Author(s)

A. Tadeu, L. Godinho & J. António

Abstract

Propagation of pressure waves in the vicinity of a rigid inclusion submerged in a channel bounded by an elastic half-space A. Tadeu, L. Godinho & J . Antonio Department of Civil Engineering University of Coimbra, Portugal Abstract The present paper computes the pressure field generated by spatially-sinusoidal harmonic pressure line sources in the vicinity of a rigid inclusion submerged in a fluid channel, bounded by an elastic half-space. The formulation of the problem is performed in the frequency domain. Time solutions are obtained by applying inverse Fourier transforms. The solution is computed using a 2-112-D Boundary Element Method (BEM) model. Only the surface of the rigid inclusion is discretized with boundary elements, since the Green's functions used take the presence of the free surface and of the fluidlelastic interface floor into account. Computer simulations are performed for a fluid waveguide with a submerged rigid inclusion. The time domain responses are presented and discussed

Keywords