Investigation of Deviation Model Correction for Transonic Compressor Rotors
This paper proposes a theoretical analysis method of deviation angle correction in tran-sonic rotors considering the changes in mean streamline curvatures of S1 stream surfaces.Classical de-viation models for subsonic cascades and transonic correction lack the instruction of shock-structure parameters,and causes obvious prediction errors in flow turning and loading characteristics.Based on classical transonic correction method,this paper describes the transonic correction of deviation angle as the outcome of changes in mean streamlinc curvatures due to transverse pressure difference in the post-shock region of S1 stream surface.The analytical model and empirical correlations of transonic deviation angle are established near the design point.The model is employed to an in-house through-flow code of streamline curvature method,and the correction method is investigated in the first transonic rotor(R1)of a multi-stage axial compressor.The through-flow predictions agree well with experiment data and CFD results.
万方数据
维普
