한국유체기계학회 논문집 (The KSFM Journal of Fluid Machinery)

한국유체기계학회 (Korean Society for Fluid machinery)
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극저비속도 영역에서 임펠러 관련인자 변화에 따른 원심펌프 성능 평가

Performance Evaluation on Impeller Related Parameters Change in Centrifugal Pump of very Low Specific Speed

  • 정영대 (충북대학교 기계공학부) ;
  • 이계복 (충북대학교 기계공학부(산업과학기술연구소))
  • 투고 : 2010.08.18
  • 심사 : 2010.12.22
  • 발행 : 2011.02.01
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초록

The numerical study was conducted to investigate the pump performance due to impeller related parameters change in centrifugal pump of very low specific speed by using CFD code. A small centrifugal pump whose specific speed is $N_s=76.2$ was used, and the performance characteristics were discussed for different number of vanes, rotational speed, and the length and height of vane. The numerical results at a very low specific speed show that the increase of the number of vanes has little effect on improvement of output pressure but results in the reduction of pressure fluctuation, and that the head increases with the increase in the rotational speed. The decreasing the length of vane has a considerable reduction of the capacity coefficient in comparison with decreasing the height of vane.

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참고문헌

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