Determination of Far-Field Pattern of Rigid Scatterers Using Independent Finite Element Method and Eigenfunction Expansion, Part 1: Axisymmetric Scattering

[+] Author and Article Information
C. P. Vendhan, C. Prabavathi

Indian Institute of Technology, Madras, 600 036 India

J. Vib. Acoust 118(4), 575-582 (Oct 01, 1996) (8 pages) doi:10.1115/1.2888337 History: Received August 01, 1995; Online February 26, 2008


The near-field steady state scattered potential around a rigid scatterer subjected to plane incident wave is computed using the finite element method with radiation boundary dampers on a finite truncation boundary. Then the solution in the outer domain is sought in the form of an eigenfunction expansion and the expansion coefficients are obtained using the finite element solution on the truncation boundary as Dirichlet boundary condition. The scattered far-field pattern is derived from this solution for prolate spheroid and hemispherically capped cylinder problems.

Copyright © 1996 by The American Society of Mechanical Engineers
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