Effects of Matching between the Inducer and the Impeller of a Centrifugal Pump on Its Cavitation Performance

The inducer is often used to prevent cavitation in a centrifugal pump. However, it may lead deterioration of the performance pump when poorly matched with impeller. Numerical simulations are employed study effects matching, specifically, axial space and circumferential deflection between impeller, on performance. results show that destroys rotational symmetry velocity distribution at inlet resulting influence part channels advance, which explains why cannot improve even though improves energy On basis not changing geometric shape suction-specific speed increased by nearly 300 only adjusting 100 deflection. better larger space. There an optimal value works best effect overall more significant than provide useful reference for design installation inducer.