The industrial participants include McDonnell Aircraft Company, McDonnell Douglas Research and Development Company and Teledyne Brown Engineering Company. The research and devcl-

opment activities of this effort are focused on the advancement of methodologies to increase the efficiency, quality and productivity of an overall CFD simulation associated with geometrically complex configurations. The progress realized in the aforestated development is presented in this report. Progress concerning efforts designed to increase the efficiency and productivity of an overall CFD simulation process- from geometry definition to post processing of results as applied to complete aircraft configurations is presented. This progress has been brought about through enhancements in geometry processing, surface grid generation, grid refinement, grid adaptation, and domain de-composition strategies. The direct and inverse NURBS (Non Uniform Rational B-Spline) based surface representation is utilized in the development of algorithms for surface grid redistribution, automatic remapping, elliptic refinement and grid adaptation. The development of a procedure to identify "optimal " domain decomposition criteria by coupling the developed grid generation ' tools with various CFD analysis codes is initiated. oDTIC,. • rIE-CTE