摘要
对有掺气分流墩和无掺气分流墩的阶梯溢流坝面流场进行了对比试验研究。通过对压力、掺气浓度和消能效果等的分析和讨论 ,得出了掺气分流墩的增设将消除或降低阶梯凹角内和立面上的负压 ,显著增加了坝面水流的掺气量和掺气范围并提高了阶梯坝面消能率等重要结论。
By means of hydraulic model investigation of stepped spillway with and without aerated splitter pier,we analyzed and discussed their pressure,air concentration and energy dissipation efficiency.It is concluded that the negative pressure on the nook of step and the upside of upright surface of step is eliminated and reduced,air concentration and aeration zone in the flow and energy dissipation efficiency of stepped spillway is increased.In order to attain high energy dissipation and avoid cavitations on stepped spillway on the large discharge per unit width conditions,we do some significant experiments.
出处
《四川水力发电》
2002年第1期94-96,共3页
Sichuan Hydropower
基金
国家自然科学基金
高速水力学国家重点实验室开放基金资助项目 (编号 :5 98790 13 )
关键词
分流墩
阶梯式溢流坝
掺气浓度
消能率
水工模型试验
aerated splitter pier
stepped spillway
air concentration
energy dissipation efficiency
hydraulic model investigation
