한국전산유체공학회지 (Journal of computational fluids engineering)

한국전산유체공학회 (Korean Society of Computational Fluids Engineering)
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VOF기법을 이용한 원심펌프 내의 공동현상에 관한 유동해석

CAVITATION ANALYSIS IN A CENTRIFUGAL PUMP USING VOF METHOD

  • Lee, W.J. (Dept. of Mechanical Engineering, Sogang University) ;
  • Lee, J.H. (Dept. of Mechanical Engineering, Sogang University) ;
  • Hur, N. (Dept. of Mechanical Engineering, Sogang University) ;
  • Yoon, I.S. (Dooch Pump Co., R&D Center)
  • 투고 : 2015.05.29
  • 심사 : 2015.12.31
  • 발행 : 2015.12.31
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초록

Centrifugal pumps consume considerable amount of energy in various industrial applications. Therefore, improvement of the efficiency of these machines has become a major challenge. Cavitation is a phenomenon which decreases the pump efficiency and even causes structural demage. Hence, the goal of this paper is to investigate the cavitation problem in the single-stage and double-stage centrifugal pumps. The Volume of Fraction (VOF) method has been used for the numerical simulations together with Rayliegh-Plesset model for the gas-liquid two-phase flow inside the pump. In order to capture the turbulent phenomena, the standard k-${\varepsilon}$ turbulence model has been adopted, and the simulations have been done as unsteady cases. In addition, the motion of the rotating parts has been simulated using Multi Reference Frame(MRF) method. The results are presented and compared in terms of hydraulic head and NPSH for both the single-stage and double-stage pumps. The H-Q curves show the effects of cavitation on decreasing the pumps performances.

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참고문헌

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피인용 문헌

  1. 실험과 해석을 통한 기포저감 시스템의 개발에 대한 연구 vol.12, pp.3, 2015, https://doi.org/10.15207/jkcs.2021.12.3.197