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A Comparative Study on Centrifugal Pump Designs and Two-Phase Flow Characteristic under Inlet Gas Entrainment Conditions

Author

Listed:
  • Qiaorui Si

    (National Research Center of Pumps, Jiangsu University, Zhenjiang 212013, Jiangsu, China)

  • Gérard Bois

    (LMFL, FRE CNRS 3723, Arts et Métiers ParisTech, 59046 Lille, Nord, France)

  • Minquan Liao

    (National Research Center of Pumps, Jiangsu University, Zhenjiang 212013, Jiangsu, China)

  • Haoyang Zhang

    (National Research Center of Pumps, Jiangsu University, Zhenjiang 212013, Jiangsu, China)

  • Qianglei Cui

    (National Research Center of Pumps, Jiangsu University, Zhenjiang 212013, Jiangsu, China)

  • Shouqi Yuan

    (National Research Center of Pumps, Jiangsu University, Zhenjiang 212013, Jiangsu, China)

Abstract

Capability for handling entrained gas is an important design consideration for centrifugal pumps used in petroleum, chemistry, nuclear applications. An experimental evaluation on their two phase performance is presented for two centrifugal pumps working under air-water mixture fluid conditions. The geometries of the two pumps are designed for the same flow rate and shut off head coefficient with the same impeller rotational speed. Overal pump performance and unsteady pressure pulsation information are obtained at different rotational speeds combined with various inlet air void fractions ( α 0 ) up to pump stop condition. As seen from the test results, pump 2 is able to deliver up to 10% two-phase mixtures before pump shut-off, whereas pump 1 is limited to 8%. In order to understand the physics of this flow phenomenon, a full three-dimensional unsteady Reynolds Average Navier-Stokes (3D-URANS) calculation using the Euler–Euler inhomogeneous method are carried out to study the two phase flow characteristics of the model pump after corresponding experimental verification. The internal flow characteristics inside the impeller and volute are physically described using the obtained air distribution, velocity streamline, vortex pattern and pressure pulsation results under different flow rates and inlet void fractions. Pump performances would deteriorate during pumping two-phase mixture fluid compared with single flow conditions due to the phase separating effect. Some physical explanation about performance improvements on handing maximum acceptable inlet two phase void fractions capability of centrifugal pumps are given.

Suggested Citation

  • Qiaorui Si & Gérard Bois & Minquan Liao & Haoyang Zhang & Qianglei Cui & Shouqi Yuan, 2019. "A Comparative Study on Centrifugal Pump Designs and Two-Phase Flow Characteristic under Inlet Gas Entrainment Conditions," Energies, MDPI, vol. 13(1), pages 1-25, December.
    • Handle: RePEc:gam:jeners:v:13:y:2019:i:1:p:65-:d:300658
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    References listed on IDEAS

    as
    1. Qifeng Jiang & Yaguang Heng & Xiaobing Liu & Weibin Zhang & Gérard Bois & Qiaorui Si, 2019. "A Review of Design Considerations of Centrifugal Pump Capability for Handling Inlet Gas-Liquid Two-Phase Flows," Energies, MDPI, vol. 12(6), pages 1-18, March.
    2. Qiaorui Si & Haoyang Zhang & Gérard Bois & Jinfeng Zhang & Qianglei Cui & Shouqi Yuan, 2019. "Experimental Investigations on the Inner Flow Behavior of Centrifugal Pumps under Inlet Air-Water Two-Phase Conditions," Energies, MDPI, vol. 12(22), pages 1-14, November.
    3. Jianjun Zhu & Hong-Quan Zhang, 2018. "A Review of Experiments and Modeling of Gas-Liquid Flow in Electrical Submersible Pumps," Energies, MDPI, vol. 11(1), pages 1-41, January.
    4. Qiaorui Si & Gérard Bois & Qifeng Jiang & Wenting He & Asad Ali & Shouqi Yuan, 2018. "Investigation on the Handling Ability of Centrifugal Pumps under Air–Water Two-Phase Inflow: Model and Experimental Validation," Energies, MDPI, vol. 11(11), pages 1-17, November.
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    Cited by:

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    2. Shamsuddeen, Mohamed Murshid & Ma, Sang-Bum & Park, No-Hyun & Kim, Kyung Min & Kim, Jin-Hyuk, 2023. "Design analysis and optimization of a hydraulic gate turbine for power production from ultra-low head sites," Energy, Elsevier, vol. 275(C).
    3. Qing Guo & Kai Luo & Daijin Li & Chuang Huang & Kan Qin, 2021. "Effect of Operating Conditions on the Performance of Gas–Liquid Mixture Roots Pumps," Energies, MDPI, vol. 14(17), pages 1-23, August.
    4. Wenpeng Zhang & Fangping Tang & Lijian Shi & Qiujin Hu & Ying Zhou, 2020. "Effects of an Inlet Vortex on the Performance of an Axial-Flow Pump," Energies, MDPI, vol. 13(11), pages 1-23, June.

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