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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
OPTIMIZATION DESIGN METHOD FOR WIND TURBINE AIRFOILS CONSIDERING DIFFERENT ANGLES OF ATTACK OVER NACA 0012
Submission Author:
Eduardo Gamba , SP , Brazil
Co-Authors:
Eduardo Gamba, Rodrigo Palharini
Presenter: Eduardo Gamba
doi://10.26678/ABCM.ENCIT2020.CIT20-0256
Abstract
Energy generation has led the world to deal with serious environmental damages. However, energy from wind is a clean renewable source which is promising for diminishing these problems. Some previous effort has been made to increase wind power production by designing more efficient airfoils. In doing so, the main objective of this work is to employ the adjoint optimization method and CFD simulations to improve the design and efficiency of wind turbine blade airfoils. The main parameter investigated in this work is the influence of the optimization's angle of attack on the resulted airfoil. The first step to achieve the main goal was to perform the validation process of the CFD by comparing numerical simulations to wind tunnel results. Next, the adjoint optimization method was tested for different meshes in order to verify the model's results coherence. Finally, the optimization and simulations were performed for NACA 0012 airfoil at different angles of attack. The results from the optimized airfoils were compared to the not optimized through their efficiency curves. According to the results, it was observed an increase of 8.5 % in the efficiency when the optimized airfoil is considered.
Keywords
wind power airfoils, Optimization, numerical validation, CFD, Angle of attack
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