Combined experimental and numerical study on the near wake of a Darrieus VAWT under turbulent flows
| Autor: | Francesco Balduzzi, Alessandro Bianchini, T. De Troyer, Gianni Bartoli, Tommaso Massai, A. Carbó Molina, Giovanni Ferrara |
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| Přispěvatelé: | Engineering Technology, Faculty of Engineering, Industrial Sciences and Technology, Acoustics & Vibration Research Group, Thermodynamics and Fluid Mechanics Group |
| Rok vydání: | 2018 |
| Předmět: |
History
business.industry Turbulence 020209 energy 02 engineering and technology Mechanics Computational fluid dynamics Wake Physics and Astronomy(all) 7. Clean energy Computer Science Applications Education 020401 chemical engineering 11. Sustainability Darrieus wind turbine turbulence wind tunnel CFD 0202 electrical engineering electronic engineering information engineering Environmental science 0204 chemical engineering business Wind tunnel |
| Zdroj: | Journal of Physics: Conference Series |
| ISSN: | 1742-6588 0720-3926 0309-524X 0195-0738 0376-0421 |
| DOI: | 10.1088/1742-6596/1037/7/072052 |
| Popis: | Small Darrieus Vertical-Axis Wind Turbines (VAWTs) are presently seen as a relevant research topic for the wind energy community, since they are thought to perform better than horizontal-axis rotors in the complex and highly-turbulent flow typical of the urban environment. Indeed, a preliminary wind tunnel test campaign on a H-Darrieus VAWT showed a significant increase of the performance for high turbulence levels. The present study analyses in detail the near wake of the turbine in the same turbulent conditions, enabling a better insight on the reasons of this power increase, and on the means to take advantage of it. Near-wake measurements are also benchmarked with a CFD simulation of the entire wake, in order to match the experimental wake measurements with the detachment of flow structures observed in CFD simulations. By doing so, a deeper and useful insight on the reasons why VAWTs perform better in turbulent environments is gained. |
| Databáze: | OpenAIRE |
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