This work describes an implicit large-eddy simulation for active control of flowover a wall-mounted hump. Results are presented for the baseline simulation without flow control and for both steady-suction and oscillatory blowingand- suction flow control. Results are compared with Reynolds-averaged Navier-Stokes solutions and experimental data from NASA's 2004 Computational Fluid Dynamics Validation on Synthetic Jets and Turbulent Separation Control Workshop. The baseline and steady-suction cases achieved significantly better agreement with experimental flowfield characteristics than the Reynolds-averaged Navier-Stokes simulations in the separated region downstream of the hump. Because the large-eddy simulation was accomplished at one-fifth of the experimental Reynolds number, the oscillatory flow control displayed less effectiveness than the experiment. Using a larger oscillatory amplitude exerts more control on the separation bubble. Comparing the baseline flow solution with cases using flow control clearly demonstrates the ability to reduce the size of the separated flow region in the wake of the hump.


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    Title :

    Large-eddy simulation of separation control for flow over a wall-mounted hump


    Additional title:

    Großwirbelsimulation der Separationskontrolle für die Strömung über einen Wand-befestigten Buckel


    Contributors:

    Published in:

    AIAA Journal (online) ; 45 , 11 ; 2643-2660


    Publication date :

    2007


    Size :

    18 Seiten




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Large-Eddy Simulation of Separation Control for Flow Over Wall-Mounted Hump

    Morgan, P. E. / Rizzetta, D. P. / Visbal, M. R. et al. | British Library Conference Proceedings | 2005



    Large-Eddy Simulation of Separation Control for Flow Over a Wall-Mounted Hump

    Morgan, Philip / Rizzetta, Donald / Visbal, Miguel | AIAA | 2005


    Large-Eddy Simulation of Separation Control for Flow over a Wall-Mounted Hump

    Philip Morgan / Donald Rizzetta / Miguel Visbal | AIAA | 2007