A wind turbine refers to a type of machine that converts kinetic energy into electrical energy. It converts wind energy into electricity by utilizing the aerodynamic forces, which involve lift and drag. These forces are generated by the rotor blades, which function similar to rotor blade of helicopter or wing of an airplane. Wind turbines are a significant source of intermittent renewable energy, which can help in decreasing the reliance on fossil fuels and thereby reducing the energy costs. Smaller wind turbines are employed for tasks such as powering traffic warning signs and battery charging for caravans or boats. Larger turbines can aid household power supply and their extra energy be added back to the electrical grid. This book aims to shed light on some of the unexplored aspects of wind energy aerodynamics and the recent researches on this topic. It contains a detailed explanation of the aerodynamics utilized by wind turbines. The book will help the readers in keeping pace with the rapid changes in this area of renewable energy.