采用特征函数展开及边界匹配方法对矩形浮体靠近潜堤时流场进行计算分析,获得浮体所受流体作用力.通过改变浮体与潜堤距离以及潜堤高度,获得不同入射波频率下作用力变化规律.浮体与潜堤之间水域透射波与反射波叠加造成自由面剧烈变化,同时，浮体所受作用力在共振频率处发生振荡.对比分析表明，本文提出的计算模型能够用于浮体靠近潜堤时的水动力分析. The flow field of rectangular floating body near submerged breakwater was calculated and analyzed by using eigenfunction expansion and border matching method to derive the fluid force of floating body. The variation of hydrodynamic force under different admission frequency was obtained by changing the distance between floating body and submerged breakwater as well as submerged height. The superposition of transmitted wave and reflected wave in the water area between floating body and submerged breakwater caused free-face radical change. In same time, the hydrodynamic force acting on the floating body produces oscillations at resonant frequency. The comparative analysis shows that the proposed calculation model can be used in hydrodynamic analysis of floating body near submerger breakwater.
