Detalhes bibliográficos
| Ano de defesa: |
2020 |
| Autor(a) principal: |
Cardoso, Flávia de Melo Ribeiro
 |
| Orientador(a): |
Mariano, Felipe Pamplona
|
| Banca de defesa: |
Mariano, Felipe Pamplona,
Fagundes Neto, Marlipe Garcia,
Vasco, Joel Roberto Guimarães |
| Tipo de documento: |
Dissertação
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Universidade Federal de Goiás
|
| Programa de Pós-Graduação: |
Programa de Pós-graduação em Engenharia Ambiental e Sanitária (EEC)
|
| Departamento: |
Escola de Engenharia Civil e Ambiental - EECA (RG)
|
| País: |
Brasil
|
| Palavras-chave em Português: |
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| Palavras-chave em Inglês: |
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| Área do conhecimento CNPq: |
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| Link de acesso: |
http://repositorio.bc.ufg.br/tede/handle/tede/10961
|
Resumo: |
Wind tunnel is an equipment used to study aerodynamics, whose main function is to provide high quality air flow in its test section. It makes possible to study the effects of air flow around various aerodynamic or non-aerodynamic models (airfoils, blunt bodies, anemometric towers, reduced models of civil structures and others). The qualities to be satisfied when using a wind tunnel are: a low level of turbulent intensity at the entrance of its test section, meaning uniformity in the speed and pressure fields and the height of the boundary layer formed along the length of the test section. The knowledge of both variables for the various ranges of use of the wind tunnel guarantees the appropriate boundary conditions for the experiments and makes it a reliable measuring equipment. For example, a high turbulent intensity can interfere considerably in the transition of the boundary layer, generating undesirable effects. Furnas Centrais Elétricas S.A. acquired two wind tunnels, the purpose of which is the in-depth study of the wind power generation system. To know the characteristics of the tunnels is essential in the exchange of technical and scientific information, in the comparison of experimental results, in the extrapolation of model parameters to the real scale and in the simulation of tests in Computational Fluid Dynamics. Through experimental measures, using Pitot tubes and statistical tools such as experimental planning techniques and analysis of variance (ANOVA), the turbulent intensity of approximately 0.5% was found at wind tunnel (TV1) for speeds above 12.0m/s and for speeds below 12.0m/s, the turbulent intensity increased up to 3.5% for speeds around 5.0m/s. A method of controlling the height of the boundary layer is also presented, in order to be able to study the wind potential of a given terrain. |
