长江科学院院报 ›› 2001, Vol. 18 ›› Issue (1): 10-12.

• 水工水力学 • 上一篇    下一篇

水垫塘的水流特征和消能规律研究

 吕阳泉, 李永祥, 冬俊瑞   

  • 出版日期:2001-02-01 发布日期:2012-03-05

A Study on flow characteristics in water cushion pool \= and mechanism of energy dissipation

 Yang-Quan , LI  Yong-Xiang, DONG  Jun-Rui     

  • Online:2001-02-01 Published:2012-03-05

摘要: 结合乌江构皮滩水利枢纽工程消能问题研究,用热膜流速仪在比尺为1∶380的精细模型上量 测了拱坝挑跌流在水垫塘内的流速场,并由试验成果分析了淹没射流在水垫塘内的消能过程, 计算了消能率。研究表明,要想提高水垫塘的消能效率,就必须设法增大强紊动剪切层区的范 围。 

关键词: 水垫塘, 淹没射流, 热膜流速仪, 消能

Abstract:  Through study on energy dissipation of Goupitang Project on the Wujiang River ,the velocity field in the water cushion pool downstream skijump or drop was m e asured by hotfilm anemometers on a fine model with scale 1∶380. The energy di ssipation process in the water cushion pool was analysed using experimental res ults,and the rate of energy dissipation was calculated.The study showed tha t if a project requires to raise its rate of energy dissipation,the strong turbulent shear flow region must be extended. 