NUMECA commercial software was used to simulate some axial-centrifugal compressor with bypass.In order to induce the flow separation on the surface of the core stator

three kinds of blades were used in the design course

i.e.straight blade

backward swept at foot and both backward swept at foot and forward swept at tip

respectively.The results show that

the swept and curved blade can reduce the pile of the low energy flow at corner

and restrain the flow separation

improving the flow at the corner and enhancing the overall performance of the blade.The paper also made some computation about the solidity influence on the cascade aerodynamics.The results show that

reasonable solidity can change the flow field structure

and reduce the secondary loss of the cascade.