Water wave scattering by impermeable and perforated plates
Water wave scattering by impermeable and perforated plates
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DOI：
10.1063/5.0051355
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发表时间：
2021-07-01
影响因子：
4.6
通讯作者：
Greaves, Deborah
中科院分区：
文献类型：
--
作者：
Liang, Hui;Zheng, Siming;Greaves, Deborah
在海上可再生能源领域，防渗板被用作水下透镜来放大波幅，而穿孔板可以利用波能作为动力输出装置。在线性势流理论的框架下，研究了不透水和开孔水平板的水波散射，同时考虑了圆板和椭圆板。建立了超奇异积分方程组来模拟水波与小厚度板的相互作用。对于以波放大为中心的不透水板的散射，可以利用多个板的干涉效应来实现较大的波放大。对于用于利用波能的穿孔板，如果展开线与长轴重合，且入射波沿短轴传播，则部署椭圆板阵列是有希望的。这项研究为通过水平板利用水波能量提供了洞察力。
In the field of offshore renewable energy, impermeable plates are used as underwater lenses to amplify the wave amplitude, and perforated plates can harness wave energy as a power takeoff device. Within the framework of the linear potential-flow theory, the water wave scattering by impermeable and perforated horizontal plates is investigated in the present study, and both circular and elliptical plates are considered. The hypersingular integral equation is constructed to model the interaction between water waves and plates of small thickness. For wave scattering by impermeable plates with the focus on wave amplification, wave interference effects due to multiple plates can be utilized to achieve large wave amplification. For perforated plates used for harnessing wave energy, deploying an array of elliptical plates is promising if the deployment line coincides with the major axis and the incident wave propagates along the minor axis. The study gives insight into harnessing energy from water waves by horizontal plates.