Author : Manjunatha Patil 1
Date of Publication :26th May 2017
Abstract: In this performance we have executed the computational analysis on aerofoil to determine the effect of gurney flap on lift and drag performance of naca0012. A Gurney flap is a flat plate of order from 1 to 2% of the aerofoil chord length, aligned vertically to the chord length and positioned on the aerofoil pressure side at the rear end. This work involves a steady state, in-compressible Navier-Stokes equation solver and two dimensional CFD calculations for subsonic flow over a naca0012 aerofoil at different angle of attack and maintained at high Reynolds number at 3x are conferred using the unique equation spallart-allamaras turbulence model. Adopting a 3.0% chord length Gurney flap enhances the coefficient of lift gurney flap height preferred. The computed solutions display the detail picture of the flow system at trailing edge and give a feasible evidence for the enhanced aerodynamic function. The computational results describe the details of the flow nature at the trailing edge and provide feasible information for the increased aerodynamic performanc
Reference :
-
- Liebeck, R.H., Design of subsonic airfoils for high lift. J. Aircraft 15 (1978) 547–561.
- Kuchemann, D., Inviscid shear flow near the trailing edge of an airfoil. Z. Flugwiss. 15 (1967) 292–294. EFFECTS OF GURNEY FLAPS ON A NACA0012 AIRFOIL 39
- Giguère, P., Lemay, J. and Dumas, G., Gurney flap effects scaling for low-speed airfoils. AIAA Paper 95-1881(1995).
- Katz, J. and Largman, R., Effect of 90 degree flap on the aerodynamics of a two-element airfoil. J. Fluids Engrg. 111 (1989) 93–94.
- Katz, J. and Dykstra, L., Study of an open-wheel racing car’s rear-wing aerodynamics. Paper presented at the SAE International Congress and Exposition, Detroit, MI, February 27– March 3. SAE Paper 890600 (1989).
- Jeffrey, D., Zhang, X. and Hurst, D.W., Aerodynamics of Gurney flaps on a singleelement high lift wing. J. Aircraft.
- Bloy, A.W. and Durant, Aerodynamic characteristics of an aerofoil with small trailing edge flaps.
- Storms, B.L. and Jang, C.S., Lift enhancement of an airfoil using a Gurney flap and vortex generators. J. Aircraft 31 (1994) 542–547.
- Pailhas, G., P. Sauvage, I. Touvet and E. Coustols, “Flow field in the vecinity of of a thick cambered trailing edge,” 9th International Symposium on Applications of Laser Techniques to Fluid Mechanics, 13-16 July