Abstract
The aerodynamic modeling of an HAWT (horizontal axis wind turbine) is an essential step in the design of this machine. Generally, the Blade Element Momentum theory (BEM) theory is used. It consists of combining Momentum theory and Blade Element Momentum theory, which makes it possible to solve the equations of aerodynamic forces by an iterative method. This method does not lead to a concordance with the experience. Several studies have tried to introduce corrections to improve the model. The purpose of this study is the design of wind turbine blade by taking into account the corrections of the axial and tangential induction factors. To that end, an iterative method based on Blade Element Momentum theory (BEM) is used and simulations are conducted for NACA airfoil with 5-digit. The study examined blade constructed with only one profile, and blade constructed with two different profiles. Their aerodynamic forces were compared and were shown to increase with the use of the blade built with two different profiles ( NACA63421+NACA63215).
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