Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Flows over immersed bodies using the Fourier pseudospectral method
Submission Author:
Laura Albuquerque , PE , Brazil
Co-Authors:
Laura Albuquerque, Mariana Villela
Presenter: Laura Albuquerque
doi://10.26678/ABCM.COBEM2023.COB2023-0066
Abstract
Numerical methods are considered powerful resources in solving problems of interest in engineering, since they can deal with nonlinear behaviors and complex geometries, in addition to working with different equations simultaneously. In computational fluid dynamics (CFD), these methods are the central means of solution. The present work proposes the extension of a computational methodology known as IMERSPEC, to carry out numerical simulations of flows over airfoils. This methodology is based on the coupling of the Fourier pseudospectral method and the immersed boundary method, which feature high numerical convergence rates and high accuracy, associated with a low computational cost. Methods with these properties are of great interest to CFD scholars, since, by definition, the governing equations of fluid mechanics phenomena, such as the Navier-Stokes equations, are nonlinear, complex, and coupled, there is no general analytical solution. With IMERSPEC's validation of fluid-structure interaction problems, it will even be possible to numerically simulate specific problems involving wind turbine blades, contributing to the expansion of this energy source. The results here obtained, for the profiles NACA 0002 and NACA 0008, indicate the great capacity of the algorithm and of the physical models used for the numerical simulation of complex flows with low Reynolds numbers.
Keywords
Computational fluid dynamics (CFD), flow over airfoils, Fourier Pseudo-Spectral methodology, Immersed Boundary Method
