Analytical and Experimental Research on Wave Scattering by an Open-Type Rectangular Breakwater with Horizontal Perforated Plates  

作　　者：HE Shuyue LIU Yong LI Huajun 

机构地区：[1]Fisheries College,Ocean University of China,Qingdao 266003,China [2]Shandong Province Key Laboratory of Ocean Engineering,Ocean University of China,Qingdao 266100,China

出　　处：《Journal of Ocean University of China》2024年第5期1185-1201,共17页中国海洋大学学报（英文版）

基　　金：supported by the National Natural Sci-ence Foundation of China(Nos.52201345,and 52001293);the New Cornerstone Science Foundation through the XPLORER PRIZE.

摘　　要：This study proposes a novel open-type rectangular breakwater combined with horizontal perforated plates on both sides to enhance the sheltering effect of the rectangular box-type breakwaters against longer waves.The hydrodynamic characteristics of this breakwater are analyzed through analytical potential solutions and experimental tests.The quadratic pressure drop conditions are exerted on the horizontal perforated plates to facilitate assessing the effect of wave height on the dissipated wave energy of breakwater through the analytical solution.The hydrodynamic quantities of the breakwater,including the reflection,transmission,and energyloss coefficients,together with vertical and horizontal wave forces,are calculated using the velocity potential decomposition method as well as an iterative algorithm.Furthermore,the reflection and transmission coefficients of the breakwater are measured by conducting experimental tests at various wave periods,wave heights,and both porosities and widths of the horizontal perforated plates.The analytical predicted results demonstrate good agreement with the iterative boundary element method solution and measured data.The influences of variable incident waves and structure parameters on the hydrodynamic characteristics of the breakwater are investigated through further calculations based on analytical solutions.Results indicate that horizontal perforated plates placed on the water surface for both sides of the rectangular breakwater can enhance the wave dissipation ability of the breakwater while effectively decreasing the transmission and reflection coefficients.

关 键 词：rectangular breakwater horizontal perforated plates analytical solution experimental test hydrodynamic characteristics 

分 类 号：U656.2[交通运输工程—港口、海岸及近海工程]