The formation of a ground vortex at the inlet of a cylindrical nacelle operating in suction near a ground plane in the presence of crosswind is significantly delayed in wind tunnel experiments using aerodynamic bleed. Peripheral bleed actuation of the external airstream is utilized to alter and delay the near-ground flow reversal on the leeward side, which precedes the vortex initiation. It is shown that azimuthally symmetric or asymmetric bleed configurations can significantly delay the ground vortex formation, although at the expense of the decreased total pressure recovery. Utilization of about 21% global porosity over the upper inlet surface can delay the vortex formation to over 300% of the required dimensionless inlet momentum flux in the absence of control. Moreover, the circulation of a ground vortex that eventually forms in the presence of the asymmetric bleed actuation is reduced by nearly 40% compared to the corresponding ground vortex in the absence of control.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Control of a Nacelle Inlet Ground Vortex in Crossflow


    Beteiligte:
    Nichols, Derek A. (Autor:in) / Vukasinovic, Bojan (Autor:in) / Glezer, Ari (Autor:in)

    Erschienen in:

    AIAA Journal ; 63 , 6 ; 2199-2210


    Erscheinungsdatum :

    01.06.2025




    Medientyp :

    Aufsatz (Konferenz) , Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Control of a Nacelle Inlet Ground Vortex

    Nichols, Derek A. / Vukasinovic, Bojan / Glezer, Ari | AIAA | 2024


    Formation of a Nacelle Inlet Ground Vortex in Crosswind

    Nichols, Derek A. / Vukasinovic, Bojan / Glezer, Ari et al. | AIAA | 2022


    Formation of a Nacelle Inlet Ground Vortex in Crosswind

    Nichols, Derek A. / Vukasinovic, Bojan / Glezer, Ari et al. | TIBKAT | 2022


    AIRCRAFT NACELLE INLET

    KIRK DAVID / HILL GRAEME / HEBDEN DAVID et al. | Europäisches Patentamt | 2021

    Freier Zugriff

    NACELLE INLET STRUCTURE

    PRETTY MICHAEL SEAN / WARD STEPHEN H | Europäisches Patentamt | 2020

    Freier Zugriff