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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    Title :

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


    Contributors:

    Published in:

    AIAA Journal ; 53 , 9 ; 2504-2511


    Publication date :

    2015-09-01




    Type of media :

    Conference paper , Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





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