Accession Number : ADP007805

Title :   Computations of Unsteady Flows Around Airfoil Sections by Explicit and Implicit Methods Solving the Euler and Navier-Stokes Equations,

Corporate Author : DORNIER LUFTFAHRT G M B H FRIEDRICHSHAFEN (GERMANY)

Personal Author(s) : Gerteisen, Edgar A.

Report Date : MAR 1992

Pagination or Media Count : 13

Abstract : An Euler/Navier-Stokes solution algorithm is presented for unsteady aerodynamic analysis of flows around airfoil sections. Several numerical methods have been involved in the flow solver; beginning with an explicit Runge-Kutta time-stepping scheme it is outlined that for practical handling of many problems the implicit integration schemes are strongly recommended due to their extended stability margin. Two methodological closely connected moving mesh algorithms have been implemented, concerning the mesh adaption for improved accuracy with a minimal number of mesh points, and the body conforming mesh movement which is completely general and can treat realistic configurations.

Descriptors :   *AIRFOILS, *BOUNDARY LAYER FLOW, ACCURACY, AERODYNAMICS, ALGORITHMS, CONFIGURATIONS, INTEGRATION, MESH, STABILITY, TIME, GERMANY, RUNGE KUTTA METHOD, NAVIER STOKES EQUATIONS.

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE