The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
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A Study on the Break-down Characteristics of a Screw-type Centrifugal Pump due to Air Entrainment

공기흡입에 의한 스크류식 원심펌프의 양수불능 특성에 관한 연구

  • 김유택 (한국해양대학교 해사대학 기관시스템공학부)
  • Published : 2003.09.01
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Abstract

The performance of turbo pump drops rapidly and it gets into break-down when the void fraction reaches above the threshold value because the impeller flow passage is choked up with air bubbles. Phenomenological understanding of break-down and pumping recovery mechanisms under air-water two-phase flow conditions are therefore important for pump designers and essential assignment for researchers. In this paper, we investigated the characteristics of break-down and pumping recovery due to entrained air occurring inside a screw-type centrifugal pump which has a wide flow passage mainly through the findings of suction and discharge pressures, rotational speed, flow rate measurements and visualization.

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References

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