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Profile of the FIN-MP airfoil was used as the basic section of vertical axis wind rotor blade. Emphasis was placed on the aerodynamic performance of the wind rotors with different length? of blade chord, while the blade height, rotor diameter and blade's spiral angle are respectively uniform for the studied rotors. Three-dimensional and unsteady simulation was carried out for the flow field around...
In this paper, NACA0018 airfoil is proposed to be open able at low tip speed ratio to work as drag device and then be closed to take the normal blade geometry of the airfoil at higher tip speed ratios to work as lift device. A moving mesh technique was used to analyze 2D unsteady flow around VAWT modeled with airfoils opening angles set to 60, 45, 30 and 15 degrees from main axis using CFD solver...
The blade aerodynamic performance of the NREL Phase VI rotor is studied using the full three dimensional Navier-Stokes equations and the κ-ω SST turbulence model under non-yawed condition at the wind speeds of 7m/s and 10m/s. Comparisons with NREL Phase VI experimental results are presented with respect to the pressure distributions, the normal force coefficients and the tangent force coefficients...
Little attention has been paid to the study of optimum variable-pitch control laws in the range of low tip speed ratios, as traditional Darrieus turbines operate in the range of high tip speed ratios. In this paper, we obtain the aerodynamic coefficients of the plate airfoil by the method of computational fluid dynamics (CFD). Then, an aerodynamic model is built based on Blade Element Theory, and...
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