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

  • 제28권10호
  • /
  • Pages.1247-1254
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  • 2004
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  • 1226-4881(pISSN)
  • /
  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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비압축성 재생형 기계에 대한 개선된 운동량 교환 이론 (II) - 손실 모델 및 성능 예측 -

Improved Momentum Exchange Theory for Incompressible Regenerative Turbomachines (II) - Loss Model and Performance Prediction -

  • 박무룡 (한국기계연구원 열유체공정기술연구부) ;
  • 정명균 (한국과학기술원 기계공학과) ;
  • 유일수 (한국과학기술원 대학원 기계공학과)
  • 발행 : 2004.10.01
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초록

In momentum exchange theory the loss models for the circulatory flow is critically important. But because of lack of loss model on the circulatory flow, analysis model on regenerative turbomachines is not available in the open literature. In the present study circulatory loss is evaluated by combining bend's losses. Through the comparison with the previous experimental data on linear pressure gradient, a combination factor is suggested in terms of the aspect ratio of a channel. Applying this factor to two kinds of regenerative blowers the predicted results are found to be in good agreement with the experimental data of the overall performance and the head distribution along the rotational direction. Especially, the comparison with the head distribution demonstrates the accuracy of hydraulic model and loss model suggested in the present study. And the comparison with the overall performance confirms the validness of physical models as well as loss models suggested in the present study.

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참고문헌

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  2. Senoo, Y., 1956, 'A Comparisons of Regenerative Pump Theories Supported by New Performance Data,' Trans. of the ASME, Vol. 78, pp. 1091-1102
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