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潜堤后高阶自由谐波的研究

, PP. 165-172

Keywords: 数值波浪水槽,两点法,高倍频自由波,潜堤,完全非线性

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Abstract:

基于高阶边界元方法的完全非线性数值水槽模型模拟潜堤地形上波浪的传播变形,通过与实验值进行比较,考察数学模型的正确性。采用两点法分离得到堤后高倍频自由波来研究入射波参数、水深对堤后高倍频自由波的影响。研究发现:基频波、二阶和三阶自由波幅值分别与入射波波幅成线性、二次和三次函数关系,基频波幅值基本不随波浪周期变化,而二阶和三阶自由波幅值随波浪周期呈二次和三次函数关系增长。在保持入射波参数不变的情况下,堤后基频波的幅值随水深的增大在入射波幅值附近波动,没有明显的变化。

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