Computers and Fluids
Book Author Shengyi Wang a,b,Derek B. Ingham b, Lin Mab, Mohamed Pourkashanian, Zhi Tao
DescriptionWith the depletion of fossil fuel energy, and the increasing acknowledgement of the importance of developing environmentally friendly energy resources, the wind turbine, as the main technology to extract energy from wind, has been increasingly investigated. From the perspective of urban applications, Vertical Axis Wind Turbines (VAWTs) have many advantages over the widely used conventional Horizontal Axis Wind Turbines (HAWTs). However, VAWTs suffer from many complicated aerodynamical problems, of which dynamic stall is an inherent phenomenon when they are operating at low values of tip speed ratio, and this has a significant impact on vibration, noise, and power output of the VAWTs [6]. Therefore, it is crucial to have a good understanding of the mechanism of dynamic stall, in particular at relatively low Reynolds number (Rec 105) appropriate to
the urban applications of VAWTs which are not fully understood.