Transmission of oblique incident waves by a submerged horizontal porous plate
Transmission of oblique incident waves by a submerged horizontal porous plate
复制标题
DOI：
10.1016/j.oceaneng.2012.12.044
复制
发表时间：
2013-03
影响因子：
5
通讯作者：
I. Cho;Moo-Hyun Kim
中科院分区：
文献类型：
--
作者：
I. Cho;Moo-Hyun Kim
在二维线性势理论的背景下研究了斜单色入射波与水下水平多孔板的相互作用。应用匹配特征函数展开方法来获得解析解。 Molin 和 Nielsen (2004) 以及 Liu 和 Li (2011) 提出的当前公式与使用复杂色散关系的独立解进行了比较，并证明它们是相同的。然而，前一种方法可以更直接地扩展到多层水平多孔板的情况。此外，目前的预测还与济州国立大学二维波浪池中进行的一系列实验进行了比较。利用作者获得的板孔隙率和孔隙参数之间的经验关系（Cho和Kim，2008），测量的反射和透射系数合理地遵循预测值的趋势。通过选择最佳设计参数，如孔隙率、浸没深度和板宽度，可以显着提高所提出的水下水平多孔防波堤的性能。最佳案例是通过系统参数研究获得的，这说明了目前开发的分析解决方案的有用性。
The interaction of oblique monochromatic incident waves with a submerged horizontal porous plate has been investigated in the context of two-dimensional linear potential theory. The matched eigenfunction expansion method is applied to obtain the analytic solution. The present formulations, suggested by Molin and Nielsen (2004) and Liu and Li (2011), are compared with the independent solutions using complex dispersion relations and they are proved to be identical. The former approach, however, may be more straightforwardly extended to the case of multi-layer horizontal porous plates. Also, the present predictions are compared with a series of experiments conducted in a two-dimensional wave tank at Jeju National University. By using the empirical relationship between plate porosity and porous parameter obtained by authors (Cho and Kim, 2008), the measured reflection and transmission coefficients reasonably follow the trend of predicted values. The performance of the proposed submerged horizontal porous breakwaters can be significantly enhanced by selecting optimal design parameters, such as porosity, submergence depth, and plate width. The optimal cases are obtained through a systematic parametric study, which illustrates the usefulness of the presently developed analytic solutions.