Research on Aerodynamic and Aeroacoustic Characteristics of Different Airfoil
Aerodynamic noise of multi-element airfoils has large relationship with its slat,the unsteady phenomenon and the vortex shedding are the main noise source,such as the interaction between vortex and vortex,and the impact on the shear layer and wall.Using the flow field caused by steady simulation,acoustic source intensity is analyzed by Broadband noise source.The effect of leading-edge droop nose and slats with different angles of attack on noise and force is analyzed based on Detached Eddy Simulation(DES)and Ffowcs Williams and Hawkings(FW-H).The results show that leading edge droop nose has positive effect on noise suppression and aerodynamic characteristics in some angles of attack,and also enhance the aerodynamics of airfoils.
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