低佛氏数水跃跃后最大波高的研究

Maximum Post-Jump Height of Hydraulic Jump Wave in Low Froude Number

对低佛氏数水跃消能水跃跃后最大波进行了理论分析和试验研究 ,研究表明 ,低佛氏数Fr =1. 0～ 1. 7情况下的水跃消能率低 ,跃后水面波动是造成下游河床和岸壁冲刷的主要原因。

A theoretical analysis and experimental test were carried out about the low energy dissipation efficiency of hydraulic jump and the largest post jump wave of water surface.The study shows that the low energy dissipation efficiency of hydraulic jump(Fr=1.0～1.7)and the large post jump wave of water surface are the main reasons to cause the erosion of river bed and banks in low Froude number situation.An experience formula about the largest height of wave was obtained.The fermuld is important for the safety of the outlet work.