船闸闸墙廊道侧支孔射流研究

A study of lateral orifice jet of side-port longitudinal culvert filling and emptying system of ship lock

摘要: 建立侧支孔射流水力学物理模型,使用PIV测速仪测量了多组流量条件下侧支孔射流无槛工况和设槛工况孔前垂向中轴面的流速分布,通过划分流场结构和提取流场断面等方法,归纳和总结了侧支孔射流的流速分布规律.根据试验结果得出了无槛工况断面最大流速和断面最大流速点相对高度的沿程变化曲线,绘制了设槛工况槛后射流中心线,拟合得出了沿射流中心线的速度计算公式.

Abstract: Hydraulic model of lateral orifice jet is set up.Velocity distribution of the vertical axial surface of lateral orifice jet is measured with PIV system in different discharges under non-threshold and with-threshold conditions.The velocity distribution laws of lateral orifice jet are summarized and summed up through methods such as dividing flow field structure and extracting flow field cross section.Based on the experimental results,the on-way curves of maximum velocity of the cross-section and the relative...