Effects of blade-tip squealer geometry on the working performance of a helico-axial multi-phase pump

Tip-leakage flow occurs in the tip-clearance region of helico-axial multi-phase pumps, and this reduces their working performance. In study, a structural modification, form inclusion “squealers” on impeller blade tips, was adopted to reduce tip-leakage pump, thereby improving its Numerical simulations were conducted examine impact patterns geometric parameters such as depth, shape, size squealer external characteristics flow. The results study show that presence tips has significant effect performance pump. depth ratio length blade-tip found be critical squealer. There is an optimal value for relative 9%. Larger ratios also more favorable width location have relatively low impacts pump considered study. reduced rate alter structure field region, changing periodic distribution pattern some extent. important guiding significance pumps.