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Numerical simulation and analysis of solid-liquid two-phase three-dimensional unsteady flow in centrifugal slurry pump

Journal of Central South University volume 22, pages 3008–3016 (2015)Cite this article

Abstract

Based on RNG k-ε turbulence model and sliding grid technique, solid-liquid two-phase three-dimensional (3-D) unsteady turbulence of full passage in slurry pump was simulated by means of Fluent software. The effects of unsteady flow characteristics on solid-liquid two-phase flow and pump performance were researched under design condition. The results show that clocking effect has a significant influence on the flow in pump, and the fluctuation of flow velocity and pressure is obvious, particularly near the volute tongue, at the position of small sections of volute and within diffuser. Clocking effect has a more influence on liquid-phase than on solid-phase, and the wake-jet structure of relative velocity of solid-phase is less obvious than liquid-phase near the volute tongue and the impeller passage outlet. The fluctuation of relative velocity of solid-phase flow is 7.6% smaller than liquid-phase flow at the impeller outlet on circular path. Head and radial forces of the impeller are 8.1% and 85.7% of fluctuation, respectively. The results provide a theoretical basis for further research for turbulence, improving efficient, reducing the hydraulic losses and wear. Finally, field tests were carried out to verify the operation and wear of slurry pump.

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Authors and Affiliations

  1. School of Mechanical and Electrical Engineering, Central South University, Changsha, 410083, China

    Bo Wu  (吴波), Xi-li Wang  (汪西力) & Hai-liang Xu  (徐海良)

  2. Department of Computer Science, Missouri State University, Springfield, MO, 65897, USA

    Hui Liu

Authors
  1. Bo Wu  (吴波)
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  2. Xi-li Wang  (汪西力)
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  3. Hui Liu
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  4. Hai-liang Xu  (徐海良)
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Corresponding author

Correspondence to Bo Wu  (吴波).

Additional information

Foundation item: Project(51375498) supported by the National Natural Science Foundation of China

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Wu, B., Wang, Xl., Liu, H. et al. Numerical simulation and analysis of solid-liquid two-phase three-dimensional unsteady flow in centrifugal slurry pump. J. Cent. South Univ. 22, 3008–3016 (2015). https://doi.org/10.1007/s11771-015-2837-7

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  • DOI: https://doi.org/10.1007/s11771-015-2837-7

Keywords

  • slurry pump
  • solid-liquid two-phase flow
  • unsteady flow
  • 3-D full passage
  • numerical simulation