Analiza kinematike toka v rotirajočen difuzorju

This paper describes a study of the flow-velocity field inside a rotating axial diffuser with a circular cross-section. The flow- velocity; components were measured with an LDA system. The velocity-component measurements confirmed the existence of two types of flow: a rotating region near the rotating wall and a non-rotating region near the longitudinal axis of the diffuser A significant increase in all three velocity components was observed in a thin layer at the rotating-diffuser wall. In addition, three different turbulence-closure models were applied for the velocity-field prediction inside the rotating diffuser.