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혼류 펌프의 성능 해석

Performance prediction of mixed-flow pumps

  • 오형우 (한국과학기술원 기계공학과) ;
  • 윤의수 (한국기계연구원) ;
  • 정명균 (한국과학기술원 기계공학과) ;
  • 하진수 (현대중공업 엔진 사업본부)
  • 발행 : 1998.01.01

초록

The present study has tested semi-empirical loss models for a reliable performance prediction of mixed-flow pumps with four different specific speeds. In order to improve the predictive capabilities, this paper recommends a new internal loss model and a modified parasitic loss model. The prediction method presented here is also compared with that based on two-dimensional cascade theory. Predicted performance curves by the proposed set of loss models agree fairly well with experimental data for a variety of mixed-flow pumps in the normal operating range, but further studies considering 'droop-like' head performance characteristic due to flow reversal in mixed-flow impellers at low flow range near shut-off head are needed.

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