Abstract
This paper takes the blades of a large horizontal axis wind turbine as the research object, selects NACA series airfoil elements for combination, arranges and distributes them according to the thickness and curvature of each airfoil, and generates a new blade that is different from a single airfoil. The aerodynamic performance of the two blades was compared and analyzed by using Qblade software to verify the effectiveness of the method, and the wind energy utilization rate was improved while ensuring the strength of the blade roots.
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