혼류 펌프의 성능 해석

DOI QR코드

DOI QR Code

오형우;윤의수;정명균;하진수
O, Hyeong-U;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

혼류 펌프;평균 유선 해석;손실 모델;2차원 익렬 이론;성능 예측