局部开孔防波堤对斜向波反射的理论分析和试验研究  

Theoretical and experimental study on wave reflection from partially perforated breakwater

作　　者：李玉成[1] 刘洪杰 董国海[1] 

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116023 [2]浙江省交通规划设计研究院,浙江杭州310006

出　　处：《水利学报》2004年第10期63-70,共8页Journal of Hydraulic Engineering

基　　金：交通部规范修订基金(010642);国家自然科学基金委与香港科学研究署联合基金资助项目(49910161985);霍英东教育基金(81068)

摘　　要：本文通过理论分析和试验研究相结合的方法,探讨了斜向规则波与局部开孔防波堤的相互作用。流体运动的计算域被分成两个子域,一个区位于开孔沉箱结构物外侧,另一个区位于结构物内。在每个子区域内,应用分离变量法和特征函数展开法以求得相应的速度势,在速度势的特征展开中考虑了非传播模态波。理论计算与试验结果对比表明,二者符合较好。基于对不同因素影响的分析,给出了斜向规则波在局部开孔结构前反射率的简化计算公式,在工程设计中可用于预估类似条件下结构物前的波浪反射率。The reflection of oblique incident waves from a partially perforated breakwater is studied theoretically and experimentally. The computation domain of the fluid flow is divided into two parts. One part is the flow field outside of the breakwater and the other one is the flow inside of the perforated structure. The eigen-function method is applied to obtain the velocity potential of these two computational parts. In the eigen-expansion of velocity potential evanescent waves are considered. The validity of theoretical calculation is verified by experimental data. Furthermore, an empirical formula for calculating the reflection of oblique incident waves from a partially perforated breakwater is proposed.

关 键 词：反射率 局部开孔防波堤 斜向波 特征展开 

分 类 号：U656.22[交通运输工程—港口、海岸及近海工程]