The scattering of the field of a point source by an axisymmetric screen with a variable impedance |
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Authors: | Kh. T. Aleroeva A. G. Kyurkchan S. A. Manenkov |
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Affiliation: | 1. Moscow Technical University of Communication and Informatics, ul. Aviamotornaya 8a, Moscow, 111024, Russia
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Abstract: | The method of continued boundary conditions is used to solve the acoustic diffraction problem for the case of a field generated by a point source and diffracted by an axisymmetric screen, with generalized impedance boundary conditions being satisfied at the screen surface. Two types of impedance boundary conditions are considered, which differ; at zero impedance one of them takes the form of the Dirichlet boundary condition, while the other the takes the form of the Neumann boundary condition. Both stationary and non-stationary diffraction problems are investigated. Numerical results are obtained for screens with parabolic and spherical shapes. |
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