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Performance and internal flow pattern analyses of a specific centrifugal disc pump under air-water two-phase flow conditions

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  • Heng, Yaguang
  • Chen, Zhengsu
  • Jiang, Qifeng
  • Bois, Gérard
  • Zhang, Weibin
  • He, Kunjian

Abstract

Centrifugal pumps are the main energy-consuming equipment in many fields, their efficiency always sharply decreases until shut down under gas-liquid flow conditions. In the present study, a specific centrifugal pump design is experimentally investigated under two-phase conditions. The experimental results show that such a pump design is characterized by a good ability to pump air-water two-phase mixtures without shutdown up to an inlet gas volume fraction (IGVF) of 26 %, a value which cannot be reached by conventional designs. The head and efficiency degradation ratios remain almost constant up to an IGVF of 9 % and decrease quasi-linearly up to an IGVF of 20 %. Based on computational fluid dynamics (CFD) results, the gas was found to be concentrated mainly on the shroud side, and the gas volume fraction was quite low at the midspan and hub side. No strong gas blockage can be found even with a high IGVF of 15 %. The gas distribution has been analyzed in combination with the internal flow pattern which is quite different than that of conventional centrifugal pumps, and discussions have been presented to explain why the present disc pump is better at handling air-water two-phase flow mixtures.

Suggested Citation

  • Heng, Yaguang & Chen, Zhengsu & Jiang, Qifeng & Bois, Gérard & Zhang, Weibin & He, Kunjian, 2024. "Performance and internal flow pattern analyses of a specific centrifugal disc pump under air-water two-phase flow conditions," Energy, Elsevier, vol. 309(C).
    • Handle: RePEc:eee:energy:v:309:y:2024:i:c:s0360544224027555
    DOI: 10.1016/j.energy.2024.132981
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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. Wu, Chengshuo & Pu, Kexin & Li, Changqin & Wu, Peng & Huang, Bin & Wu, Dazhuan, 2022. "Blade redesign based on secondary flow suppression to improve energy efficiency of a centrifugal pump," Energy, Elsevier, vol. 246(C).
    3. Yaguang Heng & Yuming Han & Huiyu Zhang & Weibin Zhang & Gérard Bois & Qifeng Jiang & Zhengwei Wang & Xiaobing Liu, 2020. "Tesla Bladed Pump (Disc Bladed Pump) Preliminary Experimental Performance Analysis," Energies, MDPI, vol. 13(18), pages 1-13, September.
    4. Sina Yan & Shuaihui Sun & Xingqi Luo & Senlin Chen & Chenhao Li & Jianjun Feng, 2020. "Numerical Investigation on Bubble Distribution of a Multistage Centrifugal Pump Based on a Population Balance Model," Energies, MDPI, vol. 13(4), pages 1-15, February.
    5. Fernández Oro, J.M. & Barrio Perotti, R. & Galdo Vega, M. & González, J., 2023. "Effect of the radial gap size on the deterministic flow in a centrifugal pump due to impeller-tongue interactions," Energy, Elsevier, vol. 278(PA).
    6. Pei, Yingju & Liu, Qingyou & Wang, Chuan & Wang, Guorong, 2021. "Energy efficiency prediction model and energy characteristics of subsea disc pump based on velocity slip and similarity theory," Energy, Elsevier, vol. 229(C).
    7. Zhang, Liwen & Wang, Xin & Wu, Peng & Huang, Bin & Wu, Dazhuan, 2023. "Optimization of a centrifugal pump to improve hydraulic efficiency and reduce hydro-induced vibration," Energy, Elsevier, vol. 268(C).
    8. Lu, Yangping & Tan, Lei, 2024. "Design method based on a new slip-diffusion parameter of centrifugal pump for multiple conditions in wide operation region," Energy, Elsevier, vol. 294(C).
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