双浮箱-双水平板浮式防波堤的数值模拟  

Numerical simulation of twin pontoon-twin horizontal plate floating breakwater

作　　者：王铁涛[1] 刘祚秋[1] 

机构地区：[1]中山大学工学院应用力学与工程学系,广东广州510006

出　　处：《水运工程》2016年第3期46-50,共5页Port & Waterway Engineering

摘　　要：针对新型双浮箱-双水平板防波堤,应用Ansys Workbench软件和AQWA Graphical Supervisor（AGS）图像后处理软件,建立三维数值模型,研究浮箱的相对吃水深度、浮箱的相对间距和相对板间距对消波效果的影响以及自身稳定性分析。结果表明：增大浮箱的吃水深度和相对板间距,可以减小防波堤的透射系数;取浮箱相对间距为0.22~0.33时,有更好的消波效果;双浮箱-双水平板浮式防波堤的固有周期大约为5 s,实际应用中应避免固有周期与波浪周期相近。研究结果可以为该型防波堤的设计提供理论基础。The numerical simulation model of win pontoon-twin horizontal plate floating breakwater is established by hydrodynamics simulation software ANSYSWorkbench and AQWA Graphical Supervisor. The investigation of the floating breakwater including the underwater penetration and the spacing of two pontoons and two plates shows that with the increase of the underwater penetration and the spacing of two plates the transmission coefficient decreases. When the relative spacing of two pontoons varies from 0. 22 to 0. 33, the transmission coefficients turn smaller. The natural period of the twin pontoon-twin horizontal plate floating breakwater is about4. 8 ~ 5. 3 s. In the design,we should pay attention to avoid producing resonance when the natural period of floating breakwater and the wave period are close. The research will provide a theoretical basis for the breakwater design.

关 键 词：浮式防波堤 数值模拟 频域分析 透射系数 幅值响应算子 

分 类 号：U656.24[交通运输工程—港口、海岸及近海工程]