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

Keywords