Numerical simulations and experiments were carried out to investigate the unsteady flow in a two-dimensional rectangular open cavity with emphasis on the effects of length-to-depth ratio on the shear-layer development and cavity drag. The cavity was exposed to a supersonic flow of Mach 2. The results of the simulations were compared and analyzed with experimental data. Detailed predictions of flow features and frequencies showed a good agreement with the experiments. Particularly, the results indicated how the cavity flowfield changes when the length-to-depth ratio of the cavity is changed. Below a certain value of length-to-depth ratio, self-sustained periodic oscillations are strong and coherent, and the cavity drag is low. Beyond this value, the oscillations are weak, frequencies are mostly broadband, and the drag is high. This transition was found to occur for a cavity of length-to-depth ratio of 5. The investigation has also explored features of cavity shear-layer development, hitherto unexplained, and these are elucidated.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Oscillatory Characteristics of Shallow Open Cavities in Supersonic Flow


    Beteiligte:

    Erschienen in:

    AIAA journal ; 54 , 11


    Erscheinungsdatum :

    2016




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :

    Klassifikation :

    BKL:    55.50 Luftfahrzeugtechnik / 55.60 Raumfahrttechnik / 55.60 / 50.93 / 55.50 / 50.93 Weltraumforschung
    Lokalklassifikation TIB:    770/7040




    Oscillatory Characteristics of Shallow Open Cavities in Supersonic Flow

    Sridhar, V. / Gai, S. L. / Kleine, H. | AIAA | 2016


    FLOW FIELD EFFECTS OF CONTROL ON SUPERSONIC OPEN CAVITIES

    Lusk, T. / Dudley, J. / Ukeiley, L. et al. | British Library Conference Proceedings | 2011


    Assessment of LAURA for Laminar Supersonic Shallow Cavities

    Wood, William / Pulsonetti, Maria / Everhart, Joel et al. | AIAA | 2004


    Flow Field Effects of Control on Supersonic Open Cavities

    Lusk, Taylor / Dudley, Jonathan / Ukeiley, Lawrence et al. | AIAA | 2011