Analysis of three-dimensional blading influence on highly loaded transonic fan stator

Under the background of highly loaded transonic inlet fan stage, which produces loading coefficient of 0.42, three-dimensional (3-D) blading influence on transonic stator aerodynamic performance was analyzed as well as its mechanism with numerical simulation technology. The result indicates that the forward sweep is not effective to control the corner separation conducted by shock/endwall boundary layer interaction because of the trend that the shock always tends to remain perpendicular to the endwall. Positive bow modifies the stator performance obviously through adding the blade force to migrate the low-speed corner fluid toward to mid-span. Sweep/bow composition improves the stator performance further, illustrating that the benefit from pure forward sweep is limited and forward sweep can attain optimum effect when combining the positive bow.