(18.206.177.17) 您好!臺灣時間:2021/04/11 02:18
字體大小: 字級放大   字級縮小   預設字形  
回查詢結果

詳目顯示:::

我願授權國圖
: 
twitterline
研究生:陳志欣
研究生(外文):Chih-Hsin Chen
論文名稱:數值造波水槽中波浪質量傳輸之研究
論文名稱(外文):Waves induced mass transport in a numerical viscous wave tank
指導教授:黃清哲黃清哲引用關係
指導教授(外文):Ching-Jer Huang
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:2003
畢業學年度:91
語文別:中文
論文頁數:63
中文關鍵詞:質量傳輸
外文關鍵詞:driftmass transport
相關次數:
  • 被引用被引用:2
  • 點閱點閱:206
  • 評分評分:系統版面圖檔系統版面圖檔系統版面圖檔系統版面圖檔系統版面圖檔
  • 下載下載:24
  • 收藏至我的研究室書目清單書目收藏:0
本文利用數值方法求解二維非穩態的Navier-Stokes方程及完整的自由液面邊界條件,建立黏性數值造波水槽,以探討微小振幅波及Stokes波中質量輸送的特性。水槽中的入射波浪由兩種方法產生,一是利用數值水槽中直推式造波板的運動;另一則是在水槽起始處,直接給定勢能理論的流速剖面及自由液面波形。兩種模式所求得之一階流速剖面及自由液面波形均與解析解無異。在確定數值模式的準確性後,本文針對底部邊界層附近及整個流場內的尤拉( Euler )質量傳輸速度及拉格朗日( Lagrange )質量傳輸速度,就數值解及理論解進行討論分析。而與實驗資料比對方面,採用Tsuchiya et al. (1980)所設計的開放性造波水槽(open wave flume)下所量測的實驗結果,與數值解的拉格朗日質量傳輸速和理論解的Stokes質量傳輸速度比較分析。最後就線性波、有限振幅波等不同入射波浪條件下,探討質量傳輸速度隨Ur數的變化。
In this study, a numerical scheme was developed to solve the unsteady, two-dimensional Navier-Stokes equations and the exact free surface boundary conditions for investigating the characteristics of the mass transport induce by the small-amplitude waves and the Stokes waves. The incident waves in the wave tank were produced by either setting up a piston-type wave maker in the computational domain or by providing the wave profile and the velocity profile from the potential theory at the left boundary of the computational domain. Both methods give the same results of the wave and flow fields, witch are shown to be consistent with the first-order analytical solutions. After having verified the accuracy of the model, the numerical of Eulerian and Lagrangian mass transport velocities in the boundary layer and in the whole velocity field were computed and compared with the corresponding analytical solutions. The numerical solution of Lagrange mass transport velocity and the analytical solution of Stokes mass transport velocity were also compared with the experimental data obtained by Tsuchiya et al. (1980) using an open wave flume. Finally, variation of mass transport velocity with Ursell number was investigated under different incident wave conditions.
中文摘要 I
英文摘要 II
謝誌 III
目錄 IV
圖目錄 VI
表目錄 VIII
符號說明 IX
第一章 緒論 1
1-1研究動機 1
1-2前人研究 2
1-3本文組織 5
第二章 理論分析 6
2-1數值造波水槽 6
2-1-1建立控制方程 6
2-1-2無因次化處理 7
2-1-3邊界條件和初始條件 8
2-2波浪質量傳輸速度之推導13
2-2-1邊界層內的尤拉質量傳輸速度13
2-2-2邊界層內的拉格朗日質量傳輸速度16
2-2-3內部流場的尤拉質量傳輸速度18
第三章 數值方法 20
3-1計算網格之配置 20
3-2邊界及計算網格的處理20
3-2-1自由液面上速度及壓力之計算20
3-2-2自由液面位置及計算網格的處理23
3-2-3底部邊界層網格處理 24
3-2-4下游邊界網格處理 26
3-3計算流程 27
第四章 結果與討論 29
4-1 數值方程式之驗證 29
4-1-1微小振幅波 31
4-1-2有限振幅波 36
4-2 微小振幅波質量傳輸速度之驗証40
4-2-1邊界層內尤拉質量傳輸速度41
4-2-2邊界層內拉格朗日質量傳輸速度45
4-2-3流場內尤拉質量傳輸速度47
4-2-4流場內拉格朗日質量傳輸速度49
4-3非線性波質量傳輸速度52
4-4本數值模式與實驗結果之比較55
4-5質量傳輸速度隨Ur數的變化57
第五章 結論與建議 59
5-1結論 59
參考文獻 61
自述 64
1.Bagnold, R. A.,”Sand Movement by Waves: Some Small Scale Experiment with Sand of Very Low Density”, J. Institution of Civil Engineers, Vol.27, No.4, pp. 447-469, 1947.
2.Caligny, A. F. H. de C. R.,”Experience Sur Les Mouvements Des Molecules Liquides Des Ondes Courantes, Considerees Dans Leur Mode D’action Sur La Marche Des Navires”, C. R. Acad. De Sci., Vol. 87, pp. 1019-1023, 1878.
3.Carter, T. G., P. L-F Liu, and C. C. Mei.,”Mass transport by waves and offshore sand bedforms”, Journal of the Waterways, Harbors and Coastal Engineering Division, ASCE, 99(WW2), pp. 165-184, 1973.
4.Chen, R. K., and Street, R. L., ”A Computer Study of Finite-Amplitude- Water Waves”, J. Comput. Phys., Vol. 6, pp. 95-104, 1970.
5.Craik, A. D. D.,”The Drift Velocity of Water Waves”, J. Fluid Mechanics, Vol.116, pp.187-205, 1982.
6.Dean, R. G. and Dalrymple, R. A.,”Water Waves Mechanics for Engineers and Scientists”, Prentice-Hall, Englewood Cliffs N.J., 1984.
7.Harlow, F. H. and Welch, J. E.,”Numerical Calculation of Time-Dependent Viscous Incompressible Flow of Fluid with Free Surface”, Phys. Fluids, Vol. 8, pp. 2182-2189, 1965.
8.Huang, N. E.,”Mass Transport Induced by Wave Motion”, J. Marine Research, Vol.28, No.1, pp.35-49, 1970.
9.Kim, Tae In,” Mass Transport in Laboratory Water Wave Flumes”, PH.D.,1984.
10.Longuet-Higgins, M. H.,”Mass Transport in Water Waves”, Philosophical Transaction of the Royal Society of London, A245 (903), pp. 535-581, 1953.
11.Longuet-Higgins, M. H.,”Mass Transport in the Boundary Layer at a Free Oscillating Surface”, J. Fluid Mechanics, Vol.8, No.2, pp.293-306, 1960.
12.Madsen, O. S.,”On the Generation of Long Waves”, J. Geophysical Res., Vol.76, pp. 8672-8683, 1971.
13.Mizuguchi, M.,”Second-order Solution of Laminar Boundary Layer Flow under Waves”, Costal Engineering in Japan, Vol.30, No. 1, pp. 9-18, 1987.
14.Phillips, O. M.,”The Dynamics of the Upper Motion”, 2nd Edition, Cambridge University Press, 1977.
15.Rayleigh, L.,”On Waves”, Philosophical Magazine, Vol.5, No.1, pp. 257-279, 1883.
16.Stokes, G. G.,”On the Theory of Oscillatory Waves”, Transactions of the Cambridge Philosophical Society, Vol.8, pp. 441-455, 1874.
17.Tang, C.J., V.C. Patel, and L. Landweber.,”Viscous effects on propagation and reflection of solitary waves in shallow channels”, J. Comput. Physics, Vol. 88, No. 1, pp. 86-113, 1990.
18.Trevor G. Carter, Philip L-F. Liu and Chiang C. Mei,”Mass Transport by Waves and Offshore Sand Bedforms”,J. The waterways, Harbors and Costal Engineering Division, ASCE, Vol.99, pp. 165-184, 1973.
19.Tsuchiya, Y., T. Yasuda and T. Yamashita,”Mass Transport in Progressive Waves of Permanent Type”, Proceeding of the 17th Conference on Costal Engineering, ASCE, Sidney, Australia, March, pp. 70-81, 1980.
20.United States Beach Erosion Board, ”A Study of Progressive Oscillatory Waves in Water”, Technical Report No.1, Government Printing Office, Washington D. C., U.S.A, 1941.
21.郭金棟,”海岸工程”,中國土木水利工程師學會,1995.
22.林呈、黃煌輝,”波動淺化過程底部邊界層流場之實驗研究”, 中華民國力學期刊,pp. 67-76,1989.
23.董志明,”數值黏性造波水槽之發展及其應用”,國立成功大學水利及海岸工程研究所博士論文,2000.
24.洪志豪,”波浪邊界層之數值模擬”,國立成功大學水利及海岸工程研究所碩士論文,2000.
連結至畢業學校之論文網頁點我開啟連結
註: 此連結為研究生畢業學校所提供,不一定有電子全文可供下載,若連結有誤,請點選上方之〝勘誤回報〞功能,我們會盡快修正,謝謝!
QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top
系統版面圖檔 系統版面圖檔