The flow analysis of NACA65-009 airfoil under different working conditions was carried out by numerical method,and the calculated results were compared with the known published data.Based on the calculation of flow field characteristics near the cascade surface,the effects of boundary layer velocity distribution,wake width,maximum loss velocity and different cascade consistency on flow characteristics were studied.The results show that the flow field of cascade is greatly influenced by the end wall and consistency,and the flow separation is easy to occur near the end wall.When the consistency I=0.72～1.52,the change of consistency has little effect on the aerodynamic performance of airfoil cascade.However,when the consistency increases to a certain value,the wake of adjacent cascades will interfere,and the turbulence intensity in the wake area will further increase,which will reduce the aerodynamic performance of cascades.
维普
万方数据