摘要
General equations of hydraulic jump in adverse sloping channels have been derived in this study. The equations of hydraulic jump in adverse sloping channels such as rectangular, parabolic and triangular channels are also been given. In addition, characteristics equations of hydraulic jump in adverse sloping channels, i. e. loss of energy, efficiency of jump and length of jump are also presented in this investigation. An experimental study is conducted in rectangular tilting flume by varying the discharge and bed slope from 0 to 0.05 with 0.005 increment interval as sluice gate opening fixed at 2 cm in height. The relationships between experimental and theoretical results are also compared and investigated in this study. The results obtained from this study indicate that there are many factors influence in jump occuring and inconsistency conditions which indicated clearly as the bed slope is adversely steepen.
關鍵字
無資料並列摘要
逆坡槽水躍之一般化斷面公式曾推導於本文之研究中，其中特殊斷面，諸如矩形、拋物線形以及三角形斷面渠道之特別公式仍導列文中。逆坡槽水躍之其他特性公式，包括能量損失，水躍之效率以及躍長均推導包括於本研究中。一可變換流量大小以及可傾側活動坡度之矩形槽曾用於實驗室中進行試驗研究，其坡度自零變換至0.05。試驗結果曾應用於驗證矩形槽之理論公式，得知其結果相當良好。唯當逆坡槽坡度增大時，誤差增大，其有關影響水躍之重要因素有待進一步研究。