This work demonstrates the viability of a novel transverse-gust generator that is capable of producing a controllable time-varying gust without increasing the turbulence level within a large region of the flow facility. The new gust-generator concept is based on a vortex-generator array ( VGA ) along one of the walls of a facility’s test section at a given streamwise location. Using such a device, a steplike gust and a sinusoidal gust with amplitudes of 5.7% of freestream velocity are demonstrated in a wind tunnel. The sinusoidal gust produces practically pure-harmonic oscillation in the freestream’s direction of ± 3.25 deg at a frequency of 2 Hz for a freestream speed of 10    m / s . A simplified vortex-array model is shown to be a viable tool for the design of the new gust generator. This study is focused on demonstrating the concept of the VGA gust generator while leaving the generator’s design optimization and the exploration of the limits of the gust strength and uniformity to future work.


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    Title :

    Development of a Low-Turbulence Transverse-Gust Generator in a Wind Tunnel



    Published in:

    AIAA Journal ; 59 , 5 ; 1575-1584


    Publication date :

    2021-05-01




    Type of media :

    Conference paper , Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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