Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
RANS SIMULATION OF THE WAVY LEADING EDGE PHENOMENA AT HIGH REYNOLDS NUMBER REGIME
Submission Author:
Rafael Rosario , SP
Co-Authors:
Rafael Rosario, William Denner Pires Fonseca, Ricardo Galdino da SIlva, Adson De Paula
Presenter: Rafael Rosario
doi://10.26678/ABCM.COBEM2019.COB2019-0960
Abstract
Considering the lack of data on the performance of wavy leading edge airfoils at high Reynolds numbers regime and intending to contribute to this fast growing research topic, the present work aims to provide a numerical investigation on this phenomenon at Reynolds number equal to 3X106. We use RANS (Reynolds Average Navier-Stokes) simulations to invest the flow over configuration with and without wavy leading edge at high Reynolds. We use an infinite wing formed by NACA 0021 profile as baseline geometry. The wavy leading edge has an amplitude equal to 3% of mean aerodynamic chord and a wavelength equal to 11% of mean aerodynamic chord. Initially, studies for the validation of numeric parameters such as turbulence model and computational mesh were performed and compared with literature data. We analyze the pressure distribution, the shear stress lines on the wing surface, and aerodynamics coefficients to achieve a better understanding of the flow features. The comparisons between the straight leading edge and the wavy leading edge showed that the second generated the higher maximum lift coefficient. The present results also suggest that, at an angle of attack near the stall, the configuration with wavy leading edge generates a drag coefficient bigger than the straight leading edge.
Keywords
Wavy Leading Edge, CFD analysis, RANS Simulation
