Effect of Flap on the Wind Turbine-Concentrator Combination

Abstract

Wind energy is a renewable energy resource that can be used to ensure energy sustainability without causing environmental pollution. In this content, many studies are going on to acquire more energy from the wind. One of the methods to increase the energy production rate of the wind turbine is increasing the mass flow rate which moves through the turbine working section. This can be achieved by equipping the turbine with a concentrator. The purpose of this study is to optimize the combinations of the concentrator with flap-wind turbine leading to maximum flow speed at the turbine zone in the concentrator. Results are compared with the single airfoil type concentrator and bare turbine. The 2D CFD analyses combining the Box-Behnken Experimental Design with the Response Surface Method (RSM) are used in the optimization analyses. The actuator porous disc model is used to represent wind turbine in the concentrator. Concentrator with flap increases the flow speed by a factor of 1.2.