The separation distance required between transport aircraft to avoid wake vortices remains a limiting factor on airport capacity. The dissipation of the wake can be accelerated by perturbing co-operative instabilities between multiple pairs of vortices. This paper presents the results of a preliminary experimental investigation into the use of pulsed span-wise air jets in the wing tip to perturb a single tip vortex in the very near field. Velocity measurements were made using PIV and hot-wire anemometry. The results demonstrate that the vortex position can be modulated at frequencies up to 50 Hz and, as such, the method shows promise for forcing instability in multiple vortex wakes.


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    Titel :

    Spatial perturbation of a wing-tip vortex using pulsed span-wise jets


    Weitere Titelangaben:

    Räumliche Modulation eines Tragflächen-Spitzenwirbels durch einen pulsierenden Strahlausfluss


    Beteiligte:
    Heyes, A.L. (Autor:in) / Smith, D.A.R. (Autor:in)

    Erschienen in:

    Experiments in Fluids ; 37 , 1 ; 120-127


    Erscheinungsdatum :

    2004


    Format / Umfang :

    8 Seiten, 7 Bilder, 1 Tabelle, 18 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




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