Shape optimization of acoustic scattering bodies

    Authors

    E. A. Divo; A. J. Kassab;M. S. Ingber

    Abbreviated Journal Title

    Eng. Anal. Bound. Elem.

    Keywords

    scattering body; Burton-Miller algorithm; genetic algorithms; GENETIC ALGORITHMS; RADIATION; DESIGN; NOISE; Engineering, Multidisciplinary; Mathematics, Interdisciplinary; Applications

    Abstract

    Shape optimization of acoustic scattering bodies is carried out using genetic algorithms (GA) coupled to a boundary element method for exterior acoustics. The BEM formulation relies on a modified Burton-Miller algorithm to resolve exterior acoustics and to address the uniqueness issue of the representation problem associated with the Helmholtz integral equation at the eigenvalues of the associated interior problem. The particular problem of interest considers an incident wave approaching an axisymmetric shaped body. The objective is to arrive at a geometric configuration that minimizes the acoustic intensity captured by a receiver located at a distance from the scattering body. In particular. the acoustic intensity is required to be minimum as measured proportional to the integral of the product of the potential and its complex conjugate over a volume of space which models the receiver. This is opposed to the more traditional measure of the potential at a single point in space. (C) 2003 Published by Elsevier Ltd.

    Journal Title

    Engineering Analysis with Boundary Elements

    Volume

    27

    Issue/Number

    7

    Publication Date

    1-1-2003

    Document Type

    Article

    Language

    English

    First Page

    695

    Last Page

    703

    WOS Identifier

    WOS:000184993000006

    ISSN

    0955-7997

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