摘要
本文从连续性方程的讨论出发,建立了沿垂线积分的弯道水流纵向运动方程.根据弯道水流纵向运动方程,提出了弯道水流纵向垂线平均流速计算公式.此公式获得了与弯道水流实测试验成果基本吻合的计算成果.由纵向垂线平均流速分布公式,进一步导出了水流出弯后流速调整段长度的计算公式.同时,根据理论公式,分析了各种因素对弯道水流平面特性的影响.
Proceeding from discussing the equation of continuity, this paper presents a longitudinal equation of flow from thl integration of velocity of vertical lines along curved open channel. According to the longitudinal equation of flow movement in channel bends, the theoretical formula of depth-averaged longitudinal velocity distrbution is established. The calculated results from the formula are primarily agreed with the experiment data of the bend flow in models. In accordance with the formula of depth-averaged longitudinal velocity, the formula of velocity adjustment length in exit is set up. Meanwhile, on the basis of theoretical formulas, the influences of different factor to the characteristics in plane of the bend flow are analysed.
出处
《泥沙研究》
CSCD
北大核心
1992年第4期24-34,共11页
Journal of Sediment Research
