臺灣博碩士論文加值系統

本研究主要為探討Cross and Sollitt(1972)所提出的波浪溯升水體位能計算法和Hughes(2004)所提出的波浪動量通率參數計算法對波浪溯升高之計算的精確度之比較，並利用光滑斜堤和階梯斜堤在不同的水深下以試驗分析來比較兩種計算模式間之差異性和準確性。在波浪溯升水體位能計算方面，本研究利用Isaacson(1991)在波浪反射率研究中所提出的三波高法來計算反射率，求其和碎波相似參數與斜堤坡度間之關係，並引用Ahrens et.al.(1981)及Neelamami etc.(2005)所提出之反射率的研究結果加以比較。在相對溯升高的計算方面，經試驗結果和兩種預測法之計算結果比較後可發現，不論是在光滑斜堤或階梯斜堤，波浪動量通率參數計算法皆較波浪溯升水體位能計算法能得到較為準確之預測結果。同時，本研究亦用不同入射波週期配合其他相同試驗條件增加試驗，雖然波浪尖銳度範圍改變，惟分析結果仍具相同趨勢。此外，對於將來各種海堤設計高度之決定，本研究建議以波浪動量通率參數計算法來預測波浪溯升高以決定海堤設計高度較佳。

In this study, the comparison of accuracy of the potential energy method that proposed by Cross and Sollitt(1972) and the wave momentum flux parameter calculate method which proposed by Hughes(2004) to predict the runup wave height was completed. Utilize the smooth dike and stepped dike in experiment to analyse in different water depth and compare to the result of calculation in those two ways. In the potential energy method, the three wave gauge meter analysis method which proposed by Issacson(1991) to estimate the wave reflection coefficient was applied in the calculation and compared with the result of study which proposed by Ahrens et.al.(1981) and Neelamami etc.(2005) respectively. In the calculation of runup wave height’s, we can found, no matter the smooth dike or the stepped dike, the wave momentum flux parameter calculating method have more accurate predicted result than the potential energy method. At the same time, this research also use different incident wave period and the same experimental conditions to test again, although the wave steepness was changed, but the analysis result is still the same. In addition, the design work of sea walls in the future can use this model to predict the runup wave height by wave momentum flux parameter calculate method on the decision of the height of sea walls is much better.

摘要……………………………………………………………Ⅰ
英文摘要………………………………………… …………Ⅱ
目錄……………………………………………………………Ⅲ
圖目錄…………………………………………………………Ⅵ
表目錄…………………………………………………………IX
符號說明………………………………………………………X
第一章 緒論…………………………………………………1
1-1 研究背景及目的………………………………..…….1
1-2 研究方法……………………………..……………….2
1-3 本文組織……………………………..……………….2
第二章 文獻回顧………………………..…………… …….4
第三章 理論計算模式………………………………… …….7
3-1 波浪溯升水體位能計算法…………………………… 7
3-2 波浪動量通率參數計算法………………………………8
第四章 試驗研究…………………………………………….…11
4-1 試驗佈置…………………………………………………11
4-2 試驗條件…………………………………………………11
4-3 試驗設備及率定…………………………………………12
4-4 試驗步驟…………………………………………………13
4-5 試驗資料分析……………………………………………14
第五章 結果分析與討論……………………………………..15
5-1光滑海堤…………………………………………………15
5-1-1波浪反射率和碎波相似參數之關係………………15
5-1-2波浪反射率和斜堤坡度之關係……………………16
5-1-3能量損失係數對波浪溯升高之影響………………16
5-1-4波浪相對溯升高與斜堤坡度之關係………………17
5-1-5溯升水體位能計算法和動量通率參數計算法之比較...18
5-2階梯海堤……………………………………………………..19
5-2-1波浪反射率和碎波參數間之關係………………………..19
5-2-2波浪反射率和斜堤坡度之關係………………………….20
5-2-3能量損失係數對波浪溯升高影響之探討……………….20
5-2-4波浪相對溯升高與斜堤坡度之關係…………………….21
5-2-5溯升水體位能計算法和動量通率參數計算法之比較.21
5-3 不同造波週期之波浪溯升關係比較…………………..22
5-3-1反射率和碎波相似參數關係比較……………………….22
5-3-2波浪溯升高測與實測結果比較………………………...23
第六章 結論與建議……………………………………………24
6-1 結論……………………………………………………………24
6-2 建議……………………………………………………………25
參考文獻…………………………………………………………..…26
附圖…………………………………………………………..……….28

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