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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。
In this paper, the interaction between wave and circular arc type bottom breakwaters is studied by using the method of characteristic function expansion and flow field matching, and then the wave force on breakwaters is obtained. It is assumed that the breakwater is rigid, space-fixed, thin-walled and impermeable with a constant water depth. The imaginary cylinder formed by the circular segment of the extended breakwater divides the entire flow field into two regions, inner and outer, Principle, the speed potential with the eigenfunction expansion match, available at any point of the velocity and arc-type breakwater on the wave force. The calculation results show that the force on the breakwater is closely related to the variation of the arc angle, the frequency of the incident wave, the incident angle and water depth.