水生态学杂志2025，Vol.46Issue(5)：269-280,12.DOI:10.15928/j.1674-3075.202505300004
波流耦合作用下鱼礁型潜堤的波浪变形及湍流特性研究
Wave Transformation and Turbulence Induced by Perforated Reef-type Breakwater with Wave-Current Coupling
摘要
Abstract
In this study,a reef-type breakwater(RB)in the beach nourishment project in Beidaihe was studied,and we explored wave motion and turbulence in the vicinity of the breakwater under the effect of tidal currents.A wave-current coupling model was developed based on the Volume of Fluid(VOF)meth-od and Reynolds-Averaged Navier-Stokes(RANS)equations,and the perforated geometry of the struc-ture was accurately reconstructed using unstructured grids.Numerical simulations were then conducted to investigate the hydrodynamics of the RB under regular wave propagation without current,with co-flow and counter flow.Results show that the wave height in front of the breakwater under co-flow(v=0.2 m/s)decreased by approximately 10％compared with the pure wave condition(v=0)without current,and the wavelength increased by 5％-10％,resulting in a forward shift of 0.1-0.2 in the wave period.In contrast,counter-flow(v=-0.2 m/s)increased the wave height by about 13％,shortened the wavelength,and caused a phase delay.Under co-flow conditions,wave nonlinearity weakened,the breaking point moved landward,and the reflection coefficient increased to 0.786,over 20％higher than that under pure waves.The enhanced wave reflection promoted energy exchange between waves and currents,driving the devel-opment of near-field vortices and increasing vorticity.Conversely,counter flow intensified wave nonlin-earity,shifted the breaking point seaward,and induced plunging wave breaking in front of the structure.In this case,the dissipation coefficient reached 0.646,and the structure primarily dissipated wave energy by enhancing local turbulence.The turbulent flow within the RB compartment flowed out through the open-ings of the stoss face and played the role of absorbing wave by current.In a word,reef-type breakwaters,under the combined action of wave-current interactions,effectively regulate wave breaking and vortex evolution,enhance local water mixing and energy dissipation capacity,and demonstrate robust hydrody-namic adaptability and ecological protective potential.In conclusion,this study reveals the hydrodynamic response of RBs under different wave-current conditions and provides theoretical support for optimizing the design of permeable coastal structures and improving the stability of nearshore ecosystems.关键词
鱼礁型潜堤/湍流/波浪/波流耦合/涡量Key words
reef-type breakwater/turbulence/wave/wave-current coupling/vorticity分类
建筑与水利引用本文复制引用
郑宇华,周鑫,匡翠萍,蔡家新,唐泓淏..波流耦合作用下鱼礁型潜堤的波浪变形及湍流特性研究[J].水生态学杂志,2025,46(5):269-280,12.基金项目
国家重点研发计划(2022YFC3106205) （2022YFC3106205）
浙江省"尖兵""领雁"研发攻关计划(2023C03188). （2023C03188）
