Enhancing Performance of Small Capacity Horizontal Axis Wind Turbine using Grooved Linearized-Chord Blades (original) (raw)

Journal of Energy Resources Technology

Abstract

In the current article, E216 airfoil blades with linearized chord of a small-scale horizontal axis wind turbine (SSHAWT) are numerically investigated to enhance the performance of the turbine. The blade is modified by including grooves on its suction side. Three-dimensional RANS simulations are performed with Shear Stress Transport (SST) k-ω as a turbulence model. The computed power-coefficient results are first validated with previous measurements by the present authors on a wind turbine of 1 m rotor diameter at two wind speeds of 6 and 8 m/s. Another validation with measurements from the literature is performed via comparison of the pressure-coefficient distribution along surfaces of E216 airfoil at an angle of attack of 6°. Based on the successful computation, six different rotor models are numerically investigated with different numbers and locations of grooves created along the blade length, from the hub to the tip region, on the blade suction side. The lift and drag coefficien...

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