摘要
本文应用高速摄影方法来观察明渠粗糙定床近床区域的泥沙颗粒运动,获得了近床区域内单颗泥沙在粗糙定床上的跳跃高度的变化规律为: 随机变量 服从Γ—分布: 同时,还获得了颗粒单步跃长的随机分市密度函数亦为Γ—分布:
In this paper high speed camera is used to measure the sediment transport near the rough bed in open channel tlow. The variation of saltation heigh of the single particle on the rigid channel is obtained as the following:The random variable η=(H/D- 1)/(H/D- 1) obeys Γ -distributionThe random distribution function of the single step length of the particle is also obtained asΓ -distribution:
关键词
泥沙
运动
高速摄影
Application of high speed photography, Sediment transport study
