On the application of a series of submerged breakwaters to coastal protection

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Project title

Code/計畫編號

MOTC-IOT-97-H2DB003

Translated Name/計畫中文名

系列潛堤應用於海岸保護之研究(4/4)

Project Coordinator/計畫主持人

Tai-Wen Hsu

Co-Investigator(s)/共同執行人

許泰文

Website

https://www.grb.gov.tw/search/planDetail?id=1554050

Year

2008

Start date/計畫起

01-02-2008

Expected Completion/計畫迄

01-12-2008

Bugetid/研究經費

800千元

本計畫探討波浪通過各種型式之系列潛堤所發生的布拉格共振效應。理論解析方面以 Hsu 等人 (2003) 所發展的演進型式緩坡方程式 (Evolution Equation for Mild-Slope Equation，EEMSE) 為基礎，並發展波浪數值模式，用以模擬波浪於二維平面上通過各式系列潛堤佈置所產生的布拉格反射現象，進而探討各種影響因子之特性。本年度研究延續過去三年度的成果，針對二維平面上之影響因子進行更為詳盡的模擬討論，此外也將系列潛堤工法可能之經濟成本與各式防禦工法進行比較，歸納出包含經濟效益之現場設計施工初步流程圖，作為日後海岸保育防護工法之參考。最後，以台灣新竹港南海域為例進行各項系列潛堤佈置模擬，並分析評估系列潛堤工法之防禦功效。 In this project, the Bragg reflection for water waves propagating over a series of submerged breakwaters is investigated. A numerical model based on the Evolution Equation of Mild-Slope Equation (EEMSE) developed by Hsu et al. (2003) was used to simulate wave transformation of wave propagation over a series of submerged breakwaters on a planary area. Key parameters influence scattering on a planary beach are intensively studied. In the project, the flow chart of a series of submerged to create a Bragg resonance flow field are proposed based on the results of numerical calculation. Finally, a series of submerged breakwaters are placed on Kung-Nan coast to access their functions of protection based on numerical simulations.

Keyword(s)

系列潛堤
布拉格反射現象
波浪數值模式
a series submerged breakwaters
Bragg reflection
wave mode

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On the application of a series of submerged breakwaters to coastal protection

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