Journal of Mechanical Science and Technology

, Volume 31, Issue 4, pp 1693–1700 | Cite as

A study of the performance of a radial diffuser for a multistage high-pressure pump

  • Deok Su Kim
  • Sanjar Mamatov
  • Sang Gyu Jeon
  • Warn Gyu Park


In this study, a high-pressure multistage pump used in combined cycle power plants is analyzed. The pump performance characteristics (differential head and efficiency) are numerically analyzed for different shapes of the radial diffuser. The design variables selected for the radial diffuser are number of vanes, diameter ratio (D4/D3), return channel outlet angel (α6), and pressure recovery factor (Cp). The numerical analysis results showed that the differential head and efficiency are the highest when the diameter ratio is the highest. Further, it was observed that the differential head was lower when the return channel outlet angle was 60° than when it was 90°, because of preswirl at the diffuser outlet.


High-pressure multistage pump Impeller Radial diffuser Return channel BFP CFD 


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  1. [1]
    I. S. Yoo, M. R. Park, S. C. Hwang, S. K. Kim and E. S. Yoon, Development of vertical barrel type multistage pump, Journal of Fluid Machinery, 15 (1) (2012) 13–20.CrossRefGoogle Scholar
  2. [2]
    H. W. Woo, Hydrodynamic characteristics of vaned-diffuser and return-channel for a multistage centrifugal pump, Journal of Fluid Machinery, 14 (6) 54-60.Google Scholar
  3. [3]
    T. K. Miyano, Return vane installed multistage centrifugal pump, International Journal of Fluid Machinery and Systems, 1 (1) (2008).Google Scholar
  4. [4]
    H. Roclawski, Numerical simulation of a radial multistage centrifugal pump, American Institute of Aeronautics and Astronautics (2006).CrossRefGoogle Scholar
  5. [5]
    N. L. R. Carrier, G. D. Ngoma and W. Ghiei, Numerical investigation of a first stage of a multistage centrifugal pump: impeller, diffuser with return vanes and casing, Hindawi Publishing Corporation ISRN Mechanical Engineering (2013).Google Scholar
  6. [6]
    N. Tiwari, K. Kumar and D. Kumar, Analytical and experimental analysis of the high pressure boiler feed pump, International Conference on Innovations in Automation and Mechatronics Engineering (2016).Google Scholar
  7. [7]
    J. F. Gulich, Centrifugal Pumps (2010).Google Scholar

Copyright information

© The Korean Society of Mechanical Engineers and Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • Deok Su Kim
    • 1
  • Sanjar Mamatov
    • 1
  • Sang Gyu Jeon
    • 1
  • Warn Gyu Park
    • 2
  1. 1.Research and Development CenterHyosung Goodsprings, Inc.SeoulKorea
  2. 2.School of Mechanical EngineeringPusan National UniversityPusanKorea

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