陡坡台阶式溢洪道中的水翅现象  

Water-Wing on Steep Slope Stepped Spillways

作　　者：冯瑞林[1] 李布雳[1] 韩玙[1] 田嘉宁[1] 

机构地区：[1]西安理工大学水利水电学院,陕西西安710048

出　　处：《西安理工大学学报》2005年第2期208-211,共4页Journal of Xi'an University of Technology

基　　金：陕西省自然科学基金资助项目(E218);陕西省教育厅专项基金资助项目(01JK183)

摘　　要：水翅是陡坡台阶式溢洪道在流量较小时出现的一种水流现象。模型试验表明:当斜坡角度为40°～60°时,水翅存在于几乎整个跌落水流范围内,甚至持续到过渡水流;随着溢洪道底坡的增大,水翅存在的流量变化范围增大、高度增加;随着台阶尺寸的减小,水翅高度降低,所存在的流量变化范围缩小。The water-wing always appears when discharge on steep slope stepped spillways is smaller. Model experimental studies indicating that when the base slope of spillways changes within the range of 40 degrees to 60 degrees,the water-wing nearly exists in the whole nappe flow,even continuing to the transition flow. The range of discharge of the water-wing decreases and the height of the water-wing increases with augmentation of the bottom slope of stepped spillways; the range of discharge and height of the water-wing decrease with decrease in step size.

关 键 词：台阶式溢洪道 水翅 跌落水流 过渡水流 

分 类 号：TV131.61[水利工程—水力学及河流动力学]