The influence of forward-facing steps on the amplification of disturbances in transonic flows is studied numerically. The main goal is to find a function for an additional amplification factor ΔN that can be incorporated into the eN method. In the present study, both two-dimensional direct numerical simulation of disturbances as well as linear stability theory are used to gain detailed information on the flow. Good agreement between N-factor results from direct numerical simulation and linear stability theory is obtained. Subsonic and slightly supersonic results show differences in the flow topology and in the shape of the N-factor curve, but effective ΔN factors are in the same order of magnitude. Presented as Paper 2013-0080 at the 51st AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, Grapevine, TX, 7-10 January 2013


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    Titel :

    Impact of Forward-Facing Steps on Laminar-Turbulent Transition in Transonic Flows



    Erschienen in:

    AIAA journal ; 53 , 9 ; 2504-2511


    Erscheinungsdatum :

    2015




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :

    Klassifikation :

    BKL:    50.93 / 55.50 Luftfahrzeugtechnik / 50.93 Weltraumforschung / 55.60 Raumfahrttechnik / 55.50 / 55.60
    Lokalklassifikation TIB:    770/7040




    Impact of Forward-facing Steps on Laminar-turbulent Transition in Transonic Flows Without Pressure Gradient

    Edelmann, C. / Rist, U. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2013




    TURBULENT FLOWS OVER BACKWARD FACING STEPS

    Fedorova, N. N. / Bedarev, I. A. / Goldfeld, M. A. | British Library Conference Proceedings | 2004