Analysis of rotor-stator interactions effects within the vaned diffuser of a radial flow pump

The paper refers to the analysis of interactions between the impeller and the vaned diffuser of a radial flow pump. It mainly focuses on the flow within one blade passage of a vaned diffuser in various operating conditions. 2D/2C PIV results within one blade passage of a diffuser, in various measuring planes in the hub to shroud direction, for various relative positions of the impeller in the diffuser frame, and for one operating condition, are compared to numeri-cal results obtained with help of CFX computer code