The goal of this research is the control of leading-edge vortex breakdown location utilizing along-the-core blowing near the apex on the leeward surface of sharp-edged, slender, delta wings at high angles of attack. In the S2Ch subsonic wind tunnel at ONERA Chalais-Meudon, two delta wing models with 70-deg sweep angles and root chords of 950 mm have been configured to collect qualitative and quantitative surface and flowfield data. First, an examination of the streamwise, time-dependent oscillation of the leading-edge vortex breakdown locations without active flow control is presented. These results further the understanding of the vortex breakdown phenomena and provide a more precise basis for evaluating the effectiveness of various flow control methods. Second, open-loop blowing along one of the vortex cores on the leeward surface of the delta wing demonstrates the ability to displace downstream the controlled, time-averaged, vortex breakdown location by 20% of the root chord.


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    Titel :

    Oscillation of vortex breakdown location and blowing control of time-averaged location


    Weitere Titelangaben:

    Periodische Längenänderung von Längswirbeln auf der Saugseite von Deltaflügeln und ihre Beeinflussung durch das Einblasen von Luft


    Beteiligte:
    Mitchell, A.M. (Autor:in) / Barberis, D. (Autor:in) / Molton, P. (Autor:in) / Delery, J. (Autor:in)

    Erschienen in:

    AIAA Journal ; 38 , 5 ; 793-803


    Erscheinungsdatum :

    2000


    Format / Umfang :

    11 Seiten, 13 Bilder, 1 Tabelle, 43 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    Oscillation of Vortex Breakdown Location and Blowing Control of Time-Averaged Location

    Anthony M. Mitchell / Didier Barberis / Pascal Molton et al. | AIAA | 2000



    Oscillation of vortex breakdown location and its control by tangential blowing

    Mitchell, Anthony / Barberis, Didier / Delery, Jean | AIAA | 1998


    Control of vortex breakdown location by symmetric and asymmetric blowing

    Mitchell, Anthony / Molton, Pascal / Barberis, Didier et al. | AIAA | 1999


    Control of leading edge vortex breakdown by blowing

    VISSER, K. / IWANSKI, K. / NELSON, R. et al. | AIAA | 1988