This paper presents the investigation of airfoil turbulent boundary-layer trailing-edge noise reduction using a parametric airfoil design. The airfoil design tool performs a parametric design starting from a baseline airfoil and then morphing it with a number of design parameters, which include camber, camber crest position, thickness, thickness crest position, leading-edge radius, trailing-edge camber, and boat-tail angle. A predictive method that combines an empirical wall-pressure spectrum model and an acoustic diffraction model is used to predict airfoil turbulent boundary-layer trailing-edge noise. In this study, a NACA 0012 airfoil and a NACA 64-618 airfoil are used to analyze the effects of the design parameters on airfoil aerodynamic performance and trailing-edge noise. The sensitivity of different parameters is performed with Morris’s method in order to further assess their relative influences. Overall, it is found that thickness, trailing-edge camber, and boat-tail angle have a significant influence on noise levels.


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    Title :

    Parametric Airfoil Design and Sensitivity Analysis for Turbulent Boundary-Layer Trailing-Edge Noise Reduction


    Contributors:
    Liu, Chen (author) / Lee, Seongkyu (author)

    Published in:

    AIAA Journal ; 60 , 4 ; 2324-2341


    Publication date :

    2021-10-13


    Size :

    18 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English