Wind tunnel test results are presented for four axisymmetric bluff body configurations in order to determine their effect on form and pressure drag. It was found that drag reductions on the order of 40% are obtainable with an afterbody incorporating four longitudinal 'V' grooves. Although this effect may be due to the functioning of the grooves as longitudinal, continuous vortex generators, it is concluded that further research is needed to elucidate the physical basis of the test results. Optimization of the effect will be useful in base drag reduction for such vehicles as automobiles and cargo aircraft with sharply upswept afterbodies.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Longitudinal grooves for bluff body drag reduction


    Beteiligte:
    Quass, B. (Autor:in) / Howard, F. (Autor:in) / Weinstein, L. (Autor:in) / Bushnell, D. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    01.04.1981


    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Longitudinal grooves for bluff body drag reduction

    QUASS, B. / HOWARD, F. / WEINSTEIN, L. et al. | AIAA | 1981


    Axisymmetric bluff-body drag reduction using circumferential grooves

    HOWARD, F. / GOODMAN, W. / WALSH, M. | AIAA | 1983


    Bluff Body Overflow and Drag Reduction Control

    Zhao, Min | Springer Verlag | 2021



    Bluff Body Drag Reduction with Ventilated Base Cavities

    Sprot, Adam / Sims-Williams, David / Hamlin, Fred et al. | SAE Technical Papers | 2012