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Numerical solution of parabolic equations for strongly curved focusing sources

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In this work the sound field of a source shaped as a spherical cap and mounted in a baffle is studied. The curvature of the source can be large. Close to the boundary the Mixed Model Equation is used to describe the sound field, and near the focal plane the KZK equation is applied. Numerical solutions of these equations are presented. Our model represents an alternative to earlier models for the linear sound propagation of sources with large curvature, since it does not treat the boundary condition in the same manner as these models. The model presented in this paper can also describe nonlinear sound propagation.

Document Type: Research Article

Publication date: September 1, 1996

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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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