NASA Technical Reports Server (NTRS) : A pdf

NASA Technical Reports Server (NTRS) : A

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A 3-D laminar and turbulent boundary-layer method is developed for compressible flow over swept wings. The governing equations and curvature terms are derived in detail for a nonorthogonal, curvilinear coordinate system. Reynolds shear-stress terms are modeled by the Cebeci-Smith eddy-viscosity formulation. The governing equations are descretized using the second-order accurate, predictor-corrector finite-difference technique of Matsuno, which has the advantage that the crossflow difference formulas are formed independent of the sign of the crossflow velocity component. The method is coupled with a full potential wing/body inviscid code (FLO-30) and the inviscid-viscous interaction is performed by updating the original wing surface with the viscous displacement surface calculated by the boundary-layer code. The number of these global iterations ranged from five to twelve depending on Mach number, sweep angle, and angle of attack. Several test cases are computed by this method and the results are compared with another inviscid-viscous interaction method (TAWFIVE) and with experimental data

• Creator/s: NASA Technical Reports Server (NTRS
• Date: 10/1/1988
• Year: 1988
• Book Topics/Themes: NASA Technical Reports Server (NTRS), BOUNDARY LAYER FLOW, INTERACTIONAL AERODYNAMICS, LAMINAR FLOW, SWEPT WINGS, TRANSONIC SPEED, TURBULENT FLOW, AIRFOILS, COMPRESSIBLE FLOW, INVISCID FLOW, THREE DIMENSIONAL FLOW, VISCOUS FLOW, Woodson, Shawn H., Dejarnette, Fred R

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