WAVE TRANSMISSION THROUGH AND REFLECTION BY PERVIOUS COASTAL STRUCTURES

Abstract

 Laboratory experiments were performed to study wave transmission and reflection capacity by pervious structures as coastal protection from waves. The energy dissipated in pervious structures may be evaluated by using the drag forces acting on the pervious structures and particle velocities of principal waves in structures. A theoretical analysis based on application of the continuity and energy equations to the flow through the pervious structures were made to evaluate wave transmission and wave reflection capacity of structures. The transmission coefficient K_t and reflection coefficient K_r of a) Porous media, b) Blocks of detached breakwater and c) Wave dissipating caisson with circular cylinders in front of wall were also studied experimentally and theoretically.