Accession Number : ADP001953

Title :   The Efficient Solution of Transonic Wing Flow Fields,

Corporate Author : NATIONAL AERONUATICS AND SPACE ADMINISTRATION MOFFETT FIELD CA AMES RESEARCH CENTER

Personal Author(s) : Holst,Terry L. ; Subramanian,N. R. ; Thomas,Scott D.

Report Date : 1983

Pagination or Media Count : 13

Abstract : An evaluation of the transonic-wing-analysis computer code TWING is presented. TWING utilizes a fully implicit, approximate-factorization iteration scheme to solve the full-potential equation in conservative form. A numerical elliptic-solver grid-generation scheme is used to generate the required finite-difference mesh. Several wing configurations results have been analyzed, and comparisons of computed data. Results indicate that the code is robust, accurate (when significant viscous effects are not present), and efficient. TWING generally produces solutions an order of magnitude faster than other conservative, full-potential codes using successive-line overrelaxation. The present method is applicable to a wide range of isolated wing configurations, including high-aspect-ratio transport wings and low-aspect-ratio, high-sweep, fighter configurations. (Author)

Descriptors :   *Transonic flow, *Flow fields, Algorithms, Wings, Aspect ratio, Finite difference theory, Computer programming, Boundary layer

Distribution Statement : APPROVED FOR PUBLIC RELEASE