Simulações de escoamento ao redor do corpo de Ahmed via CFD código aberto e comercial

• Autor(a) principal: Almeida, Evelyn Natalie Aguiar de
• Data de Publicação: 2022
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/217298
• topic: Ahmed body; Drag; Hydrodynamic tunnel; Wake; CFD; Corpo de Ahmed; Túnel hidrodinâmico; Arrasto; Esteira

The Ahmed body consists of a reference model (benchmark) used in the automotive industry to validate simulation tools. With complex shapes, cars are very difficult to model while quantifying aerodynamic drag computationally also has its limitations. Thus, the Ahmed body is a simplification of the vehicular geometry being applied to visualization, prediction and understanding of phenomena linked to flows around bodies. The horizontal hydrodynamic tunnel of the Flow Visualization Laboratory of the Faculdade de Engenharia de Ilha Solteira, FEIS-UNESP is used for experimental tests in order to understand and investigate the hydrodynamics of the flow over Ahmed bodies with a focus on the visualization of turbulent wakes. However, the data generated are, in short, qualitative. Therefore, for the flow and its interaction with the surface of the body under study to be correctly obtained and correspond to the real physical phenomenon, it is necessary to validate the computational numerical model, where it is possible to obtain qualitative (visualization) and quantitative data such as force of drag and velocity profiles, for example. Free software in the scope of Computational Fluid Dynamics (CFD) OpenFOAM, as well as the closed software SolidWorks Flow were used for the discretization and numerical solution of the proposed problem, linked to the comparison of the results obtained with those collected in the horizontal hydrodynamic tunnel, as mentioned. The analyzes were performed using numerical methods that include establishing simulation criteria via CFD in order to obtain data and determine the flow pattern around the established body geometries.