Wave Attenuation Performance and the Influencing Factors of A LowerArc-Plate Breakwater

作者：LI Xue-yan,WANG Qing,YOU Zai-jin,GUO Wei-jun,ZHANG Jun-bin,ZHAN Chao,ZHANG Zhi-chen,WANG Li-xue,LI Qin

摘要：Comprehensive experimental and numerical studies have been undertaken to investigate wave energy dissipation performance and main influencing factors of a lower arc-plate breakwater. The numerical model, which considers nonlinear interactions between waves and the arc-plate breakwater, has been constructed by using the velocity wave- generating method, the volume of fluid (VOF) method and the finite volume method. The results show that the relative width, relative height and relative submergence of the breakwater are three main influencing factors and have significant influence on wave energy dissipation of the lower arc-plate open breakwater. The transmission coefficient is found to decrease with the increasing relative width, and the minimum transmission coefficient is 0.15 when the relative width is 0.45. The reflection coefficient is found to vary slightly with the relative width, and the maximum reflection coefficient is 0.53 when the relative width is 0.45. The transmission and reflection coefficients are shown to increase with the relative wave height for approximately 85% of the experimental tests when the relative width is 0.19 0.45. The transmission coefficients at relative submergences of 0.04, 0.02 and 0 are clearly shown to be greater than those at relative submergences of 0.02 and 0.04, while the reflection coefficient exhibits the opposite relationship. After the wave interacts with the lower arc-plate breakwater, the wave energy is mainly converted into transmission, reflection and dissipation energies. The wave attenuation performance is clearly weakened for waves with greater heights and longer periods.

发文机构：Coast Institute Dalian Maritime University Institute of Sea-Crossing Engineering College of Environmental Sciences and Engineering

关键词：arc-plateBREAKWATERWAVEATTENUATIONPERFORMANCEinfluencingfactorsVOFmethod

分类号： O17[理学—数学][理学—基础数学]