Influences of Bowed Stator on Aerodynamic Performances of Single-stage Low-speed Axial Compressor

Abstract

In this study, the influences of the bowed stator on the aerodynamic performances of a single-stage low-speed axial compressor were investigated numerically. The flows in the compressor with the typical straight stator blades and in that with the bowed stator blades were computed by using the commercial CFD code. The comparison of the computed results for two types of stator blades clarified the followings. The bowed stator blades improved the aerodynamic performances of the compressor due to mainly the suppression of the hub corner separation in the stator blade row. The decrease of the flow rate increased the hub corner separation in the compressor with the straight stator blades, and consequently enhanced the suppression effect on corner separation caused by the bowed blades.