Table of Contents
International Scholarly Research Notices
Volume 2015, Article ID 402358, 11 pages
Research Article

Computational Investigations on the Effects of Gurney Flap on Airfoil Aerodynamics

1Department of Aerospace Engineering, PEC University of Technology, Sector 12, Chandigarh 160012, India
2Department of Mechanical Engineering, IIT Madras, India
3Department of Mechanical Engineering, BITS-Pilani, Hyderabad Campus, Jawahar Nagar, Shameerpet Mandal, Hyderabad, Telangana 500078, India

Received 16 June 2014; Revised 2 December 2014; Accepted 3 December 2014

Academic Editor: Sergey Utyuzhnikov

Copyright © 2015 Shubham Jain et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The present study comprises steady state, two-dimensional computational investigations performed on NACA 0012 airfoil to analyze the effect of Gurney flap (GF) on airfoil aerodynamics using k-ε RNG turbulence model of FLUENT. Airfoil with GF is analyzed for six different heights from 0.5% to 4% of the chord length, seven positions from 0% to 20% of the chord length from the trailing edge, and seven mounting angles from 30° to 120° with the chord. Computed values of lift and drag coefficients with angle of attack are compared with experimental values and good agreement is found at low angles of attack. In addition static pressure distribution on the airfoil surface and pathlines and turbulence intensities near the trailing edge are present. From the computational investigation, it is recommended that Gurney flaps with a height of 1.5% chord be installed perpendicular to chord and as close to the trailing edge as possible to obtain maximum lift enhancement with minimum drag penalty.