Application of endwall contour on subsonic axial flow compressor stage

For exploring the beneficial usage of profiled endwall on axial flow compressors. A profiled endwall was designed and numerically studied on a subsonic axial flow compressor stage of Northwest Polytechinical University was numerically studied. According to the nature of the adverse pressure gradient working environment of compressors, the contouring of the stator endwall was conducted on both streamwise and circumferential directions. Detailed design method was introduced in the paper. Research of this paper shows that: endwall contouring can effectively reduce the stator hub corner separation, and consequently improve the compressor pressure ratio and working efficiency.