical approach to acquainting readers with innovative numerical methods for developing computational procedures for solving problems in acoustics and for understanding linear acoustic propagation and scattering. Chapters follow a consistent format, beginning with a presentation of modelling paradigms, followed by descriptions of numerical methods appropriate to each paradigm. Along the way important implementation issues are discussed and examples are provided, as are exercises and references to suggested readings. Classic methods and approaches are explored throughout, along with comments on modern advances and novel modeling approaches. Bridges the gap between theory and implementation, and features examples illustrating the use of the methods described Provides complete derivations and explanations of recent research trends in order to provide readers with a deep understanding of novel techniques and methods Features a systematic presentation appropriate for advanced students as well as working professionals References, suggested reading and fully worked problems are provided throughout An indispensable learning tool/reference that readers will find useful throughout their academic and professional careers, this book is both a supplemental text for graduate students in physics and engineering interested in acoustics and a valuable working resource for engineers in an array of industries, including defense, medicine, architecture, civil engineering, aerospace, biotech, and more.

Computational Methods For A Class Of Problems In Acoustic Elastic And Water Waves

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Author :
language : en
Publisher:
Release Date : 2009

Computational Methods For A Class Of Problems In Acoustic Elastic And Water Waves written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Acoustic surface waves categories.

This dissertation is concerned with numerical solutions of a class of boundary value problems in acoustic, elastic and nonlinear water waves, and consists of two independent parts. In the first part, we deal with the application of variational methods, including the finite element method, the boundary element method as well as their coupling, to solutions of three specific two-dimensional boundary value problems in acoustics and elastodynamics. To be more precise, we first study the application of finite element methods to the solution of exterior Neumann problems in acoustics. The original problem is reduced to a nonlocal boundary value problem in a bounded domain by introducing an artificial boundary. We employ, respectively, a direct boundary integral equation method and a Foureier series expansion method to define corresponding Dirichlet-to-Neumann mappings on the artificial boundary. Weak formulations for the resulting nonlocal boundary value problems are carefully studied. Thereafter, we employ the boundary element methods to seek solutions of two type of transmission problems in acoustics and fluid-structure interaction, respectively. The original transmission problems are reduced to a system of coupled boundary integral equations. We are interested in their weak formulations. Uniqueness and existence for the weak solutions are carefully investigated in appropriate Sobolev spaces. For each specific problem, a sequence of numerical tests are implemented to illustrate the accuracy and efficiency of the solution procedures. During these tests, in addition to the standard boundary element method, fast multipole methods are also employed for the numerical treatment of boundary integral equations to be involved. In the second part, we present an accurate and efficient numerical model for the simulation of fully nonlinear, three-dimensional surface water waves on infinite or finite depth. The numerical method is based on the reduction of the problem to a lower-dimensional Hamiltonian system involving surface quantities alone. This is accomplished by introducing an Dirichlet-to-Neumann mapping which is represented in terms of its Taylor series expansion in homogeneous powers of the surface elevation. The validity of the model and the efficiency of the method are illustrated by simulating the long-time evolution of two-dimensional steadily progressing waves, as well as the development of three-dimensional (short-crested) nonlinear waves, both in deep and shallow water.

Computational Methods For Problems Of Acoustics With Particular Reference To Exterior Domains

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Author : Stanford University. Division of Applied Mechanics. Division of Applied Mechanics
language : en
Publisher:
Release Date : 1991

Computational Methods For Problems Of Acoustics With Particular Reference To Exterior Domains written by Stanford University. Division of Applied Mechanics. Division of Applied Mechanics and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with categories.

Research In Computational Methods For Structural Acoustics

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Author :
language : en
Publisher:
Release Date : 1996

Research In Computational Methods For Structural Acoustics written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with categories.

The study of structural acoustics and fluid-structure interaction involves the solution of problems of acoustic radiation and scattering, elastic and structural wave propagation, and their interaction. Only relatively few, simple cases can be solved analytically and when the wavelength is of the same order as characteristic length scales asymptotic methods usually cannot be employed. Thus, most configurations of practical interest must be solved by standard computational tools such as boundary element, finite difference and finite element methods. Exterior problems of wave propagation pose a unique challenge to computation since the unbounded region is inappropriate for direct implementation of computational techniques. The derivation of mathematically sound continuous formulations that provide suitable bases for the computation of solutions to exterior problems of acoustics is not a trivial task. The performance of numerical methods that are then based on such a formulation, in terms of accuracy and convergence, as well as computational cost effectiveness, also requires careful consideration. This work reviews recent developments in numerical methods that address these issues.

Computational Acoustics Of Noise Propagation In Fluids Finite And Boundary Element Methods

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Author : Steffen Marburg
language : en
Publisher: Springer Science & Business Media
Release Date : 2008-02-27

Computational Acoustics Of Noise Propagation In Fluids Finite And Boundary Element Methods written by Steffen Marburg and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-02-27 with Science categories.

The book provides a survey of numerical methods for acoustics, namely the finite element method (FEM) and the boundary element method (BEM). It is the first book summarizing FEM and BEM (and optimization) for acoustics. The book shows that both methods can be effectively used for many other cases, FEM even for open domains and BEM for closed ones. Emphasis of the book is put on numerical aspects and on treatment of the exterior problem in acoustics, i.e. noise radiation.

Computational Methods For Infinite Domain Media Structure Interaction

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Author : American Society of Mechanical Engineers. Winter Annual Meeting
language : en
Publisher:
Release Date : 1981

Computational Methods For Infinite Domain Media Structure Interaction written by American Society of Mechanical Engineers. Winter Annual Meeting and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Mathematics categories.

Computational Techniques And Applications Ctac 85

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Author : John Noye
language : en
Publisher: Elsevier Science & Technology
Release Date : 1986

Computational Techniques And Applications Ctac 85 written by John Noye and has been published by Elsevier Science & Technology this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Computers categories.

Proceedings Of The Asme Noise Control And Acoustics Division

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Author :
language : en
Publisher:
Release Date : 2003

Proceedings Of The Asme Noise Control And Acoustics Division written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Acoustic emission categories.

Ocean Acoustic Propagation By Finite Difference Methods

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Author : Ding Lee
language : en
Publisher: Pergamon
Release Date : 1988

Ocean Acoustic Propagation By Finite Difference Methods written by Ding Lee and has been published by Pergamon this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Science categories.

Hardbound. A concise guide to the theory and application of numerical methods for predicting ocean acoustic propagation, also providing an introduction to numerical methods, with an overview of those methods presently in use. An in-depth development of the implicit-finite-difference technique is presented together with bench-mark test examples included to demonstrate its application to realistic ocean environments. Other applications include atmospheric acoustics, plasma physics, quantum mechanics, optics and seismology.