摘要
本文将流速对数律和流速指数律相联系,推导了溢流反弧段的摩阻流速的计算公式,对其进行了分析。并利用所量测的反弧段流速指数和边界层的资料,计算了不同粗糙度和不同曲率半径时反弧壁面摩阻流速及切应力等。
In this paper, a formula which calculate the friction velocity on bucket of spillway dam has been deduced by connecting the exponential law of velocity with the logarithmic law of velocity. The friction velocity and surface viscous shear stress on bucket have been calcu- lated by using the formation measuring results. Some effects of surface roughness and survature on the friction velocity and surface viscous shear strees have been revealed.
关键词
反弧段
摩阻流速
分析
计算
溢流
friction velocity of bucket, exponential law and lagarithmic law of velocity, roughness and curvature
