长江科学院院报2017，Vol.34Issue(4)：48-51,4.DOI:10.11988/ckyyb.20160088
突扩式水跃跃长的计算公式推导与验证
Deduction and Verification of the Calculation Foumula for Length of Abruptly Expanding Hydraulic Jump
傅铭焕 1卢志男 1惠祥明 1郑艳 1孙培学1
作者信息
- 1. 浙江省水利水电勘测设计院,杭州 310002
- 折叠
摘要
Abstract
As an important parameter for the design of abruptly expanding stilling basin,length of hydraulic jump has remarkable effect on the safety,stability and economy of the stilling basin.The variation of length of hydraulic jump in abruptly expanding stilling basin was researched through establishing motion equations of flow particle in hydraulic jump zone.Furthermore,a half-theoretical formula for the hydraulic jump length was put forward and measured data from existed literatures was employed to verify the formula.Result shows that the length of hydraulic jump is the function of four parameters,namely upstream Froude number,upstream mean flow depth,conjugate water depth ratio and abrupt enlargement ratio.With the increase of the four parameters,the length of hydraulic jump increases.The mean error of length of hydraulic jump calculated by the proposed equation is 4.32％.Among 48 working conditions of five patterns,the relative errors of only five conditions exceed 10％,with the maximum value of-12.5％.关键词
突扩式消力池/突扩比/运动方程/水跃跃长/计算公式Key words
abruptly expanding stilling basin/abrupt enlargement ratio/motion equations/hydraulic jump length/calculation foumula分类
建筑与水利引用本文复制引用
傅铭焕,卢志男,惠祥明,郑艳,孙培学..突扩式水跃跃长的计算公式推导与验证[J].长江科学院院报,2017,34(4):48-51,4.
