潜堤坡度对波浪传播变形的影响  

Influence of slope of submerged breakwater on wave propagation and deformation

作　　者：毛鸿飞 韩龙 赫岩莉 周忠兵 杨媛婷 MAO Hongfei;HAN Long;HE Yanli;ZHOU Zhongbing;YANG Yuanting(College of Ocean Engineering and Energy,Guangdong Ocean University,Zhanjiang 524088,China;State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China;Guangdong Provincial Key Laboratory of Intelligent Equipment for South China Sea Marine Ranching,Zhanjiang 524088,China)

机构地区：[1]广东海洋大学海洋工程与能源学院,广东湛江524088 [2]大连理工大学海岸和近海国家重点实验室,辽宁大连116024 [3]广东省南海海洋牧场智能装备重点实验室,广东湛江524088

出　　处：《河海大学学报（自然科学版）》2024年第5期76-84,共9页Journal of Hohai University(Natural Sciences)

基　　金：国家自然科学基金青年科学基金项目(52001071);广东省基础与应用基础研究基金-自然科学基金面上项目(2023A1515010890,2024A1515012321);广东省基础与应用基础研究基金-海上风电联合基金面上项目(2022A1515240039);湛江市海洋青年人才创新项目(2021E05010)。

摘　　要：应用OpenFOAM开源计算平台,基于黏性流理论和有限体积法建立数值水槽模型,系统验证了强非线性波浪的传播及潜堤地形上波浪传播变形的计算准确性和精度,并分析了入射波幅、潜堤坡度等因素对波浪传播特性的影响规律。结果表明:数值水槽模型可较好地模拟强非线性波浪的生成和传播以及波浪经潜堤传播的变形过程;小波陡工况下水面波形具有较好的周期性规律,不同坡度之间存在相位差,具体表现为坡度越平坦,相位越滞后;强非线性波浪条件下,由于波浪破碎,不同坡度波面形态呈现强非线性,水面波形有较大差别;入射波陡由0.53%增大到3.00%的过程中,无量纲化波面的峰谷差均值逐渐减小,体现出潜堤反射作用随着波陡的增大而逐渐增强。In this study,a numerical flume model is established based on the viscous fluid theory and the finite volume method using OpenFOAM,one open-source computing platform,to systematically verify the accuracy and precision of calculation of strong nonlinear wave propagation and wave propagation deformation on submerged embankment topography.The influence law of incident wave amplitude and the slope of submerged breakwater on the wave propagation characteristics is explored.The results show that the numerical flume model accurately simulates the strong nonlinear wave propagation,and the wave surface changes as the wave is spreading through the submerged breakwater.In the case of small wave steepness,the surface wave shape exhibits a good periodicity,and there are phase differences between different slopes,which indicate that if the slope is flatter,the phase is more lagged.In the case of large wave steepness,the wave shapes of different slopes show strongly nonlinear and there are great differences in surface wave shapes due to wave breaking.As wave steepness increases from 0.53% to 3.00%,the mean value of the dimensionless peak-to-valley difference of the wave surface decreases,which indicate that a gradual enhancement of the reflection effect of the submerged breakwater as the wave steepness increases.

关 键 词：潜堤坡度 波浪传播 非线性波浪 黏性流理论 数值水槽模型 

分 类 号：TV139.2[水利工程—水力学及河流动力学]