Wave interactions with permeable vertical barriers

摘要

The present paper outlines the numerical calculation of wave interactions with a pair of thin permeable vertical slotted barriers extending from the water surface to some distance above the seabed. The numerical model is based on an eigenfunction expansion method and utilizes a boundary condition at the surface of each barrier which accounts for energy dissipation within the barrier. Relevant numerical results which are presented relate to the transmission and reflection coefficients and the wave force on the upwave and downwave barriers. The influence of different permeabilities in the upwave and downwave barriers is described and the practical implications of the results are discussed.