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Author : Rahul Sen
Publisher :
ISBN 13 :
Total Pages : 300 pages
Book Rating : 4.:/5 (186 download)
Download or read book Acoustic Scattering by Discontinuities in Waveguides written by Rahul Sen and published by . This book was released on 1988 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Andrew David Grant
Publisher :
ISBN 13 :
Total Pages : 226 pages
Book Rating : 4.:/5 (111 download)
Download or read book Acoustic Scattering in Waveguides with Smoothly-varying Or Discontinuous Elastic Boundaries written by Andrew David Grant and published by . This book was released on 2001 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Nick V. Solokhin
Publisher : Fultus Corporation
ISBN 13 : 1596821280
Total Pages : 49 pages
Book Rating : 4.5/5 (968 download)
Download or read book Discontinuities in Acoustic Wave-guide and the Reciprocity written by Nick V. Solokhin and published by Fultus Corporation. This book was released on 2007 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work includes numerical analysis of discontinuities in acoustic wave-guide and their properties in multi-mode case. It was suggested new version of reciprocity relations between wave-guide modes: between incident and transmitted and between incident and reflected modes. This new version of reciprocity relations transforms into old one in a case of single traveling mode.
Author : Julian Schwinger
Publisher : CRC Press
ISBN 13 : 9780677018409
Total Pages : 182 pages
Book Rating : 4.0/5 (184 download)
Download or read book Discontinuities in Waveguides written by Julian Schwinger and published by CRC Press. This book was released on 1968 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: First produced by the Swedish Association of Metalworking Industries.
Author : Shelvean Kapita
Publisher :
ISBN 13 : 9781369351200
Total Pages : 134 pages
Book Rating : 4.3/5 (512 download)
Download or read book Plane Wave Discontinuous Galerkin Methods for Acoustic Scattering written by Shelvean Kapita and published by . This book was released on 2016 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: We apply the Plane Wave Discontinuous Galerkin (PWDG) method to study the direct scattering of acoustic waves from impenetrable obstacles. In the first part of the thesis we consider the full exterior scattering problem with smooth boundaries. This problem is modeled by the Helmholtz equation in the unbounded domain exterior to the scatterer. To compute the scattered field, an artificial boundary is introduced to reduce the infinite domain to a finite computational domain. We then apply Dirichlet-to-Neumann (DtN) and Neumann-to-Dirichlet (NtD) boundary conditions on a circular artificial boundary. By using asymptotic properties of Hankel functions, we are able to prove wavenumber explicit L2-norm error estimates for the DtN-PWDG method on quasi-uniform meshes. Numerical experiments indicate that the accuracy of the PWDG method for the scattering problem is improved by the use of DtN and NtD boundary conditions. The second part of the thesis concerns acoustic scattering from domains with corners. In such domains, quasi-uniform meshes are not efficient so we derive error indicators to drive the selective refinement of the mesh in an adaptive algorithm. We prove a posteriori L2-norm error estimates for the Helmholtz equation with impedance boundary conditions on the artificial boundary. Numerical results demonstrate the efficiency of the proposed indicators. This adaptive strategy is compatible with the DtN and NtD truncation of the infinite domain problem and the combination would significantly improve the accuracy and reliability of PWDG simulations.
Author : Claude Bourrely
Publisher : World Scientific
ISBN 13 : 981461887X
Total Pages : 374 pages
Book Rating : 4.8/5 (146 download)
Download or read book Electromagnetic And Acoustic Scattering: Detection And Inverse Problems - Proceedings Of The Conference written by Claude Bourrely and published by World Scientific. This book was released on 1989-03-01 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents:Light Scattering Problems in Astrophysics (J M Perrin)Surface Integral Operators and their Use in Acoustics and Electromagnetics (A Berthon)Acoustic Diffraction by Slender Bodies of Arbitrary Shape (M Tran-Van-Nhieu)High and Low Energy Approximations for the Electromagnetic Scattering by Irregular Objects (B Torresani)Electromagnetic Scattering and Mutual Interactions Between Closely Spaced Spheroids (J Dalmas & R Deleuil)Acoustical Imaging of 2D Fluid Targets Buried in a Half Space: A Diffraction Tomography Approach Using Line-Sources Insonification (B Duchene et al)Contribution of Radar Polarimetry in Radar Target Discrimination. The “Poincaré Planisphere”: a New Representation Method (E Pottier)Electromagnetic and Acoustic Waves in Random Media: from Propagation to Anderson Localization (B Souillard)Weak Disorder: Homogeneisation Method and Propagation (C Bardos)Coherent Propagation of Surface Acoustic Waves in Quasi-Periodic and Random Arrays of Grooves (D Sornette et al)On Asymptotic Behaviour of Waves States in Random Media (F Bentosela & R Rodriguez)A Study of Acoustic Transmission of Transient Signal in a Inhomogeneous Medium with the Help of a Wavelet Transform. Application to an Air-Water Plane Interface (G Saracco & Ph Tchamitchian)Three-Dimensional Impedance Scattering Theory (P Sabatier)Survey of Optimization Algorithms Applied to Inverse Problems (A Roger)A Linearized Inverse Problem: Acoustic Impedance Tomography of Biological Media (J P Lefebvre)and others Readership: Electrical engineers and mathematicians.
Author :
Publisher :
ISBN 13 :
Total Pages : 892 pages
Book Rating : 4.:/5 (31 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Allan D. Pierce
Publisher : Academic Press
ISBN 13 : 1483257762
Total Pages : 395 pages
Book Rating : 4.4/5 (832 download)
Download or read book Underwater Scattering and Radiation written by Allan D. Pierce and published by Academic Press. This book was released on 2013-10-22 with total page 395 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : Guy V. Norton
Publisher :
ISBN 13 :
Total Pages : 252 pages
Book Rating : 4.:/5 (64 download)
Download or read book Theory and Application of Scattering from an Object in an Ocean Waveguide written by Guy V. Norton and published by . This book was released on 1991 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: A method was developed to describe acoustical scattering from an object in a waveguide by using normal mode theory to describe the incident field. Each mode is decomposed at the object into a pair of upgoing and downgoing plane waves. A transition matrix was used (developed via the extended boundary condition method of Waterman) to determine the resulting near-field scattered field. The far-field scattered field was determined by invoking Huygens' principle. This far-field solution satisfies all boundary conditions and preserves continuity of the solution throughout all space. The examples show that the object is correctly coupled to the waveguide. This was done by showing that the object's scattered field acts as a secondary source and that this scattered field obeyed the same boundary conditions as the point source field. This method of determining the scattered field from a three-dimensional object allows one to determine not only the correct target strength (intensity), but also to properly determine the phase. In addition, this method allows the investigation of the interaction between the incident field and the waveguide, the incident field with the object and the object's scattered field with the waveguide. In this manner, a better understanding of the ongoing physical processes can be obtained.
Author : James L. Buchanan
Publisher : SIAM
ISBN 13 : 0898715474
Total Pages : 344 pages
Book Rating : 4.8/5 (987 download)
Download or read book Marine Acoustics written by James L. Buchanan and published by SIAM. This book was released on 2004-01-01 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Marine Acoustics: Direct and Inverse Problems presents current research trends in the field of underwater acoustic wave direct and inverse problems. It is the first to investigate inverse problems in an ocean environment, with heavy emphasis on the description and resolution of the forward scattering problem.
Author : J. J. do Rêgo Silva
Publisher : Computational Mechanics
ISBN 13 :
Total Pages : 160 pages
Book Rating : 4.F/5 ( download)
Download or read book Acoustic and Elastic Wave Scattering Using Boundary Elements written by J. J. do Rêgo Silva and published by Computational Mechanics. This book was released on 1994 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Stanford University. Ginzton Laboratory
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.F/5 ( download)
Download or read book Perturbation and Variational Studies of Acoustic Waveguide Problems written by Stanford University. Ginzton Laboratory and published by . This book was released on 1976 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Peter Malischewsky
Publisher : Walter de Gruyter GmbH & Co KG
ISBN 13 : 3112756673
Total Pages : 232 pages
Book Rating : 4.1/5 (127 download)
Download or read book Surface Waves and Discontinuities written by Peter Malischewsky and published by Walter de Gruyter GmbH & Co KG. This book was released on 1987-12-31 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: No detailed description available for "Surface Waves and Discontinuities".
Author :
Publisher : ScholarlyEditions
ISBN 13 : 146496565X
Total Pages : 1088 pages
Book Rating : 4.4/5 (649 download)
Download or read book Issues in Acoustic and Ultrasound Technology: 2011 Edition written by and published by ScholarlyEditions. This book was released on 2012-01-09 with total page 1088 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues in Acoustic and Ultrasound Technology: 2011 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Acoustic and Ultrasound Technology. The editors have built Issues in Acoustic and Ultrasound Technology: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Acoustic and Ultrasound Technology in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Acoustic and Ultrasound Technology: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
Author : Glenn A. Gesell
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (184 download)
Download or read book Scattering from Multiple Discontinuities in Waveguides written by Glenn A. Gesell and published by . This book was released on 1992 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert Peter Banaugh
Publisher :
ISBN 13 :
Total Pages : 196 pages
Book Rating : 4.3/5 (91 download)
Download or read book Scattering of Acoustic and Elastic Waves by Surfaces of Arbitrary Shape written by Robert Peter Banaugh and published by . This book was released on 1962 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (642 download)
Download or read book Bûtengewoane gearkomste op ... 5 April 1936 selskip Fryslân, Amsterdam written by and published by . This book was released on 1936 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
