圆弧型贯底式防波堤上波浪作用力的解析研究  

Analytical study on the wave force of arc-shaped bottom-mounted breakwaters

作　　者：楚玉川[1] 程建生[1] 赵鑫 王景全[1] 

机构地区：[1]中国人民解放军理工大学野战工程学院,南京210007 [2]长江勘测规划设计院新能源设计咨询公司,武汉430010

出　　处：《水动力学研究与进展（A辑）》2014年第2期212-217,共6页Chinese Journal of Hydrodynamics

基　　金：上海交通大学海洋工程国家重点实验室基金项目(0907)~~

摘　　要：该文采用特征函数展开与流场匹配方法研究波浪与圆弧型贯底式防波堤的相互作用,进而得到防波堤上的波浪作用力。假定防波堤刚性、空间固定、薄壁、不可渗透且水深恒定,延伸防波堤圆弧段形成的虚设柱面将整个流场划分为内、外两个区域,在公共边界上按速度连续、压力连续的原则,将速度势用特征函数展开匹配,可得流域中任意一点的速度势和圆弧型防波堤上的波浪作用力。计算结果表明:防波堤上作用力大小与圆弧型防波堤张角、入射波圆频率、入射角和水深等因素变化密切相关。Theoretical study is carried out to investigate water wave interaction with arc-shaped bottom-mounted breakwater by the methods of matched eigenfunction expansions with the flow and the wave forces acting on it are obtained. The breakwater is assumed to be rigid, thin, fixed, impermeable and located in water of constant depth. The fluid domain is divided into two sub-regions of inner and outer by introducing an imaginary circular interface. The velocity potential in each region is expanded by eigenfunctions. By satisfying continuity of the normal velocity and pressure at the public circle boundary, the distribution of velocity potential and wave forces are calculated. Numerical results show that the forces exerted on arc-shaped bottom-mounted breakwaters are closely related to water depth, structure configuration, wave parameters.

关 键 词：圆弧型贯底式防波堤 特征函数 速度势 波浪作用力 

分 类 号：O353.2[理学—流体力学]