대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)
- 제22권1호
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- Pages.70-78
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- 1998
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- 1226-4881(pISSN)
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- 2288-5324(eISSN)
DOI QR Code
혼류 펌프의 성능 해석
Performance prediction of mixed-flow pumps
- O, Hyeong-U (Dept. of Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
- Yun, Ui-Su ;
- Jeong, Myeong-Gyun ;
- Ha, Jin-Su
- 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.
키워드