【Abstract】 This paper presented the flow field analysis in centrifugal impellers compressing perfectand real gas respectively. The quasi-3D S2/S1 streamfilaments iterative computation wasused. The L-K method and the polytropy analysis proposed by Schules were applied for thereal gas thermodynamic analysis. The numberical flow field analysis was applied to a backbowed 3D blade compressing perfect and real gas respectively.更多还原