A prediction of whether a point on a computer-generated surface is adjacent to laminar or turbulent flow is made using a transition prediction technique. A plurality of instability modes are obtained, each defined by one or more mode parameters. A vector of regressor weights is obtained for the known instability growth rates in a training dataset. For an instability mode in the plurality of instability modes, a covariance vector is determined. A predicted local instability growth rate at the point is determined using the covariance vector and the vector of regressor weights. Based on the predicted local instability growth rate, an n-factor envelope at the point is determined.


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    Titel :

    Predicting transition from laminar to turbulent flow over a surface


    Beteiligte:
    RAJNARAYAN DEV (Autor:in) / STURDZA PETER (Autor:in)

    Erscheinungsdatum :

    2016-08-16


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / B64C AEROPLANES , Flugzeuge



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    LAMINAR-TURBULENT TRANSITION MECHANISMS OVER WIDELY-SPACED SUCTION HOLES

    Crowley, B. / Atkin, C. | British Library Conference Proceedings | 2018


    LAMINAR-TURBULENT TRANSITION CORRELATIONS IN SUPERSONIC/HYPERSONIC FLOW

    Simeonides, G. A. / Kosmatopoulos, E. / International Council of the Aeronautical Sciences | British Library Conference Proceedings | 2006