Accession Number : ADP001943

Title :   An Interactive Approach to Subsonic Flows with Separation,

Corporate Author : MCDONNELL DOUGLAS CORP LONG BEACH CA DOUGLAS AIRCRAFT DIV

Personal Author(s) : Cebeci,Tuncer ; Clark,R. W.

Report Date : 1983

Pagination or Media Count : 7

Abstract : A viscous-inviscid interaction procedure is presented for computing incompressible separation bubbles in two-dimensional flow over lifting airfoils. The scheme consists of an inviscid-flow method, based on the technique of conformal mapping, together with an inverse boundary-layer method which makes use of the Cebeci-Smith algebraic eddy-viscosity formulation together with the Mechul-function approach. The coupling between the viscous and the inviscid calculations is achieved through the use of a set of interaction coefficients computed using the conformal mapping method. These coefficients define the relationship between the boundary-layer thickness, represented by means of blowing distribution on the airfoil surface, and the external inviscid velocity distribution.

Descriptors :   *Subsonic flow, *Flow separation, Incompressible flow, Two dimensional flow, Boundary layer, Airfoils, Lifting surfaces, Inviscid flow, Viscous flow, Interactions

Distribution Statement : APPROVED FOR PUBLIC RELEASE