Analytical study on water hammer pressure in pressurized conduits with a throttled surge chamber for slow closure  

作　　者：Yong-liang ZHANG Ming-fei MIAO Ji-ming MA 

机构地区：[1]State Key Laboratory of Hydroscience and Hydraulic Engineering, Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, P. R. China

出　　处：《Water Science and Engineering》2010年第2期174-189,共16页水科学与水工程（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No.50539070);the Major State Basic Research Development Program of China (Grant No.2006CB403304)

摘　　要：This paper presents an analytical investigation of water hammer in a hydraulic pressurized pipe system with a throttled surge chamber located at the junction between a tunnel and a penstock, and a valve positioned at the downstream end of the penstock. Analytical formulas of maximum water hammer pressures at the downstream end of the tunnel and the valve were derived for a system subjected to linear and slow valve closure. The analytical results were then compared with numerical ones obtained using the method of characteristics. There is agreement between them. The formulas can be applied to estimating water hammer pressure at the valve and transmission of water hammer pressure through the surge chamber at the junction for a hydraulic pipe system with a surge chamber.

关 键 词：throttled surge chamber water hammer ORIFICE analytical formula 

分 类 号：TV134[水利工程—水力学及河流动力学] TE973.02[石油与天然气工程—石油机械设备]