Comprehensive Analysis with Enhanced Resolution of HAWT Blade using CFD
Keywords:Renewable energy, Blade element momentum theory (BEM), Computational fluid dynamics (CFD), Blade angle, Horizontal axis wind turbine (HAWT)
Energy is an important aspect for all countries. Due to the overexploitation of resources, nonrenewable resources, such as fossil fuels, are depleting day by day. This calls for alternative power sources, such as wind energy. Wind energy is a clean and inexhaustible source of energy. One of the ways of harvesting this energy is using wind turbines, which transform the kinetic energy of wind into electrical power output. Wind turbines face many problems, such as low wind hours, design issues, and so on.
The main focus of this work is to find the optimum blade angle of turbine blades, in order to produce the maximum power output, even at low wind hours. In this study, CFD analysis is done on a 5 MW wind turbine blade at wind velocities 3, 12.5 and 25 m/s, which are the cut in, rated, and cut out velocities of wind turbines, respectively. The range of angles under consideration varies from 20 to 89 °. A 3D model of the blade is analyzed using ANSYS Fluent 19.0. The optimum blade angle is identified, and the characteristics of the curves of blade angles, with respect to different parameters, are obtained.
- Optimum Blade angle for better moment
- Pressure and velocity Characteristics at various blade angles
- 5MW HAWT blade moments for wind velocity of 3,12.5 and 25 m/s
- The maximum moment is obtained at an angle 82 degree at various wind velocities
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