The Influence of Tip Clearance on the Performance of a High-Speed Inducer Centrifugal Pump under Different Flow Rates Conditions

The influence mechanism of the blade tip clearance (TC) an inducer on performance a centrifugal pump at high speed was researched under different flow rate conditions in this work. An experiment pump’s external carried out, and numerical calculation also performed four TCs. full characteristic curves, static pressure pulsation distributions were obtained. Through research analysis, it found that TC efficiency head are related to rate. Under large rate, increase is helpful improve pump. helps weaken gap jet effect inducer. inlet inducer, caused by leakage, will form low-pressure vortex zone splitter-bladed inducer’s affected TC. peak monitoring point short blades larger than long blades. With TC, cavitation degree decreased, while deepened. It has little radial force impeller. These results provide design basis for