대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)

  • 제24권3호
  • /
  • Pages.411-418
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  • 2000
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  • 1226-4881(pISSN)
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  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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遠心 임펠러의 相對 渦流 크기 모델에 根據한 이론적인 미끄럼 係數

An Analytical Slip Factor Based on a Relative Eddy Size Model for Centrifugal Impellers

  • 팽기석 (한국과학기술원 대학원 기계공학과) ;
  • 정명균 (한국과학기술원 기계공학과)
  • 발행 : 2000.03.01
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초록

By calculating the location and size of the relative eddy formed in the rotating impellers with the logarithmic spiral vanes, a new simple but accurate slip factor is analytically derived. The proposed slip factor depends on only one parameter that is a function of the number of vanes and the vane exit angle. Predicted slip factor for various cases are compared with those estimated by a number of previous slip factors as well as a recent theoretical calculation by Visser et al. ( JFM, Vol. 268, pp. 107-141, 1994). It is found that the present slip factor yields almost similar results to Wiesner's which has been empirically formulated based on the theoretical calculation of Busemann.

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참고문헌

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