臺灣博碩士論文加值系統

河川潛板系統是國外常見之河川護岸工法，水流經過潛板時於下游流場產生尾跡渦流，藉由此一尾跡渦流抵消彎道中的二次流，以保護河川凹岸不被侵蝕。由於受到流體紊動與黏滯效應的影響，近床徑向剪應力不僅在橫斷面會有消散的情況發生，越往下游則亦會有衰竭消散的情形。本研究之目的在應用三維聲波都卜勒測速儀對各種尺寸之潛板所產生的流場進行量測，結合前人的研究結果，將徑向流速轉換為徑向剪應力，找出潛板在各種尺寸下於底床所產生之徑向剪應力的分布情形。研究結果顯示，尾跡渦流在潛板下游10倍水深時之強度約為1倍水深時的一半，設置角度25°之潛板效能優於設置角度15°之潛板，在本研究討論的範圍內潛板高度的最佳設計值為0.52~0.8倍水深，潛板長度的最佳設計值為1.6倍水深，於設計潛板時可依據潛板的設置目的選擇適當的潛板尺寸。

Submerged vane system is a technique for river bank protection. By inducing a wake vortex downstream, the secondary vortex in the channel bend responsible for the erosion of the concave bank is reduced and the foundation of the bank is strengthened. Due to the viscous and turbulent dissipation of the fluid flow, the strength of the vane-induced near bed transverse shear stress gradually decreases both in the transverse and stream-wise direction. Using a 3D Acoustic Doppler Velocimeter, this study measured the near bed transverse velocity induced by vanes with various dimensions. The vane-induced transverse bed shear stress is then calculated by utilizing a formula deriued by previous researchers. The results show that the strength of the wake vortex at 10 water-depths downstream of the vane drops down to half of the strength at 1 water-depths downstream. The performance of the vanes with 25° to the flow is better than those with 15°. In the cases studied, the optimal vane-height is with in the range of 0.52~0.8 water-depths and the optimal vane-length is 1.6 water-depths. The selection of the vane-dimension thus relies up on the purpose of the vane.

摘要
Abstract
誌謝
目　錄
表目錄
圖目錄
符號表
第一章　緒論
1-1　前言
1-2　文獻回顧
1-3　研究目的
1-4　研究方法
1-5　論文架構與研究流程
第二章　試驗佈置
2-1　試驗水槽
2-2　潛板設置
2-3　三維聲波都卜勒測速儀
2-3-1　ADV原理
2-3-2　儀器設備介紹
第三章　試驗量測
3-1　因次分析
3-2　試驗條件
3-3　底床徑向剪應力
3-4　資料分析
第四章　資料分析與模式建立
4-1　最大徑向剪應力之迴歸分析
4-2　徑向剪應力分布幅度之迴歸分析
第五章　結果與討論
5-1 縱斷面最大徑向剪應力分布
5-1-1　最大徑向剪應力於水流方向之變化
5-1-2　潛板高度對最大徑向剪應力之影響
5-1-3　潛板長度對最大徑向剪應力之影響
5-2　橫斷面徑向剪應力分布
5-2-1　徑向剪應力分布幅度於水流方向之變化
5-2-2　潛板高度對徑向剪應力分布幅度之影響
5-2-3　潛板長度對徑向剪應力分布幅度之影響
5-3　潛板最佳設計
第六章　結論與建議
6-1 結論
6-2 建議
參考文獻

參考文獻
ADV User’s Manual. Sontek Company, 2001.
Falcon, M. E., and Kennedy, J. F. (1983). “Flow in alluvial-river curves.” Journal Fluids Mechanics, 133, 1-16.
Joukowski, N. E. (1906). “Sur les Tourbillons Adjionts.” Traraux la Section Physique de la Societe Imperiale des Science Naturales, Vol.13, No. 2.
Kutta, M. W. (1902). “Auftriebskrafte in Stromenden Flussigkeiten.” Illustrierte Aeronautische Mitteilungenm Vol. 6, p133.
Lancaster, F. W. (1926). “Sustentation in flight.” Journal of Royal Aeronautical Society, 30, 587-606.
Marelius, F., and Sinha, S. K. (1998). “Experimental investigation of flow past submerged vanes.” Journal of Hydraulic engineering, Vol. 124, No. 5, p542-545.
Odgaard, A. J., and Kennedy, J. F. (1983). “River-bend bank protection by submerged vanes.” Journal of Hydraulic Engineering, ASCE, 109(8), 1161-1173.
Odgaard, A. J., and Mosconi E. C. (1987). “Streambank protection by submerged vanes.” Journal of Hydraulic Engineering, ASCE, 113(4), 520-536.
Odgaard, A. J., and Spoljaric, A. (1986). “Sediment control by submerged vanes.” Journal of Hydraulic Engineering, ASCE, 112(12), 1164-1181.
Odgaard, A. J., and Spoljaric, A. (1989). “Sediment control by submerged vanes.” Design basis, in: Ikeda, S., G. Parker, River meandering Water Resources Monograph 12, 1989, American Geophysical Union.
Odgaard, A. J., Wang, Y. (1991). “Sediment management with submerged vanes. I : theory.” Journal of Hydraulic Engineering, ASCE, 117(3), 267-283.
Rozovskii, I. L. (1957). “Flowof water in bends of open channels.” The Israel Program for Scientific Translations, Jerusalem, Israel.
Tan, S. K. (2005). “Flow structure and sediment motion around submerged vanes in open channel.” Journal of Waterway, Port, Coastal, and Ocean Engineering, Vol. 131, No. 3, May 1, p132-136.
Wang, Y. (1991). “Sediment control with submerged vanes.” Ph. D. thesis, Univ. of Iowa, U.S.A..
Wang, Y. (1996). “Sediment control at water intakes.” Journal of Hydraulic engineering, Vol. 122, No. 6, p353-356.
Zimmerman, C., and Kennedy, J. F. (1978). “Transverse bed slopes in curved alluvial streams.” Journal of Hydraulic Div., ASCE, 104(1), 33-48.
Zijlstra, R. (2003). “The morphological effect of bottom vanes an experimental and a mathematical study.” M. Sc. thesis, Univ of Delft, Netherlands.
李鴻源、葉克家(2002)，「基隆河水尾灣彎道潛板之可行性研究」，經濟部水利者第十河川局。
林政斌(2007)，「河川潛板系統形狀變化對交互作用現象及系統最佳設置之影響」，國立宜蘭大學土木工程學系碩士論文。
張廷豪(1999)，「大型飛機黏性渦漩尾流之衰減分析」，國立成功大學航空太空工程學系碩士論文。
鄧力瑋(2007)，「設置潛板之定床彎道流場數值模擬研究」，國立交通大學土木工程學系碩士論文。
劉長齡、黃進坤、邱銘鴻(1999)，「隔板對泥砂導流及局部沖刷之試驗研究」，臺灣水利 第47卷第1期1-7。
盧志晃(2006)，「河川彎道中潛板系統最佳設置之研究」，國立宜蘭大學土木工程學系碩士論文。
盧志晃、歐陽慧濤(2006)，「渠道垂直岸壁對河川潛板導砂效能之影響」，第二屆垚淼士木暨營建發展研討會，大漢技術學院，花蓮，A-01。
羅元宏(2006)，「河川潛板最佳尺寸與形狀之探討」，國立宜蘭大學土木工程學系碩士論文。