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 Δ N that can be incorporated into the e N 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 Δ N factors are in the same order of magnitude.


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    Titel :

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


    Beteiligte:

    Erschienen in:

    AIAA Journal ; 53 , 9 ; 2504-2511


    Erscheinungsdatum :

    2015-06-30


    Format / Umfang :

    8 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch