Imen Bel Mabrouk
National Institute of Applied Sciences of Rouen, France
Title: E-BABE-Analysis on the aerodynamic performance of vertical axis wind turbine subjected to the change of the tip speed ratio
Biography
Biography: Imen Bel Mabrouk
Abstract
Flow over Darrieus type straight-bladed vertical axis wind turbine with NACA0021 is analyzed using ANSYS Fluent software. k-ω shear stress transport turbulence model is used for the two dimensional, unsteady simulations. Wind speed is taken as 9 m/s and the rotation of blades is modeled using the sliding mesh technique.
The two-dimensional computational fluid dynamics model is validated with experimental results. The optimum tip speed ratio is achieved, giving the best overall performance.
The effect of the tip speed ratio on the aerodynamic performance of the studied wind turbine in non stationary regime is discussed. Contours plot of the three-bladed Darrieus rotor are also presented and analyzed.
The present study shows that the tip speed ratio directly affects the aerodynamic efficiency and the torque production of the Darrieus type vertical axis wind turbine .