Effect of the Shape of Absorbing Revetment on Wave Overtopping Rate

J. Ocean Eng. Technol. 2008;22(6):7-12.

Hur Dong-Soo,Choi Dong-Seok,Choi Sun-Ho

Institute of marine industry Department of Civil and Environmental Engineering Gyeongsang National University,Department of Civil and Environmental Engineering Gyeongsang National University,Department of Civil Engineering Changshin College

소파호안의 형상이 월파량에 미치는 영향

허동수,최동석,최선호

경상대학교 토목환경공학부 해양산업연구소,경상대학교 토목환경공학부,창신대학 토목과

Keywords: Two-dimensional numerical model, Shape of absorbing revetment, Irregular waves, Wave overtopping, Porosity, Mean grain size

핵심용어: 2차원 수치모델, 소파호안 형상, 불규칙파, 월파, 공극률, 평균입경

Abstract

The present study numerically investigates the effect of the shape of absorbing revetment on wave overtopping rate under regular and irregular incident waves. At first, the numerical model developed by Hur and Choi(2008), which considers the flow through a porous medium with inertial, laminar and turbulent resistance terms, directly simulates Wave-Structure-Sandy seabed interaction and can determine the eddy viscosity with LES turbulent model in 2-Dimensional wave field (LES-WASS-2D), is validated when compared to experimental data. Numerical simulations are then performed to examine the effect of the shape of absorbing revetment and incident wave conditions on wave overtopping rate. The numerical result shows that the wave overtopping rate decreases with the slope gradient of absorbing revetment under both regular and irregular waves. In addition, the effects of mean grain size and porosity of absorbing revetment, incident wave period and crest height on wave overtopping rate are discussed.