This book is based on the concept of modification on the straight-bladed vertical axis wind turbine and its effects on the performance of the turbine. Aerofoil profile modifications being investigated include semicircular dimple, Gurney flap, and the combination of dimple and Gurney flap. This book is focused on the values of coefficient of lift, coefficient of drag, aerofoil Velocity and aerofoil force as these are the vital parameters, which are...