Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
NUMERICAL SHAPE OPTIMIZATION OF AIRFOIL USING IMERSPEC AND RESPONSE SURFACE METHODOLOGIES TO FLOW AT LOW REYNOLDS NUMBER
Submission Author:
Felipe Pamplona Mariano , GO , Brazil
Co-Authors:
Lucas Monteiro, Andreia Aoyagui Nascimento, Felipe Pamplona Mariano
Presenter: Felipe Pamplona Mariano
doi://10.26678/ABCM.COBEM2019.COB2019-2226
Abstract
The objectives of the present work is to evaluate the influence of the shape of the airfoils, determining their aerodynamic parameters as lift and drag coefficients, aerodynamic efficiency and qualifying the fluid dynamics generated. For this purpose, the fluid flow over NACA 0008 and NACA 2408 were simulated for Rec equal to 2000, using the IMERSPEC methodology, resulting from the coupling of the Fourier Pseudo-Spectral Method and the Immersed Boundary Method. In order to guarantee convergence between the results of the present work and the data available in the literature the mesh refinement and changes in number of numerical interactions are made, by resulting an improvement of the accuracy. The occurrence of phenomena such as the intensification of the adverse pressure gradient and the vortex shedding were observed. Finally, using the Response Surface Methodology (RSM), the NACA 2408 airfoil shape optimization was proposed. These procedures resulted in an increase in aerodynamic efficiency. Based on these analyzes, one can show the advantage of the IMERSPEC methodology to understand the behavior of flow over aerodynamic bodies. Associating it with the RSM methodology allowed to estimate, with reliability, the optimal design of new airfoil profile, without the need to perform many numerical simulations
Keywords
Computational Fluid Dynamics, flow over airfoils, Optimization, Response Surface Methodology (RSM)
