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The purpose of this paper is to explore and define an adequate numerical  setting for the computation of aerodynamic performances of wind turbines of  various shapes and sizes, which offers the possibility of choosing a  suitable approach of minimal complexity for the future research. Here,  mechanical power, thrust, power coefficient, thrust coefficient, pressure  coefficient, pressure distribution along the blade, relative velocity  contoure at different wind speeds and streamlines were considered by two  different methods: the blade element momentum (BEM) and computational fluid  dynamics (CFD), within which three different turbulence models were  analyzed. The estimation of the mentioned aerodynamic performances was  carried out on two different wind turbine blades. The obtained solutions  were compared with the experimental and nominal (up-scaled) values,  available in the literature. Although the flow was considered as steady, a  satisfactory correlation between numerical and experimental results was  achieved. The comparison between results also showed, the significance of  selection, regarding the complexity and geometry of the analyzed wind  turbine blade, the most appropriate numerical approach for computation of  aerodynamic performances.

Comparative analysis of numerical computational techniques for determination of the wind turbine aerodynamic performances