Numerical Investigation Of The Effects Of Split Winglet On Aerodynamic Performance Of Horizontal Axis Wind Turbine: A Case Of Adama I Wind Turbine

Abstract

This Paper Explained Research Which Was Performed Numerically To Evaluate The Effect Of Split Winglet On The Aerodynamic Performance Of Adama I Wind Turbine Blade. Winglets Are Used To Minimize Blade Tip Vortex And Induced Drag On The Blade At Blade Tip. The Study Was Hypothesized, Addition Of Split Winglet On The Conventional Turbine Blades Tip Of Adama I Wind Turbine Was Going To Improve Its Aerodynamic Efficiency Or Not. The Blade Design Was Performed Using Blade Element Momentum (Bem). This Theory Was Used To Optimize The Chord Length And Twist Angle Distributions Of The Blades. A 3d Model of the Turbine Blade without Split Winglet and with 6 Different Configurations of Split Winglet Were Design on Solid works Software. These Winglets Were Designed From Two Different Airfoil Profiles And Three Different Cant Angle, And Rest Of Winglet Parameters Were Same For All Winglets. On The Designed Blades With And Without Split Winglets A Rectangular Flow Domain Was Constructed To Catch The Flow Around The Blade. The Flow Domain And Blade Were Meshed With A Proper Mesh Size For Accurate Numerical Solutions. A Numerical Simulation Was Performed Using Ansys Fluent. This Simulation Was Conducted At Different Angle Of Attacks And Wind Velocities. The Aerodynamic Performance (Lift To Drag Coefficient Ratio) Values Of The Baseline Blade And Blade With Winglets Were Determined. A Comparison On Different Cant Angle And Twist Angle Of Winglet Had Done. The Maximum Aerodynamic Performance Was Recorded By S813 Airfoil Profile, 50o Cant Angle And 10o Twist Angle Winglet At 15 M/S Wind Speed And 0oAngle Of Attack With 5% Lift To Drag Coefficient Ratio Improvement Than Baseline Blade.