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Energy Performance and Pressure Fluctuation of a Multiphase Pump with Different Gas Volume Fractions

Author

Listed:
  • Jinsong Zhang

    (State Key Laboratory of Hydroscience and Engineering, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)

  • Lei Tan

    (State Key Laboratory of Hydroscience and Engineering, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)

Abstract

Large petroleum resources in deep sea, and huge market demands for petroleum need advanced petroleum extraction technology. The multiphase pump, which can simultaneously transport oil and gas with considerable efficiency, has been a crucial technology in petroleum extraction. A numerical approach with mesh generation and a Navier-Stokes equation solution is employed to evaluate the effects of gas volume fraction on energy performance and pressure fluctuations of a multiphase pump. Good agreement of experimental and calculation results indicates that the numerical approach can accurately simulate the multiphase flow in pumps. The pressure rise of a pump decreases with the increasing of flow rate, and the pump efficiency decreases with the increasing of GVF (the ratio of the gas volume to the whole volume). Results show that the dominant frequencies of pressure fluctuation in the impeller and diffuser are eleven and three times those of the impeller rotational frequency, respectively. Due to the larger density of water and centrifugal forces, the water aggregates to the shroud and the gas gathers to the hub, which renders the distribution of GVF in the pump uneven. A vortex develops at the blade suction side, near the leading edge, induced by the leakage flow, and further affects the pressure fluctuation in the impeller. The obvious vortex in the diffuser indicates that the design of the divergence angle of the diffuser is not optimal, which induces flow separation due to large diffusion ratio. A uniform flow pattern in the impeller indicates good hydraulic performance of the pump.

Suggested Citation

  • Jinsong Zhang & Lei Tan, 2018. "Energy Performance and Pressure Fluctuation of a Multiphase Pump with Different Gas Volume Fractions," Energies, MDPI, vol. 11(5), pages 1-14, May.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:5:p:1216-:d:145566
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    References listed on IDEAS

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    1. Yabin Liu & Lei Tan & Yue Hao & Yun Xu, 2017. "Energy Performance and Flow Patterns of a Mixed-Flow Pump with Different Tip Clearance Sizes," Energies, MDPI, vol. 10(2), pages 1-15, February.
    2. Yabin Liu & Lei Tan & Ming Liu & Yue Hao & Yun Xu, 2017. "Influence of Prewhirl Angle and Axial Distance on Energy Performance and Pressure Fluctuation for a Centrifugal Pump with Inlet Guide Vanes," Energies, MDPI, vol. 10(5), pages 1-14, May.
    3. 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.
    4. Ming Liu & Lei Tan & Shuliang Cao, 2018. "Design Method of Controllable Blade Angle and Orthogonal Optimization of Pressure Rise for a Multiphase Pump," Energies, MDPI, vol. 11(5), pages 1-20, April.
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    Cited by:

    1. Liu, Ming & Tan, Lei & Cao, Shuliang, 2020. "Method of dynamic mode decomposition and reconstruction with application to a three-stage multiphase pump," Energy, Elsevier, vol. 208(C).
    2. Yun Xu & Shuliang Cao & Takeshi Sano & Tokiya Wakai & Martino Reclari, 2019. "Experimental Investigation on Transient Pressure Characteristics in a Helico-Axial Multiphase Pump," Energies, MDPI, vol. 12(3), pages 1-20, January.
    3. Honggang Fan & Jinsong Zhang & Wei Zhang & Bing Liu, 2020. "Multiparameter and Multiobjective Optimization Design Based on Orthogonal Method for Mixed Flow Fan," Energies, MDPI, vol. 13(11), pages 1-15, June.
    4. Wang, Zhiyuan & Qian, Zhongdong & Lu, Jie & Wu, Pengfei, 2019. "Effects of flow rate and rotational speed on pressure fluctuations in a double-suction centrifugal pump," Energy, Elsevier, vol. 170(C), pages 212-227.
    5. Weihua Sun & Zhiyi Yu & Wenwu Zhang, 2022. "Effect of Shear-Thinning Property on the Energy Performance and Flow Field of an Axial Flow Pump," Energies, MDPI, vol. 15(7), pages 1-15, March.
    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. Shi, Guangtai & Liu, Zongku & Xiao, Yexiang & Yang, Hong & Li, Helin & Liu, Xiaobing, 2020. "Effect of the inlet gas void fraction on the tip leakage vortex in a multiphase pump," Renewable Energy, Elsevier, vol. 150(C), pages 46-57.
    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.
    9. Shi, Guangtai & Liu, Zongku & Xiao, Yexiang & Li, Helin & Liu, Xiaobing, 2020. "Tip leakage vortex trajectory and dynamics in a multiphase pump at off-design condition," Renewable Energy, Elsevier, vol. 150(C), pages 703-711.

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