Abstract Wing-in-Ground vehicles and aerodynamically assisted boats take advantage of increased lift and reduced drag of wing sections in the ground proximity. At relatively low speeds or heavy payloads of these craft, a flap at the wing trailing-ground-effect flow id numerically investigated in this study. The computational method consists of a steady-state, incompressible, finite volume method utilizing the Spalart-Allmaras turbulence model. Grid generation and solution of the Navier-Stokes equations are completed flow with a flap, as well as ground-effect motion without a flap. Aerodynamic forces are plain flap. Changes in the flow introduced with the flap addition are also discussed. Overall, the use of a flap on wings with small attack angles is found to be beneficial for small flap deflections up to 5% of the chord, where the contribution of lift augmentation exceeds the drag increase, yielding an augmented lift-to-drag ratio
Aerodynamic characteristics of NACA 4412 airfoil sction with flap
2009
Article (Journal)
English
Aerodynamic characteristics of NACA 4412 airfoil section with flap in extreme ground effect
DOAJ | 2009
|EXPERIMENTAL STUDY OF A NACA 4412 AIRFOIL WITH MOVABLE GURNEY FLAP
British Library Conference Proceedings | 2011
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