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博碩士論文 etd-0716112-123806 詳細資訊
Title page for etd-0716112-123806
論文名稱
Title
孤立波在直立壁上之反射試驗
Experiments on reflection of solitary waves at a vertical wall
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
179
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2012-06-25
繳交日期
Date of Submission
2012-07-16
關鍵字
Keywords
相位偏移、最大溯升、反射、對撞、孤立波
phase shift, maximal run-up, reflection, collection, solitary waves
統計
Statistics
本論文已被瀏覽 5826 次,被下載 799
The thesis/dissertation has been browsed 5826 times, has been downloaded 799 times.
中文摘要
  以往對於孤立波對撞或經直立壁反射研究方面主要集中於理論解析與數值模式模擬方面,此乃因孤立波在相互對撞或是經直立壁反射時其反應時間相當短暫且波形不易捕捉量化,故於實驗研究部分甚少。
  本文以實驗方式在一斷面水槽中以高速攝影機拍攝孤立波經一光滑直立壁反射之運動行為,事先在水槽中放置一網格版,將網格版影像拍攝儲存,藉由影像處理方式將像素座標轉換成真實座標。之後攝影機皆保持不動,造一孤立波讓其經直立壁反射,即可將拍攝之影像與網格面重疊,得到波形變化的真實座標。
  本文由試驗結果將幾個重要參數在不同相對波高(入射波高對平靜水深之比)下作一量化處理,如孤立波撞擊直立壁之最大溯升、殘留時間、相位偏移等,與理論解析、數值模式等做一比較與討論,並將前人實驗部分不足之處加以修正。
  另外,本文也將實驗結果與Chambarel.et.al(2009)所發表的"residual falling jet"新現象作一討論比較,提供往後研究作一良好參考結果。
Abstract
  The research on collection or reflection of solitary waves mainly focus on numerical model and theoretical analytics, there are few study on experiment. due to the process on reaction of solitary waves are very short in times, and the waveform is also hardly to measure quantifiable.
  The method present in this paper that we setup a high speed camera at a fixed position, and a grid-point board is located in the water tank and out of the tank after pictured, then we capture the process on reflection of solitary wave at a wall by high speed camera, so that the waveform and the grid surface coincide. finally, we analyze the waveform within the grid by using image techniques.
  The results of this paper that present several important parameters in several relative wave height, such as maximal run-up, residual time, phase shift..et.al. the other hand, this paper compare the result of experiment with available evidences likes numerical model and theoretical analytics that found to be in quantitative agreement.
  In addition, this paper also present the result of experiment that could compare with the new phenomenon "residual falling jet”, it`s published by Chambarel.et.al (2009) numerical model.
目次 Table of Contents
摘要............................................................................................................I
Abstract.....................................................................................................III
目錄...........................................................................................................V
圖次.........................................................................................................VII
表次.........................................................................................................XII
符號說明................................................................................................XIII
第一章 緒論 ........................................................................................... 1
1-1 研究動機與目的 ................................................................... 1
1-2 文獻回顧 .............................................................................. 2
1-3 研究方法 .............................................................................. 7
1-4 論文架構 .............................................................................. 8
第二章 實驗設備與研究方法 ................................................................ 9
2-1 實驗設備 ................................................................................ 9
2-1-1 基本設備 ................................................................. 9
2-1-2 攝影裝置 ............................................................... 12
2-1-3 反射直立壁牆面 .................................................... 16
2-2 實驗佈置 .............................................................................. 16
2-3 實驗方法與步驟................................................................... 17
第三章 試驗分析與結果 ...................................................................... 24
VI
3-1 造波波形與波速比較 ........................................................... 24
3-2 波形在直立壁面上之運動行為 ........................................... 36
3-3 波形在直立壁面上之最大溯升 ........................................... 40
3-4 波形在直立壁面之反射 ....................................................... 42
3-4-1 波形在直立壁面上最大溯升時間點 ................... 53
3-4-2 波形經直立壁面反射前後之波峰殘留時間 ....... 54
3-4-3 波形在直立壁面反射前後之相位偏移 ............... 58
第四章 殘留下降凸射(residual falling jet)之比較 ................................ 60
第五章 結論與建議 ............................................................................. 73
5-1 結論 ........................................................................................ 73
5-2 建議 ........................................................................................ 75
參考文獻 ............................................................................................... 76
附錄 實驗圖表之原始資料 .................................................................. 78
參考文獻 References
  1. 林楚佑(2011)“Largrangain 方式下之孤立波特性之研究”,國立中山大學論文。
  2. 李政達(2008)“波流場中質點運動特性之試驗研究”,國立中山大學論文。
  3. 陳陽益、林西川(1982)“無窮級數之孤立波解析”,成功大學造船工程學報第10期,pp.47-57。
  4. 陳陽益(1983) “波浪通用模式與最大波之解析”,國立成功大學博士論文。
  5. 張裕弦(2008) “孤立波溯升之研究”,國立成功大學博士論文。
  6. Goring, D.G. and Raichlen, F.(1980) “the generation of long waves in the laboratory,”proc. 17th International Conference on Coastal Engineering,ASCE,pp.763-783.
  7. Byatt-Smith, J. G. B. “An integral equation for unsteady surface waves and a comment on the Boussinesq equation., ”J. Fluid Mech., 49, 625–633, 1971.
  8. Byatt-Smith, J. G. B.“The reflection of a solitary wave by a vertical wall,” J. Fluid Mech. 197,503-521.1988.
  9. Cooker, M. J., Weidman, P. D., and Bale, D. S. “Reflection of a high-amplitude solitary wave at a vertical wall,” J. Fluid Mech., 342, 141–158, 1997.
  10. Goring, D.G.(1978) “Tsunami :the propagation of long waves on a shelf,”Rep. KH-R-38,M.Keck. Laboratory of hydraulics and water resources, California Institute of technology, Pasadena, CA.,pp.337 .
  11. Chambarel.J,. Kharif.C,and Touboul.J,(2009)“Head-on collision of two solitary waves and residual falling jet formation,”Nonlin. Processes Geophys., 16, 111–122
  12. Maxworthy, T.“Experiments on collisions between solitary waves.,”J. Fluid Mech., 76, 177–185, 1976.
  13. Oikawa, M. and Yajima, N.“Interactions of solitary waves - a perturbation approach to nonlinear systems.,”J. Phys. Soc. Japan, 34,1093–1099, 1973.
  14.Su, C. H. and Mirie, R. M.“On head-on collisions between two solitary waves., J. Fluid Mech.,”98, 509–525, 1980.
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