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Study of the Gas Distribution in a Multiphase Rotodynamic Pump Based on Interphase Force Analysis

Author

Listed:
  • Wenwu Zhang

    (School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China)

  • Zhiyi Yu

    (School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China)

  • Muhammad Noaman Zahid

    (School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China)

  • Yongjiang Li

    (School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China)

Abstract

The performance of multiphase pumps has a remarkable influence on the related industrial application. In order to understand the flow field and gas-liquid phase interaction characteristics of a multiphase rotodynamic pump, detailed numerical analysis of the pump with a medium of air-water combination was carried out for the whole flow passage by means of a structured mesh using ICEM_CFD and TurboGrid. The results for 21% inlet gas void fraction ( IGVF = 21%) condition showed that the magnitude ratio of non-drag forces to drag in impeller and guide vane passages was generally less than 1, whereas it was always less than 0.2 for the magnitude ratio of turbulent dispersion force to drag. When the IGVF was increased, the variation range of interphase forces in the impeller was greater than that in the guide vane. In addition, the gas in the impeller mainly accumulated near the suction surface in the outlet region. Further, with increased IGVF , the degree of aggregation increased as well as the gas inhomogeneity, and consequently the interphase forces in the impeller increased. Due to the divergent structure of the guide vane, obvious vortexes emerged at the hub and gradually moved toward the blade pressure surface along the streamwise direction.

Suggested Citation

  • Wenwu Zhang & Zhiyi Yu & Muhammad Noaman Zahid & Yongjiang Li, 2018. "Study of the Gas Distribution in a Multiphase Rotodynamic Pump Based on Interphase Force Analysis," Energies, MDPI, vol. 11(5), pages 1-16, April.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:5:p:1069-:d:143370
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    References listed on IDEAS

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    1. Wenwu Zhang & Zhiyi Yu & Baoshan Zhu, 2017. "Influence of Tip Clearance on Pressure Fluctuation in Low Specific Speed Mixed-Flow Pump Passage," Energies, MDPI, vol. 10(2), pages 1-16, January.
    2. Yue Hao & Lei Tan & Yabin Liu & Yun Xu & Jinsong Zhang & Baoshan Zhu, 2017. "Energy Performance and Radial Force of a Mixed-Flow Pump with Symmetrical and Unsymmetrical Tip Clearances," Energies, MDPI, vol. 10(1), pages 1-13, January.
    3. Jun-Won Suh & Jin-Woo Kim & Young-Seok Choi & Jin-Hyuk Kim & Won-Gu Joo & Kyoung-Yong Lee, 2017. "Multi-Objective Optimization of the Hydrodynamic Performance of the Second Stage of a Multi-Phase Pump," Energies, MDPI, vol. 10(9), pages 1-21, September.
    4. Wenwu Zhang & Zhiyi Yu & Baoshan Zhu, 2017. "Numerical Study of Pressure Fluctuation in a Gas- Liquid Two-Phase Mixed-Flow Pump," Energies, MDPI, vol. 10(5), pages 1-14, May.
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    Citations

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    Cited by:

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    3. Zhe Ma & Baoshan Zhu & Cong Rao & Yonghong Shangguan, 2019. "Comprehensive Hydraulic Improvement and Parametric Analysis of a Francis Turbine Runner," Energies, MDPI, vol. 12(2), pages 1-20, January.
    4. Zhang, Wenwu & Xie, Xing & Zhu, Baoshan & Ma, Zhe, 2021. "Analysis of phase interaction and gas holdup in a multistage multiphase rotodynamic pump based on a modified Euler two-fluid model," Renewable Energy, Elsevier, vol. 164(C), pages 1496-1507.
    5. Shuaihui Sun & Pei Ren & Pengcheng Guo & Longgang Sun & Xiaobo Zheng, 2022. "Influence of the Gas Model on the Performance and Flow Field Prediction of a Gas–Liquid Two-Phase Hydraulic Turbine," Energies, MDPI, vol. 15(17), pages 1-18, August.
    6. Liu, Ming & Tan, Lei & Cao, Shuliang, 2019. "Dynamic mode decomposition of gas-liquid flow in a rotodynamic multiphase pump," Renewable Energy, Elsevier, vol. 139(C), pages 1159-1175.
    7. Wang, Cong & Zhang, Yongxue & Yuan, Zhiyi & Ji, Kaizhuo, 2020. "Development and application of the entropy production diagnostic model to the cavitation flow of a pump-turbine in pump mode," Renewable Energy, Elsevier, vol. 154(C), pages 774-785.
    8. Liu, Ming & Tan, Lei & Cao, Shuliang, 2020. "Influence of viscosity on energy performance and flow field of a multiphase pump," Renewable Energy, Elsevier, vol. 162(C), pages 1151-1160.

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