斜坡床面潜堤作用下的波浪传播变形  

Wave propagation over submerged breakwater on a sloping bed

作　　者：蒋昌波[1] 陈杰[1] 肖政[1] 郭杰[1] 

机构地区：[1]长沙理工大学水利学院

出　　处：《长沙理工大学学报（自然科学版）》2008年第3期47-51,57,共6页Journal of Changsha University of Science and Technology:Natural Science

基　　金：国家自然科学基金资助项目(50479015;10202003);教育部新世纪优秀人才支持计划资助项目(NCET-05-0710);湖南省重点学科计划资助项目;长沙理工大学创新团队计划资助项目

摘　　要：以斜坡上梯形潜堤为研究对象,在波浪水槽实验的基础上,分析斜坡上潜堤对规则波和椭圆余弦波传播变形的影响.通过分析潜堤前后波面的变化情况来研究波浪外观形态的改变,利用谱分析来研究波浪内部能量的改变.研究结果显示,由于斜坡床面潜堤的浅化作用,波浪不对称性加剧,波能在潜堤处急剧衰减.Submerged breakwaters have become increasingly popular due to their multiple functions, which are to protect shoreline or harbor and to prevent beach erosion in the coastal zone. Accurate estimation and prediction of wave deformation around a submerged breakwater are obtained. The paper studies upon the trapezoidal-type submerged breakwater on the sloping bed. Flume experiments are carried out to observe and analyze the character- istics of wave propagation over submerged breakwater on the slope. Analyzing the change of wave surface elevation and spectrum, this study investigates the characteristic of wave profile and energy that linear wave or cnoidal wave passing over an submerged breakwater on the slope. The conclusion shows that wave propagation would be influenced and energy would be decreased by shoaling as the depth of water in submerged breakwater decreases.

关 键 词：潜堤 传播变形 斜坡 

分 类 号：TV139.2[水利工程—水力学及河流动力学] P731.22[天文地球—海洋科学]