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A Coupled FE and DtN Mapping Method for the Exterior Problem of the Helmholtz Equation in an Oceanic Waveguide

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The interaction of acoustic waves with a scattering object in an oceanic waveguide was considered. A finite-element method was developed to solve numerically the acoustic scattering problem based on the Galerkin variational principle and the DtN mapping method. The results show that the proposed method is valid and its numerical implementation is very fast. Moreover, the characteristics of the scattering waves by an obstacle in an oceanic waveguide and multiple scattering effects between the obstacle and the waveguide boundaries were numerically analysized.
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Document Type: Research Article

Publication date: 01 March 2008

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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