导流堤影响下码头后方及下方流动特性数值模拟研究  

Numerical simulation study on flow characteristics behind and beneath a wharf under the influence of diversion dikes

作　　者：旷敏 姚宇[1,2] 许从昊 陈龙 KUANG Min;YAO Yu;XU Conghao;CHEN Long(School of Hydraulic and Environmental 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)

机构地区：[1]长沙理工大学水利与环境工程学院,湖南长沙410114 [2]水沙科学与水灾害防治湖南省重点实验室,湖南长沙410114

出　　处：《海洋工程》2025年第2期124-132,共9页The Ocean Engineering

基　　金：国家重点研发计划项目(2021YFB2601104);湖南省科技创新计划项目(2022RC3043);湖南省研究生科研创新项目(CX20230886)。

摘　　要：基于Navier-Stokes方程结合标准的k-ωSST湍流模型建立三维数值模型,对导流堤影响下中国东南沿海某码头后方及下方水域流动特性进行分析,研究了在不同堤长和角度组合工况下码头后方及下方水平流场、水平涡量、湍动能和沿岸方向海床剪切应力分布规律。结果表明:随着堤长增大,码头后方有效导流区域的面积和沿岸方向海床剪切应力增强的范围先增大后减小,在堤身长度等于码头后方水域宽度一半时达到最大,涡量和湍动能增强的区域面积随之增大;随着夹角增大,码头后方有效导流区域的面积和沿岸方向海床剪切应力增强的范围逐渐减小,涡量和湍动能增强的区域面积先增大后减小,在堤身与岸线夹角等于90°时达到最大。A three-dimensional numerical model was established based on the Navier-Stokes equations combined with the standard k-ωSST turbulence model to analyze the flow characteristics behind and beneath a wharf in southeastern coastal China under the influence of diversion dikes.The study investigated the distribution of horizontal flow field,horizontal vorticity,turbulent kinetic energy,and alongshore seabed shear stress behind and beneath the wharf under different combinations of dike lengths and angles.The results indicate that as the dike length increases,the area of the effective diversion region behind the wharf and the extent of enhanced alongshore seabed shear stress initially increase and then decrease,reaching a maximum when the dike length is half the width of the water area behind the wharf.The area of enhanced vorticity and turbulent kinetic energy also increases accordingly.With an increase in the angle,the area of the effective diversion region behind the wharf and the extent of enhanced alongshore seabed shear stress gradually decrease,while the area of enhanced vorticity and turbulent kinetic energy first increases and then decreases,reaching a maximum when the angle between the dike and the shoreline is 90°.

关 键 词：导流堤 高桩码头 NAVIER-STOKES方程 流动特性 

分 类 号：P752[天文地球—海洋科学]