波浪通過透水薄板組合結構物消波特性與波力之研究

A Study of Wave Scatters and Wave Forces of a Permeable Thin Barrier

莊世璿(Shih-Hsuan Chuang) ； 岳景雲(Ching-Yun Yueh)

《海洋工程學刊》 7卷1期 (2007/06) Pp. 21-46

https://doi.org/10.6266/JCOE.2007.0701.02

摘要

本文利用過去學者研究發現，透水薄板結構物具有消波的效果，因此將透水薄板加以組合，形成三層型式（有透過率）或開孔胸牆型式（無透過率）之消波結構物。本文考慮的是線性規則波波浪正向入射含透水薄板之結構物，並假設孔隙流速度滿足達西定律，主要是以複合邊界元素法(composite boundary element method, CBEM)來計算波浪通過各種不同配置透水薄板結構物的波力與消波效果。並交叉比較波力與消波效果，以期找出消波效果佳且波力小之配置與範圍。

關鍵字

透水薄板 ； 波力 ； 複合邊界元素法

並列摘要

In accordance with the fact that the porous thin plate can dissipate wave energies, three porous plates were used to construct a permeable breakwater or a perforated-parapet breakwater in numerical simulations to investigate their wave scatter effects and the wave forces on the structure. Under the assumptions of linear wave theory, and the Darcy's law in porous media, a CBEM model was created to calculate the wave forces acting on the structure, and the wave dissipations around it. The optimal spans of the plate were evaluated.

並列關鍵字

permeable thin barrier ； wave force ； composite boundary element method