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Comparison of aeroelastic performance base and optimized blades of
horizontal axis wind turbine
Mohamad Reza Saber1 Mohamad Hassan Djavareshkian2*
1- Department of Aerospace Engineering, Ferdowsi University of Mashhad, Mashhad, Iran
2- Department of Mechanical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran
P.O.B. 91775-1111 Mashhad, Iran, javareshkian@um.ac.ir
ARTICLE INFORMATION
ABSTRACT
Original Research Paper
Received 25 December 2013
Accepted 22 January 2014
Available Online 11 November 2014
In this study, the results of two optimized and base blades of horizontal axis wind turbine with
aerodynamic point of view and analysis of the stresses and strains are compared. The
aerodynamic forces are obtained by solving the viscous flow and the optimization is done by
genetic algorithm and neural network. By applying the aerodynamic loads, the stress and strain
are analyzed. For optimization, the chord length and the twist angle of the blade at various
radiuses have been calculated by BEM. The Navier Stokes equations are solved to simulate both
two and three dimensional lows. The results which are obtained from 2D Computational Fluid
Dynamics (CFD) have been utilized to train Neural Network (NN). In the process of airfoil
optimization, Genetic Algorithm (GA) is coupled with trained NN to attain the best airfoil shape at
each angle of the attack. First, the results of both optimized and base wing are compared then the
aerodynamic forces on the blades are applied for stress analysis. The results of the analysis of the
stress strain showed that optimized wing improves the wing performance.
Keywords:
BEM
Genetic Algorithm
Neural Network
Optimization
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M.R. Saber, M.H. Djavareshkian, Comparison of aeroelastic performance base and optimized blades of horizontal axis wind turbine, Modares Mechanical Engineering Vol. 14,
No. 16, pp. 283-290, 2015 (In Persian)
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