Study on Performance of Wind Mill by Adding Winglet in Turbine Blade: Virtual Analysis

Abstract

This research paper discusses the performance evaluation of wind mill by attaching winglet in turbine blade. Five winglet parameters namely winglet height, curvature radius, cant angle, sweep angle and twist angle are considered in this analysis, to get hold of how these parameters have influenced on lift coefficient and drag coefficient. Fifteen combinations of winglet model were modeled in Solid works and virtual analyses were carried out to identify the best winglet model that yield higher power output in the wind mill. Aerodynamic analysis was also carried out to study the performance of winglet at the tip of the rotor blade to account for the fluid forces with blades comprising different winglet configurations. The numerical investigation revealed that by adding a winglet to the base line turbine blade increases the co-efficient of lift by 2.3% resulting 2% to 3% rise in power output, and the reductions in vortex formation at tip of the blade in the total drag by 10.4%. From the analysis results, it is found that the sweep angle, cant angle and twist angle have influenced the windmill performance to extent of 2% increase, the coefficient of lift and 6% decrease in the coefficient of drag.