Rapid oscillations of test-section flow velocity can be generated in a wind tunnel using flow-control louvers installed in the wind-tunnel circuit; however, control of the test-section velocity must still account for the dynamic behavior of the wind tunnel itself. In this paper, the dynamic behavior of a low-speed closed-circuit wind tunnel in response to dynamic louver excitation is examined using an experimentally validated method-of-characteristics modeling approach. The model is used to develop and test a method of controlling the louver motions to simulate longitudinal gusts with a von Kármán gust spectrum for length scales from 0.1 to 10 m. Results showing improvement of the wind-tunnel dynamic behavior using a Helmholtz resonator are also presented.


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    Titel :

    Dynamic Behavior and Gust Simulation in an Unsteady Flow Wind Tunnel


    Beteiligte:
    Mark Rennie, R. (Autor:in) / Catron, Brian (Autor:in) / Zubair Feroz, M. (Autor:in) / Williams, David (Autor:in) / He, Xiaowei (Autor:in)

    Erschienen in:

    AIAA Journal ; 57 , 4 ; 1423-1433


    Erscheinungsdatum :

    2019-01-25


    Format / Umfang :

    11 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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