跌扩型底流消能工坎后立轴漩涡水力特性分析  

Research on Hydraulic Characteristics of Vertical Vortexes behind Sills of Energy Dissipaters with the Step-down Floor

作　　者：毛舒娅[1] 张强 王立辉 王海军[1] 

机构地区：[1]昆明理工大学电力工程学院,昆明650051 [2]昆明市水利水电勘测设计院,昆明650051 [3]云南省水利水电学校,昆明650202

出　　处：《中国农村水利水电》2010年第11期107-110,共4页China Rural Water and Hydropower

基　　金：云南省自然科学基金项目(2006A0018M)

摘　　要：跌扩型底流消能工坎后立轴漩涡直接影响消力池内的水力学指标。采用水力学试验方法,对跌扩型底流消能工坎后立轴漩涡水力特性进行初步研究。详细分析了立轴漩涡的运动形式以及运动区域的变化,并对漩涡与底板和边墙切点处流速的变化、漩涡区相对于消力池整体压力的变化情况进行了研究。经试验知,立轴漩涡对消力池内水力学指标影响较大。The vertical vortex of falling-sill bottom-flow dissipation affects directly the hydraulic index of the energy dissipation pool.The hydraulic characteristics of vertical vortex behind the sill of the dissipater with the hydraulic test is studied.And the form of transverse vortex and the change of its movement area are also analyzed,and then a preliminary study is made of the velocity changes at the shearing points between the vortex and bottom,the vortex and the sill.Besides,the changes of the vortex region related to the integral pressure of the baffle basin are studied.The results show that the vertical vortex have effect on the hydraulic index of the energy dissipation.

关 键 词：跌扩型底流消能工 立轴漩涡 水力特性 流速分布 压力分布 

分 类 号：TV135[水利工程—水力学及河流动力学]