浅水环境中垂向圆形纯射流的试验研究  

An experimental study of vertical round jets in shallow water

作　　者：槐文信[1] 那宇彤[1] 黄纪忠[1] 童汉毅[1] 姜国强 

机构地区：[1]武汉大学河流工程系,湖北武汉430072

出　　处：《水科学进展》2002年第1期26-30,共5页Advances in Water Science

基　　金：国家自然科学基金项目 ( 5 98780 1 9) ;教育部骨干教师资助计划项目~~

摘　　要：对静止均匀浅水水域中的铅垂圆形单孔射流进行了试验研究 ,试验是在实验室的自制恒定水流循环系统中进行的。得到了水面的隆起高度与射流出口单位能量和相对水深的函数关系 ;验证了隆起高度分布具有自相似性 ,并给出其统一表达式 ;借助于三维测速仪 ,得到了射流流速的横断面分布、射流中线流速的衰减规律和流场的流函数等值线。This paper presents an experimental study of turbulent jets discharged vertically through a single circular submerged pipe into a large of stagnant non stratified water of finite depth The experiments were carried out in the laboratory facilities consisting of a closed system capable of maintaining steady state conditions The maximum water surface elevation is obtained for numerous flows, as function of jet energy flux and discharge depth The similarity of water surface elevation distribution was found, and its formula was got The distribution of velocity in cross section and the rate of change of centerline velocity were obtained by the micro ADV system

关 键 词：水环境 射流 时均结构 测速仪 试验 

分 类 号：X321[环境科学与工程—环境工程]