基于粘性流模型的筒型基础防波堤波浪力数值分析  

Numerical analysis of wave force on cylindrical foundation breakwater based on viscous flow model

作　　者：王元战[1] 龚薇[1] 及春宁[1] 李元音[2] 谢善文[2] 

机构地区：[1]天津大学建筑工程学院天津市港口与海洋工程重点实验室,天津300072 [2]中交第一航务工程勘察设计院有限公司,天津310222

出　　处：《海洋工程》2008年第3期38-43,77,共7页The Ocean Engineering

基　　金：国家自然科学基金资助项目(50779043);西部交通建设科技资助项目(200632800003-06)

摘　　要：筒型基础防波堤是一种新型港口海岸工程结构,其基础上部是由连续排列的圆筒构成的直立防浪墙。采用粘性流数值模型,研究连续圆筒防波堤上波浪力竖向分布、水平(沿圆筒环向)分布和波浪力合力特性,并对粘性流数值模型计算的平面直墙波浪力与海港水文规范方法计算结果;粘性流数值模型计算的连续圆筒墙面波浪力与平面直墙波浪力;无限长连续圆筒墙面波浪力与有限长连续圆筒墙面波浪力进行比较分析。针对所选工程算例,建议按《海港水文规范》中平面直墙波浪力计算方法确定连续圆筒防波堤上的波浪力时,波峰时考虑0.90左右的折减系数,波谷时考虑0.95左右的折减系数。Cylindrical foundation breakwater is a new type of coastal structure, with its wave retaining wall composed of successive cylinders. The vertical distribution, the horizontal （along radial direction of the cylinders） distribution of the wave pressure and the total wave force on a cylindrical foundation breakwater are investigated by using the numerical model of viscous flow. The comparisons of the wave forces on a flat wall calculated by the criterion method and the numerical method, the wave forces on a flat wall and on an infinite successive cylinder wall calculated by numerical method, and the wave forces on a finite successive cylinder wall and on an infinite successive cylinder wall calculated by numerical method are performed. It is suggested that the total wave force on an infinite successive cylinder wall can be obtained by the total wave force on a flat wall being multiplied by reduction coefficient. The reduction coefficient is 0.9 for wave crest case and 0.95 for wave trough case.

关 键 词：筒型基础防波堤 波浪力 粘性流数值模型 折减系数 

分 类 号：TV139.2[水利工程—水力学及河流动力学] U656[交通运输工程—港口、海岸及近海工程]