摘要
基于开源程序REEF3D,通过建立高精度二维数值波浪水槽,系统研究了聚焦波浪在浅堤上传播变形的规律,着重分析了聚焦波浪通过浅堤的水动力过程及能量变化规律,讨论了不同波浪要素对聚焦波浪传播特性的影响。除此之外,还考虑了双浅堤布置对聚焦波浪传播变形的影响。研究结果表明:极端波浪通过浅堤时,堤顶水深越小,波浪主频能量衰减越显著。在给定堤顶水深条件下,聚焦点与浅堤的相对位置对聚焦波浪能量的衰减影响较小。在双浅堤布置条件下,随着浅堤间距的增加,上下游浅堤的相互影响逐渐减弱,高频段的波浪能量也随之减小。
Based on the open source solver REEF3D,a high-resolution numerical wave tank was established to investigate the propagation of focused wave over a submerged breakwater.Effects of prominent wave parameters on the hydrodynamic process and wave energy attenuation of focused wave over submerged breakwater were analysed in detail.In addition,submerged breakwaters in tandem arrangement was also considered.It is found that frequency-domain energy can be attenuated significantly with the decrease of the still water depth at the top of the breakwater when the extreme wave goes through the submerged breakwater.The spacing distance between focus location and breakwater has very limited influences on wave energy attenuation.When the breakwaters are considered in tandem arrangement,as spacing distance increases,interactions between upstream and downstream breakwaters are weakened,and the portion of wave energy in high frequency is also reduced.
作者
易振宇
蒋昌波
屈科
邓斌
陈杰
YI Zhenyu;JIANG Changbo;QU Ke;DENG Bin;CHEN Jie(School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha 410114, China;Key Laboratory of Water-Sediment Sciences and Water Disaster Prevention of Hunan Province, Changsha 410114, China;Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha 410114, China)
出处
《海洋工程》
CSCD
北大核心
2021年第1期32-42,共11页
The Ocean Engineering
基金
国家自然科学基金重点项目(51839002)
国家自然科学基金青年项目(51809021)。
关键词
聚焦波浪
浅堤
REEF3D
波谱
传播变形
透射波高
波浪能量
focused wave
submerged breakwater
REEF3D
wave spectrums
propagation
transmission wave height
wave energy
