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研究生:吳佳叡
研究生(外文):Chia-Jui Wu
論文名稱:方向造波之三維邊界元素法計算
論文名稱(外文):Three-Dimensional Boundary Element Calculation of Directional Wave Generation
指導教授:李兆芳李兆芳引用關係
指導教授(外文):Jaw-Fang Lee
學位類別:碩士
校院名稱:國立成功大學
系所名稱:水利及海洋工程學系碩博士班
學門:工程學門
學類:河海工程學類
論文種類:學術論文
論文出版年:2009
畢業學年度:97
語文別:中文
論文頁數:80
中文關鍵詞:方向造波三維邊界元素法
外文關鍵詞:three-dimensional boundary element methoddirectional wave generation
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  • 下載下載:26
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本研究主要為利用三維邊界元素法(BEM)模式求解等水深平面水池中方向造波之問題。研究波浪遠離造波板之變化和單位有限寬度造波板對波浪之影響。在三維邊界元素法模式的建立上,Laplace方程式為控制方程式,再配合所使用的自由水面、底床、造波板和側向等邊界條件。側向邊界為符合波浪傳遞之方向,也避免波浪能量由邊界反射。造波板邊界也為單位有限寬度的方向造波板。在數值模式的驗證上,本研究模擬造波運動為連續函數的邊界條件來比較。比較後說明本數值模式可以模擬平面水池方向造波。本研究顯示出波浪的產生符合造波板單元的位相差,而且符合方向波浪遠離造波邊界的最終變化。造波板單元的寬度也影響了波形的產生。寬度較小的可順利發展波峰,另一方面,較大的寬度明顯地產生不連續波形。本研究所建立邊界元素法模式足以計算實際方向造波問題。
In this study, the problem of directional wave generation in a plane wave basin is solved by using a three-dimensional boundary element method, and evolution of generated waves moving away from the wavemaker, and effects of finite width of wavemaker units are on waves investigated. The three-dimensional boundary element model used is developed based on Laplace equation as the governing equation, and accompanying with free surface, bottom boundary, wavemaker, and lateral boundaries. The lateral boundaries aligned with direction of wave propagation are adopted to avoid wave reflection from the boundaries. The wavemaker boundary is also discretized to describe finite width of each unit of the directional wavemaker. On validation of the numerical simulation, an analytical solution of the problem is used for comparison in which the wavemaker motion is a continuous function. And the comparison indicates that the present numerical model can simulate very well the directional wave generation in the plane wave basin. The present study shows that waves are generated consistent with phase difference of the wavemaker units, and with the distance moving away from the wavemaker boundary the directional waves are eventually evolved. The width of the wavemaker unit also affects the generated wave form. The smaller the width the smoother the evolved wave crest, on the other hand, large width creates obvious discontinuous evolving wave forms. The three-dimensional boundary element method model used in this study can calculate very well the problem of directional wave generation.
中文摘要 I
英文摘要 II
誌謝 III
目錄 IV
圖目錄 VI
符號說明 IX
第一章 緒論 1
1-1 前言 1
1-2 文獻回顧 2
1-3 研究方法 5
1-4 本文組織 5
第二章 理論基礎 6
2-1 問題之描述 6
2-2 理論基礎 8
第三章 數值模式 12
3-1 邊界元素法 12
3-2 邊界積分式 12
3-3求解矩陣式 13
3-4 求解內部點 14
3-5 求解水位變化 14
第四章 結果與討論 15
4-1數值模式驗證 15
4-1-1 計算網格 19
4-2 方向造波之計算與討論 35
4-2-1 週期 35
4-2-2 週期 42
4-2-3 週期 47
4-3 不同週期比較結果 50
第五章 結論與建議 53
5-1 結論 53
5-2 建議 54
參考文獻 55
附錄A 方向造波之三維邊界元素法模式 58
附錄B 三維邊界元素法係數矩陣 和 計算式 65
附錄C 座標轉換與係數矩陣之計算 72
1.Boo, S. Y., Kim, C. H., and Kim, M. H., A Numerical Wave Tank for Nonlinear Irregular Waves by 3D Higher Order BEM, Int. J. Offshore Polar Eng. Vol 4,pp.17-24.,1994。
2.Brandini, C. and Grilli, S. , Modeling of Freak Wave Generation in a 3D-NWT, Proceedings of the International Offshore and Polar Engineering Conference, Vol. 3, pp. 124-131.,2001。
3.Dean, R. G. and Dalrymple, R. A. , Water Wave Mechanics for Engineers and Scientists, Prentice-Hall Inc, Englewood Cliffs, New Jersey.,1984。
4.Fochesato, C. ,Dias, F. and Grilli, S. , Wave energy focusing in a three-dimensional numerical wave tank, Proceedings of the Fifteen (2005) International Offshore and Polar Engineering Conference,Vol 3, pp 24-31,2005。
5.Lee , J. J. ,Wave Induced Oscillations in Harbors of Arbitrary Shape , U. S. Army Corps of Engineers .,1969。
6.Liu, S.X. and Hong, K.Y. ,Physical investigation of directional wave focusing and breaking waves in wave basin, China Ocean Engineering ,19(1),pp21-35,2005。
7.Kim, M. H. and Celebi, M. S. Kim, D. J. , Fully Nonlinear Interactions of Waves with a Three-Dimensional Body in Uniform Currents, Applied Ocean Research, Vol. 20, pp. 309-321.,1998。
8.Kim, M. H, P,ark, J.C., Tavassoli, A., Fully nonlinear multi-directional wave simulations by 3D numerical wave tanks. Proceedings of the 14th International Conference on Hydrodynamics, Yokohama,2000。
9.Kim, M. H., Niedzwecki, J. M., Roesset, J. M., Park, J. C., Tavassoli, A., Fully nonlinear multidirectional waves by a 3-D viscous numerical wave tank. Journal of Offshore Mechanics and Arctic Engineering ,ASME 123, pp124-133.,2001。
10.Nakayama, T., Boundary element analysis of nonlinear water wave problems, International journal for numerical method in engineering, Vol 19, pp.935-970.,1983。
11.Park, J. C., Uno, Y., Sato, T., Miyata, H. and Chun, H. H. , Numerical Reproduction of Fully Nonlinear Multi-Directional Waves by a Viscous 3D Numerical Wave Tank, Ocean Engineering, Vol. 31, pp. 1549-1565.,2004。
12.Schäffer, H. A. and Steenberg, C. M. , Second-order wavemaker theory for multidirectional waves, Ocean Engineering, Vol. 30, pp.1203-1231.,2003。
13.Sulisz, W. and Hudspeth, R. T. , Complete Second-Order Solution for Water Waves Generated in Wave Flumes, J. Fluids and Structures, Vol. 7, pp. 253-268.,1993a。
14.Sulisz, W. and Hudspeth, R. T. , Second-Order Wave Loads on Planar Wavemakers, J. Waterway, Port, Coastal and Ocean Engineering, Vol.119, pp. 521-536.,1993b。
15.Takayama, T. , Theory of Oblique Waves Generated by Serpent-Type Wave-Maker, Coastal Engineering in Japan, Vol. 27, pp.1-19.,1984。
16.Williams, A.N. and Crull, W.W. , Simulation of directional waves in a numerical basin by a desingularized integral equation approach, Ocean Engineering, Vol.27, pp.603-624.,2000。
17.Wu, Y. C. and Dalrymple, R. A. , Analysis of Wave Fields Generated by a Directional Wavemaker, Ocean Engineering, Vol. 11, pp.241-261.,1987。
18.Wu, G. X. and Taylor, R. E. , Finite Element Analysis of Two-dimensional Non-linear Transient Water Waves, Applied Ocean Research, Vol. 16, pp. 363-372.,1994。
19.Xu, H., and Yue, D. K. P. , Computations of Fully-Nonlinear 3D Water Wave, Proc. 19th Symp. Naval Hydrodynamics, Seoul,Korea,1992。
20.王豪偉、黃清哲和吳京,三維數值黏性波浪水槽之模擬,第二十六屆海洋工程研討會議論文集,101-108頁,2004。
21.尹彰、周宗仁、林炤圭、黃偉柏,平面造波水池之特性探討,第二十屆海洋工程研討會議論文集,95-102頁,1998。
22.李兆芳,劉正祺,藍元志,直擺式造波二階波浪特性,第十六屆海洋工程研討會議論文集,A60-A83頁,1994。
23.李兆芳、鄭又銘和林大原,平面水池方向造波之數值模擬計算,第二十八屆海洋工程研討會議專題研究計畫,463-468頁,2006。
24.周宗仁、尹彰、林炤圭、黃偉柏,有關平面造波水槽內波場方向分佈函數的探討,第二十屆海洋工程研討會議論文集,80-86頁,1998。
25.周宗仁、林騰威、翁文凱,三維數值水槽之開發與研究(Ⅰ)—理論推導與平行計算運用,第二十六屆海洋工程研討會議論文集,109-115頁,2004。
26.陳俊瑋,平面水池非線性方向造波之理論解析。國立成功大學水利及海洋工程研究所,碩士論文,2005。
27.郭英助,平面水池方向造波之數值模擬。國立成功大學水利及海洋工程研究所,碩士論文,2007。
28.劉正琪,波浪通過潛堤之二階理論解析,國立成功大學水利及海洋工程研究所,博士論文,2002。
29.劉宗龍、雷清宇和黃智偉,數值波浪水槽之發展與應用,第二十六屆海洋工程研討會議專題研究計畫,25-32頁,2004。
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