Dynamic interaction between valve-closure water hammer wave and centrifugal pump

Author:

Zhang Wenqi1ORCID,Yang Shuai1,Wu Dazhuan12ORCID,Xu Zhongtian1

Affiliation:

1. College of Energy Engineering, Zhejiang University, Hangzhou, China

2. State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou, China

Abstract

Water hammer is a principal cause of pipeline and equipment failure in pumping systems. The numerical method and experiments are used to investigate the dynamic interaction between the valve-closure water hammer wave and pump, to study the pressure variation and fluid-induced force on the pump components. The impeller-volute interaction and impeller position are taken into consideration. Results show that the valve-closure water hammer wave generates a substantial fluid-induced force on the pump and leads to a pressure surge in the pipeline. Meanwhile, the impeller-volute interaction also causes pressure and force variation in the pipeline and pump. The force amplitude caused by this factor in the axial direction is similar to that caused by the water hammer wave but is much smaller in the radial direction. The different interaction position of the water hammer wave on the blades can weaken the force, by 13.11% and 13.18% for the impeller and volute when the blades are under the most optimal position, respectively.

Publisher

SAGE Publications

Subject

Mechanical Engineering

Reference22 articles.

1. A Review of Water Hammer Theory and Practice

2. Bergant A, Tijsseling A, Vítkovský JP, et al. Further investigation of parameters affecting water hammer wave attenuation, shape and timing. Part 1: mathematical tools. In: 11th international meeting of the working group on the behaviour of hydraulic machinery under steady oscillatory conditions, Stuttgart, Germany, 8–10 October 2003.

3. Bergant A, Tijsseling A, Vítkovský JP, et al. Further investigation of parameters affecting water hammer wave attenuation, shape and timing. Part 2: case studies. In: 11th international meeting of the working group on the behaviour of hydraulic machinery under steady oscillatory conditions, Stuttgart, Germany, 8–10 October 2003.

4. Fluid–structure interaction with pipe-wall viscoelasticity during water hammer

5. Fluid dynamic interaction between water hammer and centrifugal pumps

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