摘要
利用三维动压模型NHWAVE模拟了不越浪斜坡堤的透浪试验,并使用物理模型数据进行了验证。通过厄塞尔指数和波陡研究波浪非线性对斜坡堤透浪特性的影响,并采用相对长度(相对堤宽B/L)而不是绝对长度(B)来表示静水面处的堤身宽度。在此基础上计算得到新的透浪系数K L,同时讨论了堤后透浪系数与波浪非线性等因素之间的关系。结果表明,波浪非线性对透浪系数有着非常显著的影响。最后根据试验结果拟合出斜坡堤透浪系数的经验公式,为防波堤工程建设提供一定的参考依据。
A three-dimensional dynamic pressure model NHWAVE was used to simulate the wave transmission experiment of a slope breakwater without overtopping,and validated by the experiment data.The effects of wave non-linearity on the wave transmission characteristics of the rubble mound breakwater were investigated using the Ursell number and wave steepness,and relative length(relative breakwater width B/L)was insteaded of absolute length(B)to indicate the width of the breakwater at the calm water surface.On this basis,a new wave permeability coefficient K L was calculated,and the relationship between the wave transmission coefficient and wave non-linearity was discussed.It is suggested that the non-linearity character of waves has a strong influence on the wave transmission coefficient.Finally,based on the results of numerical modeling,an empirical formula of wave transmission coefficient was developed,which provided the reference for breakwater construction and scientific research.
作者
丁坤
冯曦
马钢峰
冯卫兵
DING Kun;FENG Xi;MA Gang-feng;FENG Wei-bing(College of Harbor,Coastal and Offshore Engineering,Hohai University,Nanjing 210098,China;Department of Civil and Environmental Engineering,Old Dominion University,Norfolk,VA,USA)
出处
《水运工程》
北大核心
2020年第4期1-8,共8页
Port & Waterway Engineering
基金
国家自然科学基金项目(51709091)
江苏省自然科学基金项目(BK20170874)
中央高校基金项目(2017B005)。
关键词
透浪系数
数学模型
斜坡堤
波浪非线性
transmission coefficient
numerical model
rubble mound breakwater
wave non-linearity
