REVERSE FLOW PHENOMENON IN A ROTATING DIFFUSER

摘要

A study of the reverse flow phenomenon at the outlet of a rotating axial diffuser with a circular cross-section is presented in the paper. Measurement of the flow velocity components was performed by the LDA system. In addition, computer-aided visualization of the flow structures was carried out. The results showed a certain dependence of the position and size of the recirculation zone in the diffuser outlet transverse section on the amount of airflow and on the rotating frequency of the diffuser. The computer-aided visualization method proved to be more suitable for detecting the position and shape of the reverse flow regions.