Unsteady boundary-layer separation from an Eppler 387 airfoil at low Reynolds number is studied numerically. Through a series of computations, the effects of Reynolds number and angle of attack are investigated. For all cases, vortex shedding is observed from the separated shear layer. From linear stability analysis, a Kelvin-Helmholtz instability is identified as causing shear layer unsteadiness. The low-turbulence wind-tunnel tests of the Eppler 387 airfoil are used to compare with the time-averaged results of the present unsteady computations. The favorable comparison between computational and experimental results strongly suggests that the unsteady large-scale structure controls the low-Reynolds-number separation bubble reattachment with small-scale turbulence playing a secondary role.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Low-Reynolds-number separation on an airfoil


    Additional title:

    Grenzschichtablösung an einer Tragfläche bei geringen Reynoldszahlen


    Contributors:

    Published in:

    AIAA Journal ; 34 , 8 ; 1570-1577


    Publication date :

    1996


    Size :

    8 Seiten, 9 Bilder, 3 Tabellen, 33 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Low-Reynolds-Number Separation on an Airfoil

    Lin, J.C.M. | Online Contents | 1996


    Low-Reynolds-number separation on an airfoil

    Lin, J. C. M. / Pauley, Laura L. | AIAA | 1996




    Low Reynolds Number Airfoil Design

    North Atlantic Treaty Organization | British Library Conference Proceedings | 2005