中长周期波浪作用下多层板浮式防波堤尺寸特征对消浪性能的影响  

Influence of size characteristics of multi-layer floating breakwater on wave dissipation performance under medium and long period waves

作　　者：王曦巍 WANG Xi-wei(Tianjin International Marine Engineering Co.,Ltd.,Tianjin 300450,China)

机构地区：[1]中交(天津)疏浚工程有限公司,天津300450

出　　处：《水运工程》2022年第S02期89-94,共6页Port & Waterway Engineering

摘　　要：多层板浮式防波堤具有质量轻、结构简单、造价低、便于移动、可重复使用、不受水深和地质条件限制等优点。毛里塔尼亚某疏浚工程施工区涌浪大、周期长,严重影响绞吸船的正常施工。为解决中长周期波浪干扰的问题,降低工程预算,基于开源流体力学平台OpenFOAM,采用雷诺平均N-S(RANS)方程和剪切应力输运(SST)k-ω紊流模型对流场进行模拟,分析板长、板间距、板厚等尺寸特征和不同波浪周期对多层板浮式防波堤性能的影响,确定影响多层板浮式防波堤消浪性能的主要尺寸参数。结果表明,提高多层板浮式防波堤消浪性能最直接有效的方法是增加板长;板间距变化对消浪性能的影响并不完全确定,需要依据实际需求进行选择。The multi-layer floating breakwater has the advantages of light mass,simple structure,low cost,easy to move,reusable,and not limited by water depth and geological conditions.The construction area of a dredging project in Mauritania has large swells and long period waves,which affect the dredging operation of cutter suction dredger.To solve the problem of medium and long period waves interference and reduce project budget,we use Reynolds average(RANS)equation and shear stress transport(SST)k-ωturbulence model to simulate the flow distribution based on the open source fluid mechanics platform OpenFOAM,analyze the dimensional characteristics of the multi-layer floating breakwater including plate length,plate spacing,plate thickness and the influence of different wave periods on the performance of multi-layer floating breakwater,and determine main dimensional parameters affecting wave dissipation performance of multi-layer floating breakwater.The results show that the most direct and effective way to improve the wave elimination performance of the multi-layer floating breakwater is to increase the length of board.The effect of the spacing change of board on the wave elimination performance is not completely determined,and it needs to be selected according to the actual needs.

关 键 词：多层板浮式防波堤 数值模拟 尺寸优化 透射系数 

分 类 号：U616[交通运输工程—船舶及航道工程]