Accession Number : ADP000998

Title :   Generation of Three-Dimensional Boundary-Fitted Curvilinear Coordinate Systems for Wing/Wing-Tip Geometries Using the Elliptic Solver Method,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION HAMPTON VA LANGLEY RESEARCH CENTER

Personal Author(s) : Thames,Frank C.

Report Date : 1982

Pagination or Media Count : 22

Abstract : A three-dimensional elliptic solver technique is utilized to generate surface-fitted coordinates about wing/wing-tip configurations. The method is applicable to wings of arbitrary section profile and camber, leading-edge sweep, taper ratio, and spanwise thickness variation. The basic theory of three-dimensional elliptic mappings is developed along with a method to compute interior coordinate control functions. Examples of grids generated about several wing/wing-tip geometries are given. A 49 x 33 x 17 grid requires about 3 minutes of CPU time on a CYBER 203 computer. (Author)

Descriptors :   *Grids(Coordinates), *Transformations(Mathematics), *Partial differential equations, *Computer applications, *Wing body configurations, *Wing tips, Boundaries, Fitting functions(Mathematics), Navier stokes equations, Computations, Geometry, Finite difference theory

Distribution Statement : APPROVED FOR PUBLIC RELEASE