ARTICLE
Vibration transients of reservoir-pipe-valve system caused by water hammer
Yang Miao 1, 2,   Yuncheng Jiang 1,   Zaihui Qiu 1,   Jun Pan 3,   Lu Wang 3,   Zhenrong Han 3,   Kun Li 4,   Li Zhang 4,   Xiaolu Zhang 1  
 
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1
College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, China
2
Beijing Key Laboratory of Advanced Manufacturing Technology, Beijing University of Technology, Beijing, China
3
Nanjing Electromechanical Hydraulic Engineering Center, Nanjing, China
4
China Nuclear Power Technology Research Institute Co., Ltd., Shenzhen, China
CORRESPONDING AUTHOR
Xiaolu Zhang   

College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, China
Submission date: 2020-01-03
Final revision date: 2020-04-23
Acceptance date: 2020-04-23
Online publication date: 2020-10-15
Publication date: 2020-10-15
 
Journal of Theoretical and Applied Mechanics 2020;58(4):1037–1048
 
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ABSTRACT
A severe oscillation, accompanied with an abnormal “click” sound, of a fuel feeding pipe system during valve closing, when the feeding flowrate reaches a certain value, is observed experimentally. A fluctuation model in which stiffness and damping coefficients of the vibration system are time varying is proposed. Each coefficient is composed of two parts, one of which is constant and the other is time varying. Based on this model, simulation transients of the vibration displacement, velocity and pressure in the pipe are presented. Simulations of the pressure transients are compared with experimental data detected by pressure transducer, which shows that both have fluctuations in the transient process at a large flowrate.
 
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