Usage of advanced thick airfoils for the outer part of very large offshore turbines

Grasso, Francesco; Ceyhan, O.

doi:10.1088/1742-6596/524/1/012030

Cited by 2 publications

(1 citation statement)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A Bézier curve provides sufficient freedom for the airfoil shape, while ensuring that the curve is smooth in shape such that sharp variations in the airfoil contour are avoided. For these reasons, Bézier curves are commonly used to generate airfoil shapes in optimization routines[78][79][80][81]95].…”

mentioning

confidence: 99%

The Multi-Objective Design of Flatback Wind Turbine Airfoils

Miller¹

View full text Add to dashboard Cite

With the ever increasing lengths of today's wind turbine rotor blades, there is a need for airfoils which are both aerodynamically, and structurally efficient. In this work, a multi-objective genetic algorithm coupled with XFOIL was developed to design flatback wind turbine airfoils. The effect of the aerodynamic evaluator, specifically lift-to-drag ratio, torque, and torque-to-thrust ratio, on the airfoil shape and performance was examined. Under the specified set of constraints and objectives, notable differences, particularly in the levels of lift and roughness insensitivity, were observed.Further analysis, employing the Taguchi method, was performed to determine how various parameters impact the design outcome. The obtained knowledge was used to design a wind turbine specific airfoil family which has comparable, or superior structural and aerodynamic performance as compared to airfoils found in the literature. A wind tunnel experimental set-up was developed at the Carleton University LowSpeed Wind Tunnel for the 2D testing of airfoils. Good agreement between the results obtained at Carleton University and other publicly available data indicates that the set-up is capable of producing meaningful data. A select airfoil, designed by the current author, was tested at Carleton University and its performance is compared to the numerical predictions of XFOIL. Differences in the stall and post-stall regions of the XFOIL predictions are highlighted, and emphasize the importance of wind tunnel testing in the airfoil design process.iii

show abstract

mentioning

confidence: 99%