Author(s): H. M. Hu
Linked Author(s): Henry (Haiming) Hu
Keywords: Wave reflection and transmission; Submerged plate; Porous wall; Linear wave theory; Wave force
Abstract: A two-dimensional analytical solution is presented to study the reflection and transmission of small-amplitude water waves propagating past a submerged horizontal plate and through a vertically-slitted wall. The velocity potential in each fluid domain is formulated using three sets of orthogonal eigenfunctions and the unknown coefficients are determined from the matching conditions between domains. The hydrodynamic force acting on the porous wall is then examined. The performance of the breakwater system is evaluated in terms of reflection and transmission coefficients. Several comparisons are conducted to test the analytical solution against available laboratory measurements. It is found that the wave reflection and transmission coefficients and the hydrodynamic force from the analytical solution are, generally, in good agreement with the measured data. It is shown that the submerged plate plays an important role in reducing the transmitted waves, especially at the longer wavelengths.
Year: 2001