Recent improvements in an unstructured-grid method for large-scale aerodynamic design re presented. Previous work had shown such computations to be prohibitively long in a sequential processing environment. Also, robust adjoint solutions and mesh movement procedures were difficult to realize, particularly for viscous flows. To overcome these limiting factors, a set of design codes based on a discrete adjoint method is extended to a multiprocessor environment using a shared memory approach. A nearly linear speedup is demonstrated, and the consistency of the linearizations is shown to remain valid. The full linearization of the residual is used to precondition the adjoint system, and a significantly improved convergence rate is obtained. A new mesh movement algorithm is implemented, and several advantages over an existing technique are presented. Several design cases are shown for turbulent flows in two and three dimensions.


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    Title :

    Recent improvements in aerodynamic design optimization on unstructured meshes


    Additional title:

    Neue Verbesserungen auf dem Gebiet der aerodynamischen Optimierung mit heterogen strukturierten Gitternetzen


    Contributors:

    Published in:

    AIAA Journal ; 40 , 6 ; 1155-1163


    Publication date :

    2002


    Size :

    9 Seiten, 26 Bilder, 3 Tabellen, 26 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English







    AIAA-2001-0596 Recent Improvements in Aerodynamic Design Optimization On Unstructured Meshes

    Nielsen, E. J. / Anderson, W. K. / AIAA | British Library Conference Proceedings | 2001


    Aerodynamic Design Using Unstructured Meshes

    Elliott, J. / Peraire, J. / AIAA | British Library Conference Proceedings | 1996