| 研究生: |
黃裕成 Huang, Yu-Cheng |
|---|---|
| 論文名稱: |
複式堰附近之渠流特性及其率定曲線之探討 The Flow in Compound Cross-sectional Weir and Rating Curve |
| 指導教授: |
賴泉基
Lai, Chan-Ji 呂珍謀 Leu, Jan-Mou |
| 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: | 2002 |
| 畢業學年度: | 90 |
| 語文別: | 中文 |
| 論文頁數: | 96 |
| 中文關鍵詞: | 濕週 、複式堰 、流量係數 |
| 外文關鍵詞: | discharge coefficient, wetted perimeter, compound weir |
| 相關次數: | 點閱:105 下載:10 |
| 分享至: |
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複式堰(Compound weir)因為具有斜側堰之影響,故當水流漫淹至主堰(Main weir)和斜側堰(Side weir)交界處時,將導致濕週(Wetted perimeter)的迅速擴張,造成斷面間之流速分佈的不均一性,因此水流經複式堰時,在不同的流量情況下,其渠流特性有著極明顯的差異。此外,在台灣地區,由於高流量與低流量相差懸殊,因此採用複式堰可以為另一量水設施的選擇,但由於其複雜的特性,所以至今尚無明確的流量關係式可資依循。
本文在試驗渠道中設置一複式堰,藉以分析在不同流量或主堰高度時,其堰上水流特性之變化;同時推導複式堰之流量關係式,求得此實驗模型之流量係數與水深的無因次關係圖,以作為今後複式堰流量設計之參考。
A compound weir is the combination of a main weir and a side weir. In low discharge, water flows in the main weir, as discharge increases water will spill over into the side weir. At this time, the wetted perimeter will rapid extend. The velocity between the main weir and the side weir is non-uniform and the flow characteristic on the weir in high or low discharges are quite different.
The study intends to find a possible relation between the water level and the discharge through a specially designed compound weir. The compound weir has a trapezoidal main section and a sloping side weir. Several experiments are conducted in a flume in which the compound weir is installed at the end section of the flume. A control section is formed at the weir. The discharges, the corresponding water levels and the approaching velocity profiles are measured. The results are analyzed and the discharge formulae for the compound weir as well as a dimensionless diagram of the discharge coefficient and water depth are obtained. This dimensionless discharge coefficient equation provides a guideline for designing compound weir at the same shape, but at different dimensions, for practical applications.
參考文獻
1. Blalock M.E. and T.W. Sturm, “Minimum Specific Energy in Compound Open
Channel”, Journal of the Hydraulics Division, ASCE, Vol. 107, No. 6, p699~717,
June, 1981.
2. A.J. Clemmens and M.G. Bos, “Critical Depth Relations for Flow Measurement
Design”, Journal of Irrigation and Drainage Engineering, Vol. 118, No. 4, p640~
644, July/August, 1992.
3. Chaudhry M.H., “Open Channel Flow”, Prentice-Hall Inc. U.S.A., 1993.
4. Heggen R.J., “Critical Depth, Velocity Profile, and Channel Shape”, Journal of
Irrigation and Drainage Engineering, Vol. 117, No. 3, p442~448, May/June,1991.
5. Gogus M. and D. Altmbilek, “Flow-Measurement Structures of Compound Cross
Section for Rivers”, Journal of Irrigation and Drainage Engineering, Vol. 120, No.
1, p110~127, January/February, 1994.
6. Gogus M.and I.A. Al-khatib, “Flow-Meacurement Flumes of Rectangular Comp-
ound Cross Section”, Journal of Irrigation and Drainage Engineering, Vol. 121,
No. 2, p135~142, March/April, 1995.
7. Konemann N., “Discussion of Blalock and Sturm.” Jour. Hydraulics Division,
ASCE, Vol. 108, No. 3, p462~464, 1982.
8. Rajaratnam N. and R.M. Ahmacli, “Interaction Between Main Channel and Flood
Plain Flows.”, Journal of the Hydranlics Division, ASCE, Vol. 105, No. 5, p573~
588, May, 1979.
9. Subramanya K., “Flow in Open Channel”, TATA McGRAW HILL.
10. 李祥, “流體力學觀念剖析”, 鼎茂圖書,1997.
11. 吳祖揚, “灌溉排水工程設計(下冊)”, 台灣省水利局編印, p757~801,1981.
12. 吳俊宏, “複合渠道設置漸變段的局部沖刷與流速分佈研討”, 國立成功大學
水利及海洋工程研究所碩士論文, 2000.
13. 林育輝, “洪水波於複合渠道中傳播過程之研究”, 國立成功大學水利及海洋
工程研究所碩士論文, 1995.
14. 易任, “渠道水力學”, 國立編譯館, 1974.
15. 夏禹九、黃正良、陳明杰, “福山試驗集水區量水堰之設計-分段複式量水
堰”, 台灣林業科學, Vol. 11, No. 2, p113~122, 1996.
16. 陳正炎、洪耀明, “雙出流口式滯洪霸滯洪水理特性之研究”, 中華水土保持
學報, Vol. 32, No. 3, p187~197, 2001.
17. 陳立, “具斜側槽複合渠道臨界流況之研究”, 國立成功大學水利及海洋工程
研究所碩士論文, 2001.
18. 郭致亮, “複式渠道之動量係數與能量係數”, 國立成功大學水利及海洋工程
研究所碩士論文, 1998.
19. 張承宗, “複式斷面渠流特性之研究”, 國立成功大學水利及海洋工程 研究所
碩士論文, 1982.
20. 劉長齡, “水權人裝置自記式量水設備規格及作業規範之研究”, 經濟部水資
源局, http://140.96.175.46/wrb-web/history/Work87/ework/eindex.htm