In order to reduce the effect of swirl distortion on performance and stability of axial compressor

the first-stage stator of two-stage low speed axial compressor was designed into bowed blade with three different positive bending angles. A full annulus three-dimensional steady simulation method was used to investigate the effect of twin swirl on performance and stability of compressor. The results show that stator with appropriate positive bending design can improve the anti-twin swirl capacity of compressor. By reducing the load of blade at end wall regions using bowed stator blades

the suction surface boundary layer separation at hub will be decreased

loss will be reduced

and both of efficiency and total pressure ratio will be increased as a result. The maximum efficiency can be increased by 1.5% and mass flow rate at stall boundary point can be decreased by 6.95% when bending angles of stator blades equal to 10 degree. The efficiency and total pressure ratio will be increased by 1.7% and 0.03% respectively when mass flow rate equals to 18.5kg/s. Load at mid-span region and friction loss will increase when bending angle is too large

making it harmful to improve the efficiency and total pressure ratio.