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研究生:張嘉裕
研究生(外文):Chia-Yu Chang
論文名稱:波浪場中圓孔浮昇射流排放角度對表面稀釋率之影響
論文名稱(外文):Effect of Discharge Angles on The Dilution of Buoyant Jet in Wave Motions
指導教授:錢紀銘錢紀銘引用關係黃煌煇黃煌煇引用關係
指導教授(外文):J. M. ChyanH. H. Hwung
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:2002
畢業學年度:90
語文別:中文
論文頁數:61
中文關鍵詞:排放角度稀釋率浮昇射流
外文關鍵詞:discharge angledilutionbuoyant jet
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  • 下載下載:17
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  本文旨在研究關於波浪場中圓孔浮昇射流排放角度的變化與波浪條件同時作用下,透過表面稀釋率的定量量測,以明白稀釋特性的演變,期能歸納出其間的相關特性,作為日後海洋放流工程設計上的參考。而為保持流場特性的不受干擾,本文乃利用雷射誘發螢光原理(LIF),以及影像處理技術,結合兩者以建立本文之量測系統作為研究之工具。
  根據實驗觀測與分析結果得知在波浪運動下之浮昇射流,因射流運動將隨波浪而有往復性地擺盪,不僅邊界寬度的擴展較純射流時大,稀釋率也將大幅提升,而角度變化對其造成的影響,仍是隨角度遞增而遞減。經由表面稀釋率定量量測結果發現,在順向或逆向射流時,表面稀釋率皆優於純射流,兩者其無因次表面稀釋率S/So值皆隨著波浪參數Lq/Zm呈線性遞增,且在相同角度下,逆向射流之表面稀釋率略優於順向射流。再者,於一般海洋放流環境,波浪條件屬於中間性水波,則可由本文之研究結果歸納之經驗式,求得欲估算已知排放角度之表面稀釋率值,以供工程設計上之參考。
  In order to understand the characteristics of dilution of buoyant jet discharged from different angles in wave motions, the combination of laser induced fluorescence(LIF) techniques and image processing was established in the measuring system.
  The results of experiment show that the trajectory of jet flow was deflected by wave action periodically. The dilution and spreading rate of boundary were wider than pure buoyant jet. From the quantative results of surface dilution measurements, it can be concluded that the surface dilution rate of jet with wave condition is greater than the cases without wave motion. The dimensionless surface dilution(S/So) increases in proportion to the non-dimensional wave parameter(Lq/Zm). The surface dilution of opposing wave direction is slightly better than the same direction. Further, there is a reference in generally ocean outfall environment that if the discharge angle was known, the surface dilution can be estimated from the experiential equation in this paper.
中文摘要 I
英文摘要 II
誌謝 III
目錄 IV
圖目錄 VI
表目錄 VIII
相片目錄 VIII
符號說明 IX
第一章 緒論 1
1-1 研究動機 1
1-2 文獻回顧 3
1-3 本文組織 5
第二章 實驗之原理、佈置及步驟 6
2-1 因次分析 6
2-2 實驗設備與佈置 9
2-2-1 實驗水槽 9
2-2-2 射流製造系統 11
2-2-3 影像處理系統 11
2-2-4 系統之驗證 13
2-3 實驗條件及步驟 15
2-2-3 實驗條件 15
2-2-3 實驗步驟 15
第三章 結果與討論 21
3-1 浮昇射流稀釋特性 21
3-1-1 浮昇射流之流場特性 21
3-1-2 靜水時不同排放角度浮昇射流之濃度分布特性 26
3-2 波浪場中之稀釋特性 34
3-2-1 波浪場中浮昇射流局部濃度分布特性 36
3-2-2 表面稀釋率之定量量測結果 40
3-3 排放角度對表面稀釋率的影響 49
第四章 結論 56
參考文獻 58
附錄 61
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