As speed of ground vehicle increases, there are increased concerns on the aerodynamic drag reduction of ground vehicle. Recently, synthetic jet is emerging as a promising active flow control technology for aerodynamic drag reduction. In this paper, we performed an experimental parametric study on synthetic jet for aerodynamic drag reduction of Ahmed model. Synthetic jet array is constructed by twelve synthetic jet actuators, and installed on two kinds of Ahmed models, of which slant angles are 25° and 35°. The jets are emanated between the roof and the rear slant surface. Jet angle, momentum coefficient, and driving frequency are changed to assess the effect of synthetic jet array on aerodynamic drag. To quantify the effect of synthetic jet, the aerodynamic drag and rear surface pressure are measured and analyzed. From the result, the effect of synthetic jet actuation on aerodynamic drag differs according to the slant angle of the body. The aerodynamic drag is reduced for 25° slanted body, but increased for 35° model. And jet angle, momentum coefficient, and driving frequency affect the quantity of change in aerodynamic drag.


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    Title :

    Aerodynamic Drag Reduction of Ahmed Model Using Synthetic Jet Array


    Additional title:

    Sae International Journal of Passenger Cars. Mechanical Systems
    Sae Int. J. Passeng. Cars - Mech. Syst


    Contributors:
    Lee, Dong-Ho (author) / Park, Hoonil (author) / Lee, Joonho (author) / Cho, Jun-Ho (author) / Kim, Kyu-Hong (author)

    Conference:

    Asia Pacific Automotive Engineering Conference ; 2013



    Publication date :

    2013-03-25


    Size :

    6 pages




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English


    Keywords :


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