跌坎式底流消能工水流特性分析  

Study on Flow Characteristics in Step-Down Floor for Energy Dissipation of Hydraulic Jump

作　　者：张强[1] 张建蓉[1] 周禹 

机构地区：[1]昆明理工大学电力工程学院,昆明650051 [2]云南省普洱市水务局,云南普洱665000

出　　处：《南水北调与水利科技》2008年第3期74-75,96,共3页South-to-North Water Transfers and Water Science & Technology

基　　金：云南省自然科学基金(2006A0018M);昆明理工大学研究生创新基金(YCC0745)

摘　　要：现对跌坎式底流消能工消力池内水流流态的演变进行了初步分析,随着入池能量的变化,消力池中会产生混合流、淹没混合流、淹没底流以及远驱底流流态。并对淹没底流流态下,消力池内的淹没射流区、附壁射流区内的流速分布采用射流力学理论进行了分析,得出了其流速分布公式。The flow pattern＇s evolvement of the stilling basin with step-down floor for energy dissipation of hydraulic jump is analyzed. With the change of in-take energy, the flow patterns in the stilling basin are：mixed flow, submerged mixed flow, submerged bottom floor and far-forth drove bottom floor. Under floor pattern of submerged bottom floor, the velocity distributions in the submerged jet region and attaching wall jet region of stilling basin are analyzed by the jet hydraulic theory, and the velocity distribution formulas are drawn.

关 键 词：跌坎 流态 淹没底流 流速 

分 类 号：TV135[水利工程—水力学及河流动力学]