Current Effects on Nonlinear Wave Scattering by a Submerged Plate
Current Effects on Nonlinear Wave Scattering by a Submerged Plate
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水下板对非线性波散射的电流影响
DOI：
10.1061/(asce)ww.1943-5460.0000256
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发表时间：
2014-09
期刊：
影响因子：
--
通讯作者：
Li-fen Chen
中科院分区：
文献类型：
--
作者：
Bin Teng;Bin Teng;Li-fen Chen;Li-fen Chen
基于时域高阶边界元法，建立了二维完全非线性数值波浪水槽，研究了均匀流作用下规则波与水下平板的非线性相互作用。两点法用于区分界限（即，由自由波非线性地强迫并耦合到自由波）和从结构向上游和下游传播的自由谐波。所提出的模型进行了验证，对实验和其他数值数据的波流相互作用，没有障碍物和非线性波散射的淹没板在没有电流。一阶分析表明反射系数在以下电流中增加（即，在与入射波相同方向上的电流）并在相反方向上减小（即，与入射波方向相反的电流）。此外，发生最大反射的板长度对电流不敏感。...
AbstractOn the basis of a time-domain higher-order boundary element method, a two-dimensional fully nonlinear numerical wave flume is developed to investigate the nonlinear interactions between a regular wave and a submerged horizontal plate in the presence of uniform currents. A two-point method is used to discriminate bound (i.e., nonlinearly forced by and coupled to free waves) and free harmonic waves propagating upstream and downstream from the structure. The proposed model is verified against experimental and other numerical data for wave-current interaction without obstacles and nonlinear wave scattering by a submerged plate in the absence of currents. A first-order analysis shows that the reflection coefficient increases in the following current (i.e., current in the same direction as the incident wave) and decreases in the opposing current (i.e., current in the opposite direction to the incident wave). Moreover, the plate length for the maximum reflection to occur is not sensitive to the current. ...
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