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Effects of gap between impeller and volute tongue on a pressure fluctuation in double-suction pump

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Abstract

The pump is a machine that receives power through a rotating shaft and converts the mechanical energy into pressure and kinetic energy of fluid. Therefore, it is widely used in various industrial fields, and many studies have been conducted to improve the performance of pumps. In this paper, the effect of the gap between the impeller and the volute tongue on the performance and pressure fluctuation of the double suction pump was investigated. Numerical analysis was conducted using the commercial code ANSYS CFX ver. 18.1. Three different values of gap between the impeller and the volute tongue, 0.067%, 0.145% and 0.224% of the impeller diameter were considered.

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Abbreviations

D 1 :

Inlet diameter of volute casing

D 2 :

Outlet diameter of volute casing

D 3 :

Inlet diameter of impeller

D 4 :

Outlet diameter of impeller

β 1 :

Inlet angle

β 2 :

Outlet angle

δ :

Gap between impeller tongue and casing

p :

Pressure

U :

Rotatinal velocity

ρ :

Density

t :

Time

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Acknowledgements

This research was supported by a grant (19IFIP-B089065-06) from the Plant R&D Program funded by the Ministry of Land, Infrastructure and Transport of the Korean Government.

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Authors and Affiliations

  1. Graduate School of Mechanical Engineering, Sungkyunkwan University, Suwon, 16419, Korea

    Jeong-Min Jin, Kuk Jin Jung & Yo-Hwan Kim

  2. School of Mechanical Engineering, Sungkyunkwan University, Suwon, 16419, Korea

    Youn-Jea Kim

Authors
  1. Jeong-Min Jin
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  2. Kuk Jin Jung
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  3. Yo-Hwan Kim
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  4. Youn-Jea Kim
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Correspondence to Youn-Jea Kim.

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J. M. Jin is currently pursuing his Master’s degree in Mechanical Engineering at Sungkyunkwan University since 2018. His major research interests are characteristics of fluid flow and computational fluid analysis.

K. J. Jung is currently pursuing his Master’s degree in Mechanical Engineering at Sungkyunkwan University since 2019. His major research interests are characteristics of improved efficiency in clean energy and power generation through flow analysis.

Y. H. Kim is currently pursuing his Master’s degree in Mechanical Engineering at Sungkyunkwan University since 2018. His major research interests are characteristics of fluid flow and computational fluid analysis.

Y. J. Kim is currently serving as Professor at the School of Mechanical Engineering, Sungkyunkwan University, Suwon, Korea. He received both his M.S. and Ph.D. in Mechanical Engineering from State University of New York at Buffalo in 1987 and 1990, respectively. Prof. Kim’s research interests include gas dynamics, MEMS, and fluid-machineries, etc.

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Jin, JM., Jung, K.J., Kim, YH. et al. Effects of gap between impeller and volute tongue on a pressure fluctuation in double-suction pump. J Mech Sci Technol 34, 4897–4903 (2020). https://doi.org/10.1007/s12206-020-2102-3

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  • DOI: https://doi.org/10.1007/s12206-020-2102-3

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