Vortex generators with heights comparable to displacement thickness are an effective means of producing persistent mean-flow streaks in laminar boundary layers. Inducing streaky base flows can suppress the growth of unsteady disturbances that would otherwise incite laminar-to-turbulent transition. Previous experimental and numerical works demonstrated the versatility of these miniature vortex generators in zero-pressure-gradient boundary layers. In this work, mean-flow disturbances developing from miniature vortex generators in adverse and favorable pressure-gradient boundary layers are measured systemically to assess the possibility of extending miniature vortex generator-based flow control to these scenarios. Boundary-layer streak amplitudes are measured across a range of Falkner–Skan m values, and an empirical scaling is found based on existing results. The effect of streaks on transition in an adverse pressure-gradient boundary layer is also tested, and moderate increases to laminar flow extents are observed.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Miniature Vortex Generators for Flow Control in Falkner–Skan Boundary Layers


    Beteiligte:

    Erschienen in:

    AIAA Journal ; 55 , 2 ; 352-364


    Erscheinungsdatum :

    01.02.2017




    Medientyp :

    Aufsatz (Konferenz) , Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Evaluation of Miniature Vortex Generators for Flow Control in Falkner-Skan Boundary Layers

    Downs, Robert S. / Fallenius, Bengt / Fransson, Jens et al. | AIAA | 2016


    Evaluation of Miniature Vortex Generators for Flow Control in Falkner-Skan Boundary Layers (AIAA 2016-2067)

    Downs, Robert S. / Fallenius, Bengt / Fransson, Jens et al. | British Library Conference Proceedings | 2016


    Falkner-Skan Flow over a Wedge with Slip Boundary Conditions

    Martin, Michael J. / Boyd, Iain D. | AIAA | 2010


    Falkner-Skan Flow Over a Wedge with Slip Boundary Conditions

    Martin, Michael / Boyd, Iain | AIAA | 2009


    Falkner-Skan Flow Over a Wedge with Slip Boundary Conditions

    Martin, M. / Boyd, I. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2009