Design and CFD analysis of Horizontal Axis Wind Turbine Blade with Microtab

Abstract

In the design part of the wind turbine, the blade designing and its aerodynamics play a vital role. The structural analysis and optimisation of these wind blades increase the performance of wind energy. Most importantly, the designing of the wind turbine blade in the Horizontal Axis Wind Turbine (HAWT) are reviewed in this work. Also, the modern wind blade aerodynamic design principles are elaborated along with blade plan size, shape and aerofoil structure profiles. Different airfoil profiles are chosen for modelling of the wind blade to increase the co-efficient of lift generated. The review produces a trial design of the blade and stress distribution analysis is performed on the wind blade for different materials of the blade. This is modelled and analysed by the CATIA and ANSYS software. The concept of Micro tabs are familiar for airfoils used in aircraft wings to control both lift and drag generated on the airfoil. The usage of Micro tabs on wind blades is analysed. The pressure, velocity and turbulence kinetic energy acting on the blade surfaces are entirely studied. This review also provides a new concept of double micro tabs that are arranged on the pressure side of the airfoil structure, which increases lift at lower angles of attack and low wind velocity. Furthermore, the ideal positioning of micro tabs determined for single and double micro tab blade design. A comparison study is produced to determine the flow characteristic of blades with and without micro tabs.