Cavity flow regime for spillway aerators  

作　　者：WU JianHua MA Fei 

机构地区：[1]College of Water Conservancy and Hydropower Engineering,Hohai University

出　　处：《Science China(Technological Sciences)》2013年第4期818-823,共6页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 51179114);the Innovative Project of Graduate Student in Jiangsu Province (Grant No. CXLX11_0443)

摘　　要：It is well known that the effect of air entrainment for cavitation damage controls is related not only to the air discharge into aerator devices but also the flow regime of the cavity below them.On the basis of the hydraulic characteristics of the flow,the aerator devices were for the first time classified.The theoretical considerations were performed about the jet length and cavity flow regime with the influencing factors.Comparing with the behavior of the flow through the aerator of discharge tunnels,the flow regimes of the cavity below spillway aerators were experimentally investigated,and the empirical expressions were presented to identify the conversions of the cavity flow regimes,including fully filled cavity,partially filled cavity,and net air cavity.Some issues of the design of the aerator devices were suggested in the present work.

关 键 词：AERATOR air entrainment CAVITY discharge tunnel flow regime SPILLWAY 

分 类 号：TV651.1[水利工程—水利水电工程] TV131.3