Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
COMPARATIVE STUDY OF MESH DENSITY, SOLUTION ALGORITHM AND TURBULENCE MODELS IN AERODYNAMIC CHARACTERISTICS OF A NACA 0012 AIRFOIL
Submission Author:
Rafael Rosario , SP
Co-Authors:
Rafael Rosario, Max William Reis, William Denner Pires Fonseca
Presenter: Rafael Rosario
doi://10.26678/ABCM.COBEM2019.COB2019-0264
Abstract
The study of two-dimensional, incompressible, permanent and turbulent flow over a National Advisory Committee for Aeronautics (NACA) 0012 airfoil at various angles of attack and operating at a Reynolds number of the order of 1E6 is presented. The flow was obtained by solving the continuity equations and Navier-Stokes combined with one of the three turbulence models (k-e, k-w and k-w SST) and validation of these models were obtained by comparing them with the experimental results presented in the literature. The aim of the work was to show the behavior of the airfoil at these conditions and to establish a solution method. The computational domain was composed of two densities of the computational mesh emerged in a structured way, taking care of the refinement of the grid near the airfoil in order to enclose the boundary layer approach. Two algorithms for the pressure-velocity coupling solution were studied. Calculations were done for constant air velocity altering only the angle of attack for every turbulence model tested. The results showed that for moderate Reynolds number, the models of turbulence can be used with certain accuracy for prediction of aerodynamic characteristics.
Keywords
Aerodynamics, Computational fluid dynamics (CFD), Turbulence Model
