The global linear stability properties of the quasi-parallel flow in theneighbourhood of the trailing edge of a thin aerofoil using a WKBH/multiple scales formulation in the limit of large Reynolds nummbers, as originally developed by Monkewitz, Huerre and Chomaz have been investigated. It is shown that the wake is globally unstable to second order in the asymptotic expansion parameter at all Reynolds numbers provides the effective adverse pressure gradient at the trailing edge, which is related to the aeofoil thickness distribution, is sufficient large. For smaller adverse pressure gradients, there exists a critical Reynolds number above which the flow is gobally linearly unstable, but below which it is globally stable. An asymptotic analysis for large wavenumber indicates that the double Blasius profile, corresponding to a zero adverse pressure gradient, may be absolutely unstable


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Global linear stability analysis of thin aerofoil wakes


    Additional title:

    Globale lineare Stabilitaetsanalyse des Nachstroms von duennen Tragfluegeln


    Contributors:

    Published in:

    Publication date :

    1997


    Size :

    22 Seiten, 17 Bilder, 16 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    AEROFOIL

    PARUCHURI CHAITANYA / JOSEPH PHILIP | European Patent Office | 2020

    Free access

    Aerofoil

    BROCKLEHURST ALAN | European Patent Office | 2017

    Free access

    AEROFOIL

    ALAN BROCKLEHURST | European Patent Office | 2017

    Free access

    Aerofoil

    European Patent Office | 2017

    Free access

    AEROFOIL

    PARUCHURI CHAITANYA / JOSEPH PHILIP | European Patent Office | 2021

    Free access