This study focuses on the fluid–structure interactions of the Benchmark Supercritical Wing (BSCW) at buffet conditions (transonic flows and moderate angles of attack). It presents unsteady Reynolds-averaged Navier–Stokes simulations of the fixed BSCW, the BSCW undergoing prescribed pitch motion, and the BSCW suspended on springs in one and two degrees of freedom. The study’s objectives are to 1) establish the BSCW buffet properties and 2) investigate the aeroelastic and prescribed-motion responses of the wing at buffet conditions. The results indicate that the BSCW buffet is predominantly two-dimensional in terms of its characteristics, although it is greatly affected by the tip flow. The response to prescribed pitch motion and the aeroelastic response of the spring-suspended wing display similar phenomena, where the response in the buffet frequency is suppressed once the oscillation amplitude exceeds some threshold, and the structural and aerodynamic responses are solely at the structural frequency. At the studied conditions, the BSCW undergoes stall flutter, dominated by pitch oscillations, compared to a bending-torsion coalescence flutter at lower angles of attack. We conclude that the shock buffet does not drive the BSCW flutter instability. However, both the buffet and stall flutter develop at similar flow conditions of detached boundary layer behind a strong shock at transonic Mach numbers and moderate angles of attack.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Shock Buffet and Associated Fluid–Structure Interactions of the Benchmark Supercritical Wing


    Beteiligte:

    Erschienen in:

    AIAA Journal ; 61 , 6 ; 2381-2399


    Erscheinungsdatum :

    2023-04-18


    Format / Umfang :

    19 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Transonic Shock Buffet on the Benchmark Supercritical Wing

    Poplingher, Lior / Mallik, Wrik / Raveh, Daniella E. | TIBKAT | 2022


    Transonic Shock Buffet on the Benchmark Supercritical Wing

    Poplingher, Lior / Mallik, Wrik / Raveh, Daniella E. | AIAA | 2022


    Transonic Buffet in the Benchmark Supercritical Wing

    Singh, Magan / Venkatraman, Kartik | TIBKAT | 2023


    Transonic buffet in the Benchmark Supercritical Wing

    Singh, Magan / Venkatraman, Kartik | AIAA | 2023