首页|带翼排桩式防波堤水动力特性研究

带翼排桩式防波堤水动力特性研究

Research on hydrodynamic characteristics of winged pile-type breakwaters

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带翼排桩式防波堤能够有效沟通港池内外水体、维护水域环境,是一种环境友好型防波堤结构,在海岸工程领域有广阔的应用前景.采用模型试验与数值模拟方法,开展带翼排桩式防波堤的水动力特性研究.通过实验室水槽模型试验,分析翼板宽度Bw与翼板入水深度Hw对防波堤透反射系数及耗散系数的影响,同时基于大涡模拟(LES)建立数值波浪水槽,讨论规则波与防波堤相互作用过程中的桩周涡流、射流场演化过程.结果表明,不同的翼板宽度、入水深度设置会对防波堤透反射系数产生影响,且不同波长的规则波受翼板影响会呈现出不同的耗散结果;带翼排桩能够有效扰乱规则波的流场,形成不同形态的涡流,耗散波浪能量;当翼板入水深度较大时,翼下射流沿桩底水平发展,且强度大、控制距离远,该射流或成为桩底附近泥沙运动的重要动力.
The winged pile-type breakwater is effective in facilitating the exchange of water between the inside and outside of the harbor basin,maintaining the aquatic environment,and is an environmentally friendly breakwater structure with broad application prospects in the field of coastal engineering.This study investigates the hydrodynamic characteristics of the winged pile-type breakwater using model testing and numerical simulation methods.Laboratory flume model tests were conducted to analyze the impact of the wing width Bw and the depth of wing immersion Hw on the breakwater's transmission coefficient,reflection coefficient and dissipation coefficient.A numerical wave flume was also established based on large eddy simulation(LES)to discuss the evolution of the vortex flow around the pile and the jet field during the interaction process of regular waves and the breakwater.The results show that the settings of different wing widths and immersion depths have an impact on the breakwater's transmission and reflection coefficient,with regular waves of different wavelengths exhibiting varying dissipation outcomes when influenced by the wings.Winged piles can effectively disrupt the flow field of regular waves,forming different forms of vortices to dissipate wave energy.When the wing immersion depth is significant,the underwing jet develops horizontally along the bottom of the pile with great intensity and a long control distance,and this jet may become an important dynamic force for the movement of sediment near the pile bottom.

pile-type breakwaterwinged piletransmission and reflection coefficientvortex and jetregular wave

缪银琦、赵西增、殷铭简、刘必劲、夏志盛

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浙江大学 海洋学院,浙江 舟山 316021

上海河口海岸科学研究中心,上海 201201

浙江大学 海南研究院,海南 三亚 572025

山东能源集团新能源有限公司,山东 济南 250014

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排桩式防波堤 带翼排桩 透反射系数 涡流与射流 规则波

国家自然科学基金资助项目海南省自然科学基金资助项目中央引导地方科技发展资金项目舟山市重大产业科技攻关项目浙江省联合基金重点项目

51979245422MS0902023ZY10212023C03004LHZ22E090002

2024

10.16483/j.issn.1005-9865.2024.04.009

海洋工程
中国海洋学会

海洋工程

CSTPCD北大核心
影响因子：0.552
ISSN：1005-9865
年,卷(期)：2024.42(4)
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