Effect of the Inclined Part Length of an Inclined Blade on the Cavitation Characteristics of Vortex Pumps

To study the effect of length second inclined section vane on vortex structure and pressure distribution inside a pump, this paper uses combination numerical simulations (CFD) experimental verification methods to analyze static internal flow field volume fraction impeller bubble at different total inlet pressures as well streamline pump instants. The results show that increases, both low-pressure area vapor bubbles increase, resistance cavitation becomes worse. When is low, large number vortices will be generated channel leading cavitation; longer section, larger velocity gradient fluid more serious phenomenon deliquescence, intense cavitation, while shorter can effectively improve anti-cavitation performance pump.