新型直立式透空堤消浪性能数值研究  

Numerical study on wave dissipation performance of new type vertical permeable breakwater

作　　者：杜沛霖 孙昭晨[1] 梁书秀[1] DU Peilin;SUN Zhaochen;LIANG Shuxiu(State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China)

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116024

出　　处：《海洋工程》2021年第1期12-20,共9页The Ocean Engineering

基　　金：国家重点研发计划(2019YFC1407702,2019YFC1407705)。

摘　　要：为使防波堤同时具有良好的掩护效果和水体交换能力,提出了两种带有透浪通道的新型直立式防波堤。基于Fluent求解器建立了三维数值波浪水槽,通过与试验结果对比,验证了该数值水槽求解波浪与透空堤作用具有较高的精度。对两种防波堤在规则波作用下的透浪特性进行了研究,结果表明:透射系数Kt与透空率呈正线性相关,且可通过调整透浪通道间距,使相同透空率下Kt降低20%~30%。对同一结构,Kt随相对波长的增大而显著增大,但受相对波高的影响较小。在透空率大于0.16后,异型沉箱防波堤的消浪性能明显优于错位沉箱。基于数值计算结果,给出了以上两种透空堤波浪透射系数的经验公式。In order to make breakwater have good shield effect and water exchange ability,two new types of vertical breakwaters with wave transmission channels were proposed.Based on Fluent solver,a 3-D numerical wave flume was established.By comparing with experimental results,accuracy of the numerical flume in solving the problem of wave action on breakwater was verified.Wave transmission characteristics under regular waves were studied and the results show that transmission coefficient Kt is linearly correlated with the permeability,and can be reduced by 20%~30%by adjusting the spacing of wave channel.For the same structure,Kt increases obviously with the increase of relative wave length,but less affected by relative wave height.The wave dissipation performance of specially shaped caisson is better than that of dislocation caisson if permeability is greater than 0.16.Based on the numerical results,empirical formulas of wave transmission coefficient for the permeable breakwaters were given.

关 键 词：透空式防波堤 透浪通道 三维数值水槽 消浪性能 透空率 透射系数 

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