Influence of the Solidity Ratio on the Small Wind Turbine Aerodynamics
| Autor: | Karol Zawadzki, Wojciech Śmiechowicz, Małgorzata Stępień, Michał Tarkowski, Anna Baszczyńska |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
lcsh:GE1-350
Chord (geometry) Wind power Small wind turbine business.industry Blade solidity Rotor (electric) 020209 energy 02 engineering and technology Aerodynamics 01 natural sciences 010305 fluids & plasmas law.invention law 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Solidity business lcsh:Environmental sciences Mathematics Wind tunnel Marine engineering |
| Zdroj: | E3S Web of Conferences, Vol 242, p 03006 (2021) |
| ISSN: | 2267-1242 |
| DOI: | 10.1051/e3sconf/202124203006 |
| Popis: | Increasing popularity of individualised electricity generation from wind by prosumers creates a strong demand for profitable and highly efficient small wind turbines. This paper investigates the influence of rotor blade solidity parameter on device efficiency in hope of determining its optimal value as a part of the development process of the GUST small wind turbine. The study involved experimental analysis in the wind tunnel and numerical simulations performed in QBlade software. Different solidities of the rotor were achieved by alteration of (1) number of blades and (2) chord distribution along the blade span. The increase of rotor solidity resulted in augmentation of the aerodynamic efficiency in both approaches. The elongation of the chord by 33% in a 3-bladed rotor resulted in a bigger power coefficient increment than addition of a 4th blade with original chord distribution. Even though the solidity was the same, the 3-bladed rotor performed better, possibly due to lower form drag. The results emphasize the importance of the rotor solidity optimization during the small wind turbine rotor development and may significantly influence overall power output. |
| Databáze: | OpenAIRE |
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