Experimental studies of a NACA 65(12)-10 airfoil with a sinusoidal leading-edge undulation (LEU) were carried out to simultaneously optimize its aerodynamic and aeroacoustic performances by considering the attached as well as the separated flow at the effective Reynolds number of 10 6 , where the maximum lift was increased without sacrificing drag or overall noise at near- and poststall angles. Further aerodynamic and aeroacoustic tests indicated that a combination of LEU wavelength λ / c = 30 % and amplitude h / c = 6 % gave an optimum LEU by considering the aerodynamic performance as well as the noise reduction. Particle image velocimetry measurements of the flow over the optimized airfoil showed biperiodic velocity fluctuations downstream of the LEU peaks that were associated with unsteady stall cell structure near the trailing edge.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Aerodynamic and Aeroacoustic Optimization of Leading-Edge Undulation of a NACA 65(12)-10 Airfoil



    Published in:

    AIAA Journal ; 60 , 4 ; 2342-2353


    Publication date :

    2021-11-17


    Size :

    12 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    AERODYNAMIC AND AEROACOUSTIC CHARACTERISTICS OF THE NACA 0008 AIRFOIL

    Dos Santos, F. / Botero-Bolivar, L. / Venner, C. et al. | British Library Conference Proceedings | 2022




    Aeroacoustic Study of Airfoil Leading Edge High-Lift Devices

    Andreou, Christodoulos / Graham, Will / Shin, Ho-Chul | AIAA | 2006