Abstract
Wind turbine blades are shaped to generate the maximum power from the wind at the minimum cost. The shape of rotor blade plays an important role in determining the overall aerodynamic performance of a horizontal axis wind turbine. The focus is on research regarding a kind of Passive flow control (PFC) as it is applied to alter wind turbine performance and loads. Boundary Layer Fence (vortex generator) , a well known passive flow control device, which is previously used for aircraft application for stopping the 3Dimensional nature of the flow, is employed for wind turbine application in this work. The passive flow control is installed in different radial locations viz., r/R= 0.3, 0.4, 0.5, 0.6, 0.7and0.8 and the variation of Coefficient of Lift (Cl) and Coefficient of Drag (Cd) for various cross sections were reported. In all these locations, aerodynamic noise is also computed in the downstream and it is also discussed. Results show that installing a vortex generator increases the generated torque and power up to a maximum of 7.4% and 11.77% respectively the measured wind turbine noise reduced up to 12.97%.
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