Effect of cavitation on energy conversion characteristics of a multiphase pump

To reveal the effect of cavitation on energy conversion characteristics helical axial multiphase pump (Abbreviated to pump), flow in is simulated. The results show that with decrease number ?, firstly extends along streamwise blade suction side, and then turns pressure side blade. When develops fracture stage, completely covered by bubbles; vapor volume fraction impeller almost 0 at inception critical stages; whole passage. output power mainly contributed done pressure. viscous force stage slightly reduced. While, decreases greatly. With evolution cavitation, turbulence dissipation loss gradually. Moreover, stages, friction increases greatly compared previous two resulting an increment total loss.