The influence of spanwise flow on the development and stabilization of leading-edge vortices (LEVs) on a foil (without rotational acceleration) has been investigated. The plunging swept wing/fin geometry used in this study, characteristic of fish-like tails, has been found to be insufficient in the stabilization of LEVs. Direct force measurements and visualizations, including Particle Image Velocimetry and lead precipitation, show that despite the presence of a strong spanwise flow at higher sweepback angles, the vortex breaks off and convects downstream at the same relative time as found for low sweepback angles, which experience little spanwise contribution. Although the LEV stabilization is insensitive to bulk spanwise flow, the LEV and tip vortex have been observed to maintain a stronger connection with one another at higher sweepback angles. This result implies that despite similar forces developing for low and high sweepback angles alike, the resulting vortex-wake topologies can vary significantly from one another.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    On the stabilization of leading-edge vortices with spanwise flow


    Beteiligte:

    Erschienen in:

    Experiments in Fluids ; 52 , 2 ; 511-517


    Erscheinungsdatum :

    2012


    Format / Umfang :

    7 Seiten




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    Circulation Redistribution in Leading-Edge Vortices with Spanwise Flow

    Wong, Jaime G. / Gillespie, Graeme / Rival, David E. | AIAA | 2018


    Spanwise cambered delta wing with leading-edge separation

    FERNANDEZ, J. / HOLLA, V. S. | AIAA | 1977


    Flow Measurements in Leading-Edge Vortices

    P. M. Sforza / W. Stasi / J. Pazienza et al. | AIAA | 1978


    Flow measurements in leading edge vortices

    SFORZA, P. / STASI, W. / PAZIENZA, J. et al. | AIAA | 1977


    Supersonic Cavity Flow Control Using a Spanwise Array of Leading-Edge Tabs

    Singh, Surabhi / Ukeiley, Lawrence / Zhang, Yang et al. | AIAA | 2022