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Experimental and numerical analysis of flow around aerodynamic profiles with protuberances and Ahmed bodies.

Abstract

Hydrodynamic tunnels have been applied to several engineering fields since the late 19thcentury, one of their main applications in the understanding of hydrodynamics/aerodynamicsphenomenon in vehicles (of land, air or naval nature). In the early 2000's the constructionof two hydrodynamic tunnels began at the Mechanical Engineering Department, UNESP- Ilha Solteira. Two projects continue others research previously done in the laboratory offlows visualization by making use of these tunnels. Both the projects are experimental inthe aerodynamics field: the first one uses visualization techniques, developing experimental trials to understand, investigate and study the hydrodynamic of Jubart wales' flipperswhich protuberances in the attack board, resulting of thousands of years of evolution andadaptation, may be relevant in performance gain at the aerodynamic field. The secondproject faces the automotive industry, with experimental trials using benchmarks (Ahmed bodies), investigating turbulent mats and it's impact and implication in vehicularaerodynamics, once Ahmed bodies resemble the shape of trucks/trains. This projectintend to study geometric configurations as the disposition of the bodies in tandem, re-producing operational conditions of vehicle train. The experiments will be realized in avertical hydrodynamic tunnel and a horizontal hydrodynamic tunnel, respectively. Thesetwo studies will be accompanied by numerical simulations via CFD in order to reproducethe experimental tests to be used in the understanding of the observed physical phenomena and thus to propagate their results in engineering applications associated with theproposed research. (AU)

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