The flow around infinite swept wings is computed using a Reynolds-averaged Navier-Stokes method coupled to a boundary layer and a transition prediction method based on the eN approach. This approach applies the two N factor eN strategy, which allows the differentiation between excited Tollmien-Schlichting waves of constant frequency and stationary crossflow waves of constant spanwise wave number. The applicability is documented by comparing computations with infinite swept-wing experiments on four configurations, where one configuration was tested in two different wind tunnels. The limiting N factors for both types of waves are a priori unknown. Hence, firstly the limiting N factors, which represent the stability limit, are deduced from the measured transition locations. Subsequently, iterative computations an executed to determine the transition location using the coupled system, Navier-Stokes, boundary-layer, and two N factor eN method in combination with the stability limit. The correlation between experimentally observed and computed transition locations is shown to be good for all considered wind-tunnel studies.


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    Titel :

    Infinite swept-wing Navier-Stokes computations with eN transition prediction


    Weitere Titelangaben:

    Navier-Stokes-Berechnung der Umströmung und des laminar-turbulenten Umschlagspunkts mit der e<sup>N</sup>-Strategie


    Beteiligte:
    Stock, Hans W. (Autor:in)

    Erschienen in:

    AIAA Journal ; 43 , 6 ; 1221-1229


    Erscheinungsdatum :

    2005


    Format / Umfang :

    9 Seiten, 20 Bilder, 34 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch