Three-dimensioanl wave scattering by a fixed cylindrical inclusion submerged in a fluid medium

摘要

This paper presents the solution for a fixed cylindrical irregular cavity of infinite length submerged in a homogeneous fluid medium, and subjected to dilatational point sources placed at some point in the fluid. The solution is first computed for a wide range of frequencies and wavenumbers, which are then sued to obtain time-series by means of (fat) inverse Fourier transforms into space-time. The method and the expressions presented are implemented and validated by applying them to a fixed cylindrical circular cavity submerged in an infinite homogeneous fluid medium subjected to a point pressure source for which the solution is calculated in closed form.