阶梯溢流坝自掺气水流的数值模拟  

Numerical Simulation of Self-aerated Flows of Stepped Spillways

作　　者：刘晓川[1] 杨纪伟[1] 李书芳[1] 付晓丽[1] 

机构地区：[1]河北工程大学城市建设学院,河北邯郸056038

出　　处：《水利科技与经济》2008年第3期190-192,共3页Water Conservancy Science and Technology and Economy

摘　　要：从两相流基本方程出发,建立了适用于自掺气水流的数学模型,用明渠自掺气水流进行验证。应用此数学模型模拟计算了阶梯溢流坝面水气两相流的流速场、初始掺气点及消能率等参数,得出了初始掺气点的位置随流量的增加而下移,消能率随流量的增加而减小的结论。The characteristics of the air - water two - phase flow often occurred in hydraulic engineering are analysized in this paper based on the mathematical equation of the flow. Also calculated the parameters of stepped spillways, such as the air - water two - phase flow rate, the initial aerated points and energy dissipation rate and so on,demonstrated the decrease in energy dissipation ratio and the increase in aeration distance with the increase of discharge.

关 键 词：阶梯溢流坝 自掺气 k—ε模型 

分 类 号：TV322[水利工程—水工结构工程]