A numerical investigation was carried out to assess the effectiveness of plasma-based flow control for a swept-wing configuration. A single dielectric barrier discharge plasma actuator was used to delay transition generated by excrescence near the leading edge. Large-eddy simulations were performed for the configuration, which had a wing airfoil section that is representative of modern reconnaissance air vehicles and maintained an appreciable region of laminar flow at design conditions. High-fidelity numerical solutions to the Navier–Stokes equations were generated for wing sweep angles of 30 and 45 deg and compared with the previously obtained unswept case. Control was generally more difficult to attain for nonzero sweep angles and transition could not be delayed for the 45 deg case unless a novel segmented swept actuator configuration was employed. Features of the computed flowfields are elucidated and effects of plasma actuation are quantified. It was found, for a sweep angle of 30 deg, that the wing lift-to-drag ratio could be increased by 9% by applying plasma control, which is comparable to that of the unswept situation. With a sweep angle of 45 deg, although plasma control could delay transition, the lift-to-drag ratio was not favorably altered.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Plasma-Based Control of Excrescence-Generated Transition on a Swept Wing


    Contributors:

    Published in:

    AIAA Journal ; 55 , 5 ; 1610-1621


    Publication date :

    2017-01-13


    Size :

    12 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Plasma-Based Control of Excrescence-Generated Transition on a Swept Wing

    Rizzetta, Donald P. / Visbal, Miguel | AIAA | 2016




    Effects of Step-Excrescence Location on Swept-Wing Transition

    Crawford, Brian K. / Duncan, Glen T. / Tufts, Matthew W. et al. | AIAA | 2015


    Effects of Step-Excrescence Location on Swept-Wing Transition (AIAA 2015-1233)

    Crawford, Brian K. / Duncan, Glen T. / Tufts, Matthew W. et al. | British Library Conference Proceedings | 2015