Modelling and Analysis of Domestic Windmill Turbine Blade

Abstract

Abstract: Blade is the key component to capture wind energy. It plays a vital role in the whole wind turbine. The optimum twist of a windmill turbine blade is analyzed on the basis of elementary blade- element theory. Maximum efficiency of power is achieved when the blade is twisted consistently with a program that depends on variation of sectional lift and drag coefficients with angle of attack. For a typical airfoil cross-section, optimum angle of attack decreases from maximum lift coefficient angle of attack at the blade root to greater than 80 percent of this value at the blade tip

The modelling is done in SolidWorks and the static and dynamic analysis is carried out by using ANSYS software. The materials used are stainless steel, e-glass epoxy and grey cast iron. The blade is subjected to FEA studies to demonstrate its ability to withstand the extreme loading conditions as defined in the international offshore wind standards. The results will have acceptable performance with regard to total deformation, directional deformation, equivalent stress, normal and shear stress.

Index Terms: Windmill, efficiency, epoxy resin