Abstract
The purpose of this paper is the numerical study of the effects of the fluid interaction with the blades of the working bodies of the renewable energy conversion systems. The paper presents the results of numerical research regarding the influence of the blade shape (straight), the number of blades (2, 3, 4) or the wind speed in the area on the output power of the small capacity wind turbines. The validation of the simulation data was performed by comparison with the experimental data obtained on a Windtrainer Junior laboratory wind energy system. Computed power coefficients are in good agreement with the experimental results. Increasing the efficiency of energy conversion for small wind turbines for their implementation in green farms represents a significant step in the concept of sustainable rural development.
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