Open Access

ARTICLE

COMPARISON OF TRANSIENT CHARACTERISTICS OF A CENTRIFUGAL PUMP DURING FORWARD AND REVERSE STOPPING PERIODS

Y. L. Zhang^a , H. B. Lin^b, S. P. Li^b,*, J. J. Xiao^a, L. Zhang^c

a College of Mechanical Engineering, Quzhou University, Quzhou, Zhejiang, 324000, China
b College of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin, Heilongjiang, 150040, China
c Department of Application & Engineering, Zhejiang Institute of Economics and Trade, Hangzhou, Zhejiang, 310018, China
* Corresponding author. Email: lisanping73@nefu.edu.cn

Frontiers in Heat and Mass Transfer 2022, 18, 1-6. https://doi.org/10.5098/hmt.18.47

Abstract

Centrifugal pumps need to be stopped in the case of closing valve sometimes due to some specific application requirements. This paper presents a numerical simulation of the unsteady flow inside a low specific speed centrifugal pump during closed-valve forward and reverse stopping process. The study results show that the average internal pressure gradually decreases during stopping periods. At the same blade radius, the pressure on working surface is significantly higher than the suction surface. The pressure gradually increases from the impeller inlet to the outlet. The simulation fully shows the transient flow characteristics inside the centrifugal pump during forward and reverse stopping period.

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Keywords

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