Design and Aerodynamic Performance Analysis of Biomimetically Modified Windmill Blade
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Date
2020-04-30
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MPUT, UDAIPUR
Abstract
Present research has been motivated from the need of generation of more power. The objectives of present work are focused towards designing a new biometrically modified windmill blade and its aerodynamic performance analysis.
Three different model of new blade have been designed by adding a special feature on leading edge of the windmill blade called as tubercles similar to those found on the flippers of humpback whales. The tubercles are having variation in amplitude but constant span, chord length and wave length. The magnitude of wave length and amplitude has been selected as suggested in literature on the NACA 0012 which is selected as base geometry.
The modified blades and the unmodified blades were analyzed for their aerodynamic performance in ANSYS FLUENT. The validation of the CFD simulations has been done by comparing the results of the unmodified blade with those available in the literature. It has been found that biomimetically modified blades give increase in lift and drag coefficients as compared to conventional blades. As the angle of attack increases the pressure from leading edges shifts on lower surface of the blades. Also, as the angle of attack increases, increase in lift and drag coefficient is observed for the modified blades.
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Design and Aerodynamic Performance Analysis of Biomimetically Modified Windmill Blade
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Verma A. And Nandwana B.P.