带横隔板开孔沉箱所受波浪力的研究

研究了斜向波与无限多开孔沉箱的相互作用。依照结构物的几何形状,整个流域被分成无限多个子域,在每个子域内应用特征函数展开法求解速度势。对于沉箱内的波浪运动,引入相位差概念;同时,在构造反射波模型时,考虑了结构物的几何形状影响。进行了数值试验,分析了开孔沉箱水平波浪力及横隔板受力特点,详细讨论了波浪入射频率、入射角度、相对消浪室宽度及开孔影响系数对开孔沉箱波浪力的影响。

Wave Forces on Perforated Caissons with Transverse Walls

An analytical solution based on eigenfunction and matching method is developed for the interaction of oblique waves with infinite number of perforated caissons.According to the geometric shape of structures,the whole fluid domain is divided into infinite sub-domains firstly,and eigenfunction expansion is used for representing the velocity potential in each domain.A phase relation is utilized for analyzing the wave motion in each caisson,and the geometric characteristics of the structure is considered in setting up the mathematical model of reflected waves.A numerical experiment has been carried out to examine the horizontal forces acting on the caissons and wave forces acting on the traverse walls.The effects of incident wave frequency,incident wave angle,relative wave chamber width and porous influence coefficient on wave forces are discussed particularly.