The effects of a rotor–stator interface model on the hydraulic and suction performance of a single-stage centrifugal pump have been evaluated. A three-dimensional Reynolds-averaged Navier–Stokes (RANS) analysis was performed using the shear-stress transport turbulence model. The cavitating flow was simulated using a homogeneous two-phase mixture model and a simplified Rayleigh–Plesset cavitation model. Three performance parameters were selected to compare different cases: the hydraulic efficiency, head coefficient, and critical cavitation number for a head-drop of 3%. Frozen-rotor and stage models were evaluated for the rotor–stator interface. The evaluation was done using three different computational domains: one with a single passage of the impeller with a vaneless diffuser, one with a single passage of the impeller with the whole shape of volute casing, and another with the whole passage of the impeller with the whole shape of volute casing. Two different volute shapes were also tested. The results show that it is desirable to use the whole domain of the impeller and volute with the frozen-rotor model for accurate prediction of the suction performance. The stage model is not recommended for the prediction of the suction performance of the centrifugal pump with the volute in severe off-design conditions.
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November 2019
Research-Article
Evaluation of Rotor–Stator Interface Models for the Prediction of the Hydraulic and Suction Performance of a Centrifugal Pump
Hyeon-Seok Shim,
Hyeon-Seok Shim
Department of Mechanical Engineering,
Inha University,
100 Inha-Ro,
Incheon, Michuhol-Gu 22212, South Korea
e-mail: shs_8341@inha.edu
Inha University,
100 Inha-Ro,
Incheon, Michuhol-Gu 22212, South Korea
e-mail: shs_8341@inha.edu
Search for other works by this author on:
Kwang-Yong Kim
Kwang-Yong Kim
Fellow ASME
Department of Mechanical Engineering,
Inha University,
100 Inha-Ro,
Incheon, Michuhol-Gu 22212, South Korea
e-mail: kykim@inha.ac.kr
Department of Mechanical Engineering,
Inha University,
100 Inha-Ro,
Incheon, Michuhol-Gu 22212, South Korea
e-mail: kykim@inha.ac.kr
1Corresponding author.
Search for other works by this author on:
Hyeon-Seok Shim
Department of Mechanical Engineering,
Inha University,
100 Inha-Ro,
Incheon, Michuhol-Gu 22212, South Korea
e-mail: shs_8341@inha.edu
Inha University,
100 Inha-Ro,
Incheon, Michuhol-Gu 22212, South Korea
e-mail: shs_8341@inha.edu
Kwang-Yong Kim
Fellow ASME
Department of Mechanical Engineering,
Inha University,
100 Inha-Ro,
Incheon, Michuhol-Gu 22212, South Korea
e-mail: kykim@inha.ac.kr
Department of Mechanical Engineering,
Inha University,
100 Inha-Ro,
Incheon, Michuhol-Gu 22212, South Korea
e-mail: kykim@inha.ac.kr
1Corresponding author.
Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received January 4, 2019; final manuscript received March 18, 2019; published online May 8, 2019. Assoc. Editor: Philipp Epple.
J. Fluids Eng. Nov 2019, 141(11): 111106 (13 pages)
Published Online: May 8, 2019
Article history
Received:
January 4, 2019
Revised:
March 18, 2019
Citation
Shim, H., and Kim, K. (May 8, 2019). "Evaluation of Rotor–Stator Interface Models for the Prediction of the Hydraulic and Suction Performance of a Centrifugal Pump." ASME. J. Fluids Eng. November 2019; 141(11): 111106. https://doi.org/10.1115/1.4043272
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