Estudo comparativo de escoamentos aerodinâmicos turbulentos utilizando CFD

• Autor(a) principal: Martins, Guilherme Moreira
• Data de Publicação: 2019
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Universitário da Ânima (RUNA)
• Texto Completo: https://repositorio.animaeducacao.com.br/handle/ANIMA/8300
• topic: Dinâmica dos fluidos (CFD); Modelagem computacional; Escoamentos aerodinâmicos turbulentos

The development of the aeronautics industry has boosted numerical models over the last few years, both for fluid dynamics and for structural analysis. With this knowledge, the present research aims to study and perform numerical computational analysis for aerodynamic fluids to verify if it corresponds to the theoretical model described in the literature. In addition, this work addresses the numerical analysis using computational fluid dynamics (CFD) solved by the Reynolds averages equation for 2D airfoils. Two models of turbulence are used to compare numerical and experimental results, such as the Spalart Allmaras model and model. The work also addresses the process of creating the computational domain, as well as the process of creating the mesh, and boundary conditions. A more careful analysis of the phenomenon is made in the boundary layer region where the quality of the results and the physics involved are explained. At the end, the numerical and experimental results are compared, so that the numerical convergence for the support and drag is verified. The results were satisfactory to estimate the coefficient of support of the profile, so that the values approximated a lot of the experimental one with an error in the order of 10%, however, for model estimates the model did not converge to the expected values, presenting percentage errors in the order of tens. This is due to wall modeling conditions because the drag value is intrinsically connected to the shear stress value on the wall of the aerofoil.