Publisher : The Korean Society of Mechanical Engineers
DOI : 10.22634/KSME-B.1918.104.22.168
Title & Authors
Performance prediction of mixed-flow pumps O, Hyeong-U; Yun, Ui-Su; Jeong, Myeong-Gyun; Ha, Jin-Su;
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.