簡易檢索 / 詳目顯示

研究生: 張家嬨
Chang, Chia-Tzu
論文名稱: 波壓及流速與波高間轉換函數之研究
Transfer function between wave height and wave pressure or velocity of flow
指導教授: 陳陽益
Chen, Yang-Yih
學位類別: 碩士
Master
系所名稱: 工學院 - 水利及海洋工程學系
Department of Hydraulic & Ocean Engineering
論文出版年: 2016
畢業學年度: 104
語文別: 中文
論文頁數: 75
中文關鍵詞: 波壓流速轉換函數經驗公式
外文關鍵詞: wave pressure, velocity of flow, transform function, empirical correction formula
相關次數: 點閱:71下載:0
分享至:
查詢本校圖書館目錄 查詢臺灣博碩士論文知識加值系統 勘誤回報
  • 真實的海洋波浪是由各種不同成分的規則波列所組合而成,欲掌握這複雜且不規則的海洋波動現象,本研究由規則波為基礎,藉由實驗室模擬規則波實驗取得實驗數據,採用波壓與波高轉換函數、波流與波壓轉換函數、經驗校正公式、因次分析四個方法,進行後續的資料分析與處理後,整合討論水中波壓、波高和流速三者間之相關性。
    由實驗結果得知,經驗校正係數N隨著週期T遞增而變大,得到經驗校正係數N與週期T間定量變化之關係。本研究與Bergan, P.O.等人(1968)的實驗相互比較,發現當週期小於T=0.8(s)以下時,則無法再使用一階線性理論來預測波壓。由結果顯示,當轉換函數加上流速項後,實驗波高與理論計算所得波高差異仍大,既使加上流速項亦仍無法準確預測水位變化。
    而本實驗直接運用規則波資料,採用因次分析的方法,找出規則波波高與波壓的轉換函數之經驗公式,此經驗公式與其他學者的量測結果比較,可以視為實驗室進行規則波實驗之通用公式。

    A series of ocean waves are generated by several regular waves of various sources. To understand the complex and irregular ocean phenomena, this research is based on regular waves. Modeling regular waves to laboratory experiments, and deal with experiment data onto four methods. These methods are transforming the wave pressure to wave height, transforming the wave pressure on velocity of flow, empirical correction formula and dimensional analysis. Base on the experiments with data, to investigate the relationships of wave pressure versus wave height and velocity of flow.

    The experimental results showed that the empirical correction coefficient N decreases to decreasing period, being greater than T=1(s) for gravity waves. Compare with Bergan, P.O. et al (1968) this research finds the period less than T=0.8(s) for short gravity waves, which it is not available used first-order linear theory to predict the wave pressure. The results showed that transforms function add velocity of flow item, the experimental wave height and theoretical wave height difference vary considerably. Even add velocity to the transform function, wave height still show inexact data onto the equation, and can’t predict surface water.

    This study directed applies to experiment with regular wave data, and used dimensional analysis to find the empirical correction formula. The results showed that the new empirical correction formula could apply to all regular wave experiments.

    摘要 I Abstract II 誌謝 XII 目錄 XIII 表目錄 XV 圖目錄 XVI 符號說明 XIX 第一章 緒論 1 1.1 研究背景 1 1.2 研究動機與目的 3 1.3 文獻回顧 5 1.4 研究流程 17 1.5 本文架構 19 第二章 相關理論 20 2.1 基礎理論背景 20 2.2 波壓與波高間轉換函數 23 2.3 經驗校正係數N 24 2.4 流速與波高間轉換函數 25 2.5 因次分析 26 2.6 經驗公式的轉換函數 28 第三章 實驗設備與實驗方法 29 3.1 實驗目的 29 3.2 實驗設備與儀器 29 3.2.1 波流斷面水槽 30 3.2.2 造波機 32 3.2.3 波高計 34 3.2.4 流速儀 36 3.2.5 壓力計 39 3.2.6 訊號增幅器 41 3.2.7 資料擷取盒 42 3.2.8 數位/類比訊號擷取卡 43 3.3 實驗配置 44 3.4 實驗步驟 46 3.4.1 實驗步驟 46 3.4.2 儀器率定 48 3.4.3 率定曲線 49 3.5 水位分析 52 3.5.1 實驗數據品質管理 52 3.5.2 零切法 53 3.5.3 實驗重複性 55 第四章 實驗分析與結果 57 4.1 實驗條件 57 4.2 實驗數據分析方法 58 4.3 實驗數據分析結果 59 第五章 結論與建議 67 5.1 結論 67 5.2 建議 69 參考文獻 70 附錄 72

    1. Bergan, P.O., Torum, A. and Tratteberg, A., “Wave measurements by pressure type wave gauge. ”, Proc.11th Coastal Eng. Conf., ASCE, pp.19-29, 1968
    2. Biesel, F., “Second order theory of manometer wave measurement. ”, Proc.18th Coastal Eng.Conf.,ASCE, pp.129-135,1982.
    3. Bishop, C. T., and Donelan, M. A. , “Measuring waves with pressure transducers. ”, Proc. 4th Coastal Eng. Conf., ASCE,, pp.309-328, 1987
    4. Cavaleri, L., Ewing, J. A., and Smith, N. D., “Measurement of the pressure and velocity field below surface waves. ”, Springer US., Vol 1, pp.257-272, 1978
    5. Folsom, R. G., “Sub-surface pressures due to oscillatory waves.”, Transactions , American Geophysical Union ,Vol 28, pp.875-881, 1947
    6. Folsom, R. G., “Measurement of ocean waves.”, Transactions , American Geophysical Union ,Vol 30,Nun 5, pp.691-699, 1949
    7. Forristall, G. Z., “ Subsurface wave-measuring systems. ”, In Proceedings of a Symposium and Workshop on wave measurement technology. Marine Board of the National Research Council, pp.194-209, 1982
    8. Gabriel, D. W., and Hedges, T. S., “Effects of currents on interpretation of sub-surface pressure spectra. ”, Proc. 10th Coastal Eng. Conf., ASCE, pp.309-323, 1986.
    9. Grace, R.A., “Surface wave heights from pressure records. ”, Proc.2th Coastal Eng.Conf.,ASCE, pp.55-67, 1978
    10. Hom-ma, M., Horikawa, K. and Komori, S., “Response charactics of underwater wave gauge. ” Proc. 10th Coastal Eng. Conf., ASCE, pp.99-114, 1966
    11. Huang, M.C., “Comparsion of pressure transfer functions. ” 海洋工程學刊第一期,pp.23-34, 2000
    12. Kim, Y. Y., and L. H. Simons. “Sea state measurements from pressure records. ”,Proc. Int. Symp. on Ocean Wave Measurement and Analysis, New Orleans, Am. Soc. Civ. Eng., New York, NY., pp.40-53, 1974.
    13. Lamb, H., “Hydrodynamics. ”, 6th ed.,Cambridge university press,1932
    14. Lee, D. Y., and Wang, H., “ Measurement of surface waves from subsurface gage. ”, Proc. 19th Coastal Eng. Conf., ASCE, pp.271-286, 1984
    15. Seiwell, H. R., “Investigation of underwater pressure records and simultaneous sea surface patterns.”, Transactions , American Geophysical Union ,Vol 28, pp.722-724, 1947
    16. Simpson, J. H., “Observations of the directional characteristics of sea waves.”, Geophysical Journal International, Vol 17, pp.93-120, 1969
    17. Sobey, R.J. and Hughes, S.A. , “A locally nonlinear interpretation of PUV measurements. ”, Proc. 36th Coastal Eng. Conf., ASCE, pp.17-36. ,1999
    18. 邱永芳、郭一羽、簡仲璟,『海洋波浪之波高與波壓間的轉換函數』,港灣技術第八期,pp.69-85, 1993
    19. 邱永芳, 『波壓及水粒子速度與波高間轉換函數之研究』,國立交通大學博士論文,1993
    20. 何明憲, 『波高與波壓間轉換函數之研究』,國立交通大學碩士論文,1993
    21. 李泰初, 『波浪水粒子速度與波壓的頻譜特性研究』,國立交通大學碩士論文,1991
    22. 陳松輝, 『水中波壓與水面波浪間轉換函數之研究』,國立成功大學碩士論文,2002
    23. 黃啓天, 『水中波壓與波高之相關性的研究』,國立交通大學碩士論文,1989
    24. 龔書聖, 『波壓轉換函數之數值解析』,國立成功大學碩士論文,2003

    無法下載圖示 校內:2017-09-05公開
    校外:不公開
    電子論文尚未授權公開,紙本請查館藏目錄
    QR CODE