A nonlinear aerodynamic prediction technique based on the full-potential equation in conservation form has been developed for the treatment of supersonic flows. The method uses the theory of characteristic signal propagation to accurately simulate the flow structure, which includes shock waves and mixed elliptic-hyperbolic crossflow. An implicit approximate factorization scheme is employed to solve the finite-differenced equation. The necessary body-fitted grid system in every marching plane is generated numerically, using an elliptic grid solver. Results are shown for conical and nonconical wing-body combinations and compared with experimental data and euler calculations. The method demonstrates an enormous savings in execution time and memory requirements over Euler methods.


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    Title :

    An efficient, full-potential implicit method based on characteristics for supersonic flows


    Additional title:

    Eine effektive, implizite Potentialfunktions-Methode auf der Basis der Charakteristika fuer Ueberschallstroemungen


    Contributors:
    Shankar, V. (author) / Osher, S. (author)

    Published in:

    AIAA Journal ; 21 , 9 ; 1262-1270


    Publication date :

    1983


    Size :

    9 Seiten, 10 Bilder, 15 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English