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 approach 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/A-18 forebody-Ieading-edge extension 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 flowfield is shown.


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    Title :

    Application of a Patched-Grid Algorithm to the F/A-18 Forebody-Leading-Edge Extension Configuration


    Contributors:

    Conference:

    27th Aerospace Sciences Meeting ; 1989 ; Reno, NV, US


    Published in:

    Publication date :

    1990-09-01




    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English