WIT Press


Three Dimensional Scattering Of Waves By Multiple Submerged Fixed Cylindrical Cavities In A Fluid Medium

Price

Free (open access)

Paper DOI

10.2495/BE990431

Volume

25

Pages

11

Published

1999

Size

995 kb

Author(s)

A.J.B. Tadeu & L.M.C. Godinho

Abstract

The Boundary Element Method (BEM) was used to evaluate the three- dimensional wave field generated by two submerged fixed cylindrical cavities in a fluid medium insonified by a point pressure source. Because of the cylindrical geometry of this problem, we used the separation of variables and have expressed the solution at each frequency in terms of waves with the varying wavenumber k# (with z being the direction of the cylindrical cavity axis). We subsequently Fourier-transformed these into the spatial domain. We cast this wavenumber transform in discrete form by considering an infinite number of virtual point sources evenly spaced along the z axis, and at a sufficient distance from each other to avoid spatial contamination. In addit

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