A patched-grid algorithm for the analysis of complex configurations with an implicit, upwind-biased Navier-Stokes solver is presented. Results from both a spatial-flux and a time-flux conservation appraoch to patching across zonal boundaries are presented. A generalized coordinate transformation with a biquadratic geometric element is used at the zonal interface in order to treat highly stretched viscous grids and arbitrarily-shaped zonal boundaries. Applications are made to the F-18 forebody-strake configuration at subsonic, high-alpha conditions. Computed surface flow patterns compare well with ground-based and flight-test results; the large effect of Reynolds number on the forebody flow-field is shown.


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    Title :

    A patched-grid algorithm for complex configurations directed towards the F-18 aircraft


    Additional title:

    Algorithmus mit oertlichem Gitter zur Berechnung komplexer Stroemungsverhaeltnisse am F-18-Flugzeug


    Contributors:
    Thomas, J.L. (author) / Walters, R.W. (author) / Reu, T. (author) / Ghaffari, F. (author) / Weston, R.P. (author) / Luckring, J.M. (author)

    Published in:

    AIAA-Papers ; Jan ; 1-17


    Publication date :

    1989


    Size :

    17 Seiten, 9 Bilder, 19 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English







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