同济大学学报（自然科学版）2024，Vol.52Issue(8)：1227-1237,11.DOI:10.11908/j.issn.0253-374x.22373
短周期规则波浪在透水鱼礁型潜堤群上的传播特性
Propagation Characteristics of Short Period Regular Wave over Perforated Reef-type Submerged Breakwater Group
摘要
Abstract
Based on flume experiment and numerical simulation,wave transformation and wave-induced current characteristics over a series of periodic distribution of single row perforated reef-type breakwater group with different disposal spaces were studied under short period regular incident wave condition.Wave surface and wave height of reef-type breakwaters without disposal space were measured in a short period incident wave.Wave height is significantly reduced due to the wave energy dissipation caused by wave shoaling effect,but the wave still maintains a quasi-symmetrical sinusoidal wave and propagates for-ward due to the large submergence on the breakwaters.Further,a non-reflected numerical wave model was developed using smoothed particle hydrodynamic(SPH)method and verified by experimental data,which was served to simulate the regular wave propagation over reef-type breakwaters with disposal spacing ratio of 0.5～3.0.The results show that reflection coefficients of all scenarios are above 0.75,indicating that disposal spacing between reef-type breakwaters has a large impact on wave reflection.Transmission coefficients generally decrease with disposal spacing between reef-type breakwaters increasing.It is noticeable that when the spacing ratio is 2.5,the wave reaches the same frequency as breakwaters,triggering the Bragg resonance reflection effect and resulting in the wave height on breakwater-top rising sharply,which causes almost the strongest wave reflection and transmission,and the largest upwelling zone with strong turbulence on the first seaward breakwater.关键词
鱼礁型潜堤/光滑粒子流体动力学/布拉格反射/波生流Key words
reef-type breakwater/smoothed particle hydrodynamic/bragg resonance/wave-induced current分类
建筑与水利引用本文复制引用
郑宇华,匡翠萍,韩雪健,马悦..短周期规则波浪在透水鱼礁型潜堤群上的传播特性[J].同济大学学报（自然科学版）,2024,52(8):1227-1237,11.基金项目
国家重点研发计划(2022YFC3106205) （2022YFC3106205）
国家自然科学基金(41976159,41776098) （41976159,41776098）
