The performance of a circulation-control inlet guide vane that makes use of the Coanda effect was studied numerically in a high Mach number turbine cascade. The effect of different shapes (elliptic and circular) of the Coanda surface at the blade trailing edge was investigated by implementing both a Coanda jet and a counter-flow blowing. Under high subsonic flow conditions, with a total blowing ratio of 3% of the mainstream, the circulation control cascade can reach the same performance as the reference stator with a 13.5% reduction in the axial chord length, with minimal increase of the energy loss coefficient. The Coanda surfaces with small curvature are more efficient in entraining the mainstream flow, and they achieve better aerodynamic performance. The wall attachment of the Coanda jet is improved by employing counter-flow blowing, resulting in a slight increase of both the exit flow angle and the expansion ratio. Under supersonic flow conditions at the cascade exit, it is more difficult for the circulation control cascade to reach the appropriate flow turning due to a premature shock wave, which is absent in the original cascade until the very end of the suction surface.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Numerical simulation of circulation control turbine cascade with Coanda jet and counter-flow blowing at high Mach numbers


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    2017




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch



    Klassifikation :

    BKL:    55.50 Luftfahrzeugtechnik / 55.60 Raumfahrttechnik / 55.60 / 55.50
    Lokalklassifikation TIB:    275/7040



    Stator Cascade Flow Vetoring Through Counter Flow Blowing

    Copenhaver, William / Car, David / Estevadeordal, Jordi et al. | AIAA | 2003


    Sparse Model of the Lift Gains of a Circulation Control Wing with Unsteady Coanda Blowing

    Semaan, Richard / El Sayed, M. Yosef / Radespiel, Rolf | British Library Conference Proceedings | 2019


    "Coanda Circulation Control Maneuvering (C^3M) System"

    Brown, N. A. | British Library Conference Proceedings | 1998


    Coanda Effect and Circulation Control for Nonaeronautical Applications

    Jones, Gregory S. / Joslin, Ronald D. | AIAA | 2006


    Delta Wing Circulation Control Using the Coanda Effect

    Sellars, Nick / Wood, Norman / Kennaugh, Andrew | AIAA | 2002