Smart Morphing Blade for Vertical Axis Wind Turbines

Abstract eng:
The coefficient of power CP generated by a Darrius vertical axis wind turbine is a function of the blade azimuthal position ș. For a given blade profile and tip speed ratio, there is always a given range of azimuthal position that gives the peak CP. By using a blade with a morphing trailing edge, the blade camber is modified and the effective incidence angle can be controlled at different azimuthal position. The goal is to study the flow around the blade with morphing trailing edge to see which profile at which azimuthal position will result in the highest increase of CP. Three blade profiles are used for the study, blade profiles with deflection angles ... ... ... ... which include the highest negative and positive deflection angles of the actuation range as well as a nearly symmetric profile, respectively.

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