Numerical investigation of the aerodynamic characteristics of a coupling of the three blades VAWT with a movable vanes

Abstract

Rising demand for energy due to industrial development has led to the depletion of fossil fuels, which adversely affect climate change due to fossil fuel emissions. Wind energy is one of the most available popular sources of renewable energy are rapid growth. At the present vertical axis wind turbine (VAWT) is one of the kind of machines that used to produce electricity. The aerodynamics of a VAWT are very complex due to the dynamic stall when the blade of the turbine is an airfoil. Low starting torque is the wind turbine disadvantage when the airfoil is used as a blade. A computational fluid dynamic CFD is used to simulate the aerodynamic characteristics of the current model (coupling of the three blades VAWT with a movable vane). (SST) k-ω turbulence and finite volume method were used to solve the aerodynamics of the flow around the current model by using ANSYS FLUENT 16.1 software’s. The finding results from the numerical simulation show that the drag coefficient (Cd), static pressure drop and starting...