掺气分流墩台阶式溢洪道的水流流态和流速特性  

Water Flow Regime and Flow Velocity Behaviors in Stepped Spillways with Aerated Piers

作　　者：郑阿漫[1] 张志昌[1] 杨永全[2] 刘亚菲[1] 戴光晴[2] 

机构地区：[1]西安理工大学水利水电学院,陕西西安710048 [2]四川大学

出　　处：《西安理工大学学报》2002年第1期71-75,共5页Journal of Xi'an University of Technology

基　　金：四川大学高速水力学国家重点实验室资助项目 (991 1

摘　　要：通过模型试验 ,研究了掺气分流墩台阶式溢洪道的水流流态和流速特性。结果表明 :此种消能工能改善台阶式溢洪道的水流流态 ,大幅度地减小水流流速。在试验范围内 ,掺气分流墩台阶式溢洪道的流速较相应光滑溢洪道减小了 1 8.4%～ 68.3 % ,较相应的台阶式溢洪道降低了 6.9%～ 54.0 %。Water flow regime and flow velocity behaviors in stepped spillways with aerated piers are studied via the model tests.The results indicate that this kind of energy dissipation function can improve the water flow regime in the stepped spillways and reduce the flow velocity by a wide margin.Within the range of model tests,the flow velocity in the stepped spillways with aerated piers was reduced by 18.4%～68.3% in comparison with that in the corresponding smooth spillways,and by 6.9%～54.0% in contrast with that in the corresponding stepped spillways.

关 键 词：掺气分流墩台阶式溢洪道 水流流态 流速 

分 类 号：TV131[水利工程—水力学及河流动力学]