A study on the wind blade performance using blade element momentum theory

In this research paper, the aerodynamic performance of blade horizontal axis wind turbine has been investigated numerically based on Blade Element Momentum (BEM) method. The in analysis is divided into several computational elements, where assumed no interaction between elements. primary objective to analyze under certain initial and boundary conditions. addition investigate effect geometrical parameters that include radius tip, twist, lift-to-drag ratio induction factors as dynamic blade. It was determined design for a built using NACA4415 airfoil shape. found total thrust force, torque power would be generated by selected are 3739.5 N, 1827.0 N.m 29.9 kW, respectively. results also showed reducing number elements an underestimation predictions. Therefore, needs adequately reliable solution BEM equations. maximum value differential along radial position span occurred at r/R=0.8. Furthermore, percentages increment axial factor when change from tip root 62%. While, tangential decreased 88% same change.