近岸反射对半潜式Jarlan型开孔防波堤水动力特性的影响机理研究

项目名称： 近岸反射对半潜式Jarlan型开孔防波堤水动力特性的影响机理研究

项目编号： No.51279224

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 水利工程

项目作者： 刘勇

作者单位： 中国海洋大学

项目金额： 80万元

中文摘要： 在青年科学基金项目研究中，建立了半潜式Jarlan型开孔防波堤水动力特性的计算分析方法，试验研究了半潜式防波堤的水动力特性，研究表明：半潜式防波堤具有低透射、低反射、受力小的特点，是一种很有发展前途的新型防波堤结构。发表学术论文17篇（3篇录用待刊），其中7篇为国际SCI期刊论文（6篇为申请人第一作者）。 青年科学基金项目没有考虑近岸反射的影响，考虑到近岸反射引起的半潜式防波堤与近岸结构之间的水动力干涉将严重影响防波堤的自身安全与掩护效果，本申请项目拟建立近岸部分反射边界条件下半潜式Jarlan型开孔防波堤的水动力计算分析方法，分析防波堤水动力特性的影响规律，以此为基础开展物理模型试验研究，结合数值与试验结果，阐明近岸反射对半潜式防波堤水动力特性的影响机理，提出半潜式防波堤新结构的设计理论，促进我国海岸工程新结构的基础理论研究与工程应用。

中文关键词： Jarlan型防波堤；近岸反射；水动力分析；能量耗散；设计准则

英文摘要： In the study of present NSFC project, we have developed a mathematical model for analyzing the hydrodynamic performance of partially immersed Jarlan-type perforated breakwaters. Also experimental tests have been conducted to investigate the hydrodynamic performance of the breakwater. It has been found that the transmission and reflection coefficients of the new breakwater are small. The wave forces acting on the breakwater are also small. The partially immersed Jarlan-type breakwater is a promising new type structure. We have published 17 papers (3 papers in press) and seven of them are international journal papers and indexed by SCI database (the proposer is the first author in 6 papers). The effect of coastal reflection has not been considered in the present NSFC project. The coastal reflection may induce wave resonance between coastal structures and partially immersed breakwaters, which may affect the safety and the shelter function of breakwaters. So this proposal will develop a new mathematical model for wave interaction with the partially immersed Jarlan-type perforated breakwater with leeside partially reflecting boundary condition. The mathematical model will be used to analyze the hydrodynamic performance of the breakwater. Based on the numerical results, experimental tests are designed and conduct

英文关键词： Jarlan-type breakwater；Coastal reflection；Hydrodynamic analysis；Energy dissipation；Design rules