琴键堰不同堰高泄流特性的数值模拟  

Numerical simulation study on discharge characteristics of piano-key weir with various heights

作　　者：李珊珊[1] 李国栋[1] 苗洲 陈刚[1,2] 

机构地区：[1]西安理工大学西北旱区生态水利工程国家重点实验室培育基地,陕西西安710048 [2]安康学院,陕西安康725000

出　　处：《水利水电技术》2016年第5期60-64,共5页Water Resources and Hydropower Engineering

基　　金：中央财政支持地方高校发展专项资金项目(20130601);国家重点实验室培育基地自主研究项目(ZZKT-1);陕西省重点科技创新团队(2013KCT-15)

摘　　要：采用基于VOF自由面捕捉的全三维紊流数值模拟的方法,对琴键堰各个流量断面进行了泄流量的分析。通过比较五种不同堰高的琴键堰的泄流情况,分别从各个断面的流量所占的百分比、单宽流量和泄流效率等方面,得出了堰高对各断面的影响,从而得出了堰高越高泄流能力越强的结论,为今后的工程和研究提供参考。With the method of VOF free-surface capturing-based full 3- D numerical simulation of turbulence,the discharges from all the discharge-sections of the piano-key weir are analyzed herein. Through the comparison among the discharges from five piano-key weirs with different heights,the impacts from the weir heights on all the discharge-sections are obtained from the aspects of the percentages of the discharges from all the sections,uinit-width discharges,discharge efficiencies,etc. respectively,thus it is concluded that the higher the weir height is,the stronger the discharge capcity is to be,and then a basis is laid for the study and construction of the relevant project.

关 键 词：琴键堰 泄流能力 数值模拟 堰高 

分 类 号：TV132[水利工程—水力学及河流动力学]