Reynolds-averaged Navier–Stokes and hybrid large-eddy/Reynolds-averaged Navier–Stokes simulations of turbulent flow past an Aérospatiale A-Airfoil near stall at Rec=2.1×106, M=0.15, α=13.3 and a NACA 0012 airfoil under static stall conditions (Rec=1.0×106, M=0.1, α=16.7  deg) are described in this paper. In the flow past the A-Airfoil, comparisons with surface skin-friction coefficient and pressure coefficient distribution are generally in good agreement with experimental measurements. Comparisons with experimental velocity profile data and Reynolds-stress data are also generally favorable. Leading-edge laminar separation and turbulent reattachment is predicted when the Menter–Langtry correlation-based transition model is used in combination with either Reynolds-averaged Navier–Stokes or large-eddy/Reynolds-averaged Navier–Stokes strategies, but the level of trailing-edge separation is underpredicted, relative to experimental data and to results obtained without the inclusion of transition model. For the case of flow past a NACA 0012 airfoil under static stall conditions, results from the large-eddy/Reynolds-averaged Navier–Stokes simulations exhibit a sensitivity to mesh refinement, with finer spanwise mesh resolution leading to light stall, characterized primarily by trailing-edge separation, and coarser spanwise mesh resolution leading to deep stall, characterized by the presence of a stabilized leading-edge vortex. Calculations that include wind-tunnel wall effects show better general agreement with experimental measurements but also display the aforementioned sensitivity to spanwise mesh refinement.


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    Titel :

    Numerical Simulations of Turbulent Flow over Airfoils Near and During Static Stall


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    2017




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :

    Klassifikation :

    BKL:    55.50 Luftfahrzeugtechnik / 55.50
    Lokalklassifikation TIB:    770/7040





    Flow Oscillation over Airfoils Near Stall

    Bragg, M. B. / Heinrich, D. C. / Zaman, K. B. M. Q. | British Library Online Contents | 1994


    Flow Oscillation over Airfoils Near Stall

    Bragg, M. B. / Heinrich, D. C. / Zaman, K. B. M. Q. et al. | British Library Conference Proceedings | 1994


    Low-Frequency Flow Oscillation over Airfoils near Stall

    Michael B. Bragg / Douglas C. Heinrich / Abdollah Khodadoust | AIAA | 1993