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A Study Comparing the Subsurface Vortex Characteristics in Pump Sumps

Author

Listed:
  • Sangyoon Kim

    (Department of Mechanical Engineering, Graduate School, Korea Maritime and Ocean University, 727, Taejong-ro, Yeongdo-gu, Busan 49112, Korea
    High Turbo Machinery (HTM) Co., 2, Busandaehak-ro, 63beon-gil, Geumjeong-gu, Busan 46241, Korea)

  • Changgu Kim

    (Flowithus Co., Ltd., 107, Gwahaksandan 1-ro, Gangseo-gu, Busan 46742, Korea)

  • Byungha Kim

    (Flowithus Co., Ltd., 107, Gwahaksandan 1-ro, Gangseo-gu, Busan 46742, Korea)

  • Hyunjun Jang

    (High Turbo Machinery (HTM) Co., 2, Busandaehak-ro, 63beon-gil, Geumjeong-gu, Busan 46241, Korea
    Department of Mechanical Engineering, Pusan National University, Busan 43241, Korea)

  • Incheol Kim

    (Green Energy Institute, 177, Samhyangcheon-ro, Mokpo City 58656, Korea)

  • Young-Ho Lee

    (Division of Mechanical Engineering, Korea Maritime and Ocean University, 727, Taejong-ro, Yeongdo-gu, Busan 49112, Korea)

Abstract

The vortex generated around the suction region of the pump sump causes problems such as damage to the pump, increased maintenance costs, and failure to supply coolant smoothly. Therefore, analyzing vortices is essential in pump sump design. However, the CFD analysis alone is insufficient in pump sumps vortex analysis since the reliability of the results is doubtful in scaled model tests. This study conducted the model test to validate a suitable CFD simulation method by identifying the Type 2 vortex among the three types of subsurface vortices. The dye test and PIV technology were used to visualize the Type 2 subsurface vortices, whereas the PIV vorticity results were then compared to the CFD results. The average vorticity of 60.2 (1/s) was identified as the reference level of Type 2 subsurface vortices formation by mapping the dye test results with the PIV vorticity results. Furthermore, the average vorticities of 84.63 (1/s) and 85.15 (1/s) were recorded in the presence of Type 2 subsurface vortices in PIV and CFD, respectively, and these values can be applied to the designing of pump sumps.

Suggested Citation

  • Sangyoon Kim & Changgu Kim & Byungha Kim & Hyunjun Jang & Incheol Kim & Young-Ho Lee, 2022. "A Study Comparing the Subsurface Vortex Characteristics in Pump Sumps," Energies, MDPI, vol. 15(14), pages 1-12, July.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:14:p:5049-:d:860296
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    References listed on IDEAS

    as
    1. Miao Guo & Zhigang Zuo & Shuhong Liu & Huijun Zou & Baoyu Chen & Deyou Li, 2020. "Experimental Vortex Flow Patterns in the Primary and Secondary Pump Intakes of a Model Underground Pumping Station," Energies, MDPI, vol. 13(7), pages 1-20, April.
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    3. Virgel M. Arocena & Binoe E. Abuan & Joseph Gerard T. Reyes & Paul L. Rodgers & Louis Angelo M. Danao, 2021. "Numerical Investigation of the Performance of a Submersible Pump: Prediction of Recirculation, Vortex Formation, and Swirl Resulting from Off-Design Operating Conditions," Energies, MDPI, vol. 14(16), pages 1-21, August.
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