Water Science and Engineering 2010, 3(2) 174-189 DOI:     ISSN: 1674-2370 CN: 32-1785/TV

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throttled surge chamber
water hammer
analytical formula
ZHANG Yong-Liang
MU Meng-Fei
MA Ji-Meng
Article by Zhang,Y.L
Article by Mu,M.F
Article by Ma,J.M

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

Yong-liang ZHANG*, Ming-fei MIAO, Ji-ming MA

State Key Laboratory of Hydroscience and Hydraulic Engineering, Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, P. R. China


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.

Keywords throttled surge chamber   water hammer   orifice   analytical formula  
Received 2010-06-25 Revised  Online: 2010-06-25 
Corresponding Authors: Yong-liang ZHANG
Email: yongliangzhang@mail.tsinghua.edu.cn
About author:


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