Aerodynamic response analysis of wind turbines

Wind energy has received increasing attention in the same way as energy crisis and environmental deterioration. The aerodynamic response of wind turbines is the major problem in wind turbine design. Blade element momentum theory was used to study the aerodynamic thrusts of the blades on the tower. Iterative solutions were used to calculate the axial flow induction factor for each cross-section of the blades. The harmonic superposition method was used to simulate the fluctuating wind velocity time histories. The wind shear equation was used to calculate the mean wind velocities at different heights. Finally, the finite element method model was used to study the aerodynamic response of wind turbines under random wind loads. Results show that the top displacement of tower is increased accordingly by increasing the rotational speed of the blades. Hence, this should be considered in wind turbine design.

[1]  David Wood,et al.  An experimental investigation of blade element theory for wind turbines. Part 1. Mean flow results , 1987 .

[2]  Jagmohan Humar,et al.  Dynamic of structures , 1989 .

[3]  Charalampos Baniotopoulos,et al.  Analysis and design of the prototype of a steel 1-MW wind turbine tower , 2003 .

[4]  Asaf Varol,et al.  Increasing the efficiency of wind turbines , 2001 .

[5]  S. Naguleswaran,et al.  Lateral Vibration Of A Centrifugally Tensioned Uniform Euler-Bernoulli Beam , 1994 .

[6]  Michael S. Selig,et al.  Blade design trade-offs using low-lift airfoils for stall-regulated HAWTs , 1999 .

[7]  V. H. Morcos.  Aerodynamic performance analysis of horizontal axis wind turbines , 1994 .

[8]  Masanobu Shinozuka,et al.  Simulation of Multivariate and Multidimensional Random Processes , 1971 .

[9]  G. Deodatis.  Simulation of Ergodic Multivariate Stochastic Processes , 1996 .

[10]  Asfaw Beyene,et al.  Aero-elastic behavior of a flexible blade for wind turbine application: A 2D computational study , 2010 .

[11]  Alireza Maheri,et al.  Decoupled aerodynamic and structural design of wind turbine adaptive blades , 2007 .

[12]  K. Y. Maalawi,et al.  A practical approach for selecting optimum wind rotors , 2003 .

[13]  Biswajit Basu,et al.  Along-wind response of a wind turbine tower with blade coupling subjected to rotationally sampled wind loading , 2005 .

[14]  C. J. Meyer,et al.  Numerical simulation of the flow field in the vicinity of an axial flow fan , 2001 .

[15]  R. Clough,et al.  Dynamics Of Structures , 1975 .

[16]  Karam Y. Maalawi,et al.  A direct method for evaluating performance of horizontal axis wind turbines , 2001 .

[17]  Charalampos Baniotopoulos,et al.  Seismic Analysis and Design of the 1 MW Steel Wind Turbine Towers at Mount Kalogero-vouni , 2003 .

[18]  I. Chopra,et al.  Non-linear dynamic response of a wind turbine blade , 1979 .

[19]  Matthew M. Duquette,et al.  Numerical Implications of Solidity and Blade Number on Rotor Performance of Horizontal-Axis Wind Turbines , 2003 .

[20]  Lennart Söder,et al.  Wind energy technology and current status : a review , 2000 .

[21]  M. Al-Salem,et al.  Natural frequency measurements for rotating spanwise uniform cantilever beams , 2001 .

[22]  A. Mochida,et al.  Wind tunnel tests on the relationship between building density and pedestrian-level wind velocity: Development of guidelines for realizing acceptable wind environment in residential neighborhoods , 2008 .

[23]  M. Shinozuka,et al.  Digital simulation of random processes and its applications , 1972 .

[24]  Yuan Zhao,et al.  Development strategies for wind power industry in Jiangsu Province, China: Based on the evaluation of resource capacity , 2009 .