Abstract
Abstract : Subsonic turbulent flow past thin airfoil trailing edges is studied using a finite Reynolds number viscid/inviscid interaction model. Here, the flow in the outer or inviscid region is governed by the equations of linearized potential lflow theory, while that in the inner or viscous region is governed by Prandtl's boundary-layer equations cast in terms of Levy Lees variables. The effects of turbulence are represented using an algebraic turbulence model based on the eddy viscosity concept. The flow in the vicinity of the local strong interaction is determined by iteratively matchng the solutions in the inviscid and viscous regions using a quasi-simultaneous coupling procedure. Turbulent mean flow solutions have been obtained for a range of symmetric and asymmetric wedge shaped trailing edge geometries. Results illustrating the effects of airfoil thickness and loading on the detailed mean-flow behavior in the trailing edge/near wake region are presented. Keywords: Subsonic turbulent mean flow; Viscid/inviscid interaction; Trailing edge/near wake region; Quasi-simultaneous viscid/inviscid coupling procedure.
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