Investigating the Performance of a Novel Multi-Element Airfoil Concept Using Numerical Analysis

Separation control is one of the trending topics recently for Vertical Axis Wind Turbine (VAWT) applications, flow separation that occur on suction side an airfoil a major limitation VAWTs starting and power coefficient; passive has been attracting wind energy research community recently. The principle objective this paper to investigate effect multi-element aerodynamic characteristics at wide range angles attack Reynolds number 140,000. multi element modification implemented by replacing baseline with two members within same geometrical profile original airfoil, cambered symmetrical were investigated in work. sections made NACA 4412 while consisted 0015 airfoil. 0021. numerical investigation was executed using computational fluid dynamics (CFD) usage ANSYS FLUENT turbulence model used k-ε Standard. results present show optimized configurations have better performance than high attack. A significant delay observed resulted increase 200% glide ratio 100% symmetric members. These are expected low speed turbines. In addition, potential benefit vertical axis turbines, whereas generates lift wider