Turbulence intensity behavior in several wind tunnel cross-sectional areas
Considering that more and more wind turbines operate at high turbulent flows, a study of the turbulence intensity (TI) in several wind tunnel cross-sectional areas was done in this paper. A wind tunnel with a test section 15 m long, 3.6 m wide and 2 m high was used; a wooden grid was placed to gener...
| Autores Principales: | Richmond-Navarro, Gustavo, Arias-Arguedas, Carlos, Casanova-Treto, Pedro |
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| Formato: | Artículo |
| Idioma: | Español |
| Publicado: |
Editorial Tecnológica de Costa Rica (entidad editora)
2023
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| Materias: | |
| Acceso en línea: |
https://revistas.tec.ac.cr/index.php/tec_marcha/article/view/6157 https://hdl.handle.net/2238/14514 |
| Sumario: |
Considering that more and more wind turbines operate at high turbulent flows, a study of the turbulence intensity (TI) in several wind tunnel cross-sectional areas was done in this paper. A wind tunnel with a test section 15 m long, 3.6 m wide and 2 m high was used; a wooden grid was placed to generate turbulence and the wind velocity was measured with a hot wire anemometer. To determine if there are significant variations of the TI value, five points (center, up, down, left, and right) at four tunnel cross-sections downstream from the grid were measured. It was determined that the TI varies drastically within the area. An error rate from 3.6 % up to 15.2 % occurred if the TI is considered only at the cross-sectional axis; to truly describe the turbulent flow it is necessary to use the average of the measurements taken in the cross-sectional area. |
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