A new direct design method for the medium thickness wind turbine airfoil

2015 ◽

Vol 744-746 ◽

pp. 253-258 ◽

Cited By ~ 2

Author(s):

Ya Qiong Chen ◽

Yue Fa Fang

Keyword(s):

Wind Turbine ◽

Optimization Design ◽

Design Method ◽

Aerodynamic Performance ◽

Parametric Modeling ◽

Multi Objective ◽

Wind Turbine Airfoil ◽

Drag Ratio ◽

Operating Points ◽

Lift To Drag Ratio

In this paper, aerodynamic performance and noise of the wind turbine airfoil are the optimization design goal and based on this, the optimization design method with multi-operating points and multi-objective of the airfoils is built. The Bezier curve is used in parametric modeling of the contour of the airfoil and the general equation for control points is deduced form the discrete points coordinates of the airfoil. The weigh distribution schemes for multi-objective and multi-operating points are integrated designed by treating the NREL S834 airfoil as the initial airfoils. The results show that the lift-to-drag ratio of the optimized airfoils has a improvement around the designed operating angle and the overall noise has a reduction compared with the initial airfoils, which means that the optimized airfoils get a better aerodynamic and acoustic performance.

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A new direct design method of wind turbine airfoils and wind tunnel experiment

Applied Mathematical Modelling ◽

10.1016/j.apm.2015.09.051 ◽

2016 ◽

Vol 40 (3) ◽

pp. 2002-2014 ◽

Cited By ~ 13

Author(s):

Jin Chen ◽

Quan Wang ◽

Shiqiang Zhang ◽

Peter Eecen ◽

Francesco Grasso

Keyword(s):

Wind Tunnel ◽

Wind Turbine ◽

Design Method ◽

Wind Tunnel Experiment ◽

Direct Design ◽

Turbine Airfoils

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Optimization and Design for Wind Turbine Airfoil at Multiple Working Conditions Based on Genetic Algorithm

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.668-669.230 ◽

2014 ◽

Vol 668-669 ◽

pp. 230-235

Author(s):

Ya Qiong Chen ◽

Yue Fa Fang ◽

Sheng Guo

Keyword(s):

Genetic Algorithm ◽

Wind Turbine ◽

Working Conditions ◽

Optimization Design ◽

Design Method ◽

Aerodynamic Performance ◽

Linear Perturbation ◽

Airfoil Optimization ◽

Wind Turbine Airfoil ◽

Performance Results

S827 wind turbine airfoil was considered as original airfoil, which was created by NREL. Linear perturbation methods were used to get new shape parameters of wind turbine airfoil. Optimization of original airfoil was carried out based on genetic algorithm and XFOIL software, which was used to get aerodynamic performance. Results shows that the lift-drag radio of optimized airfoil was remarkable improved under multiple working conditions. Aerodynamic performance of optimized airfoil was much better comparing with the original airfoil. The optimal design method for wind turbine airfoil used in this paper can be used to optimization design of high lift-drag ratio wind turbine airfoil. Engineering practical value is considered by this method and it is feasible and efficient through example.

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A new airfoil design method for wind turbine to improve maximum lift of airfoil

Wind Engineering ◽

10.1177/0309524x20984428 ◽

2021 ◽

pp. 0309524X2098442

Author(s):

Qing Wang ◽

Deshun Li

Keyword(s):

Wind Turbine ◽

Lift Force ◽

Rotation Angle ◽

Design Method ◽

Angle Of Attack ◽

Scale Factor ◽

High Angle ◽

High Angle Of Attack ◽

Wind Turbine Airfoil ◽

Force Characteristics

A new wind turbine airfoil design method is established. This method generates an airfoil by fusing different airfoils. The airfoil designed by this method could restrict the airflow separation near the trailing edge of airfoil at high angle of attack, meanwhile the turbulence also is restricted. As a result, the maximum lift force is increased about 16.4% at high angle of attack. Meanwhile, the drag force is decreased about 31.3%. By analyzing the influence of scale factor and rotation angle on the airfoil aerodynamic force characteristics, the simulated results indicate that the larger scale factor and rotation angle could increase the lift stall angle and the maximum lift force. Therefore, this method could be used for designing wind turbine airfoil with high maximum lift force characteristics.

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Integrated Design of Aerodynamic Performance and Structural Characteristics for Medium Thickness Wind Turbine Airfoil

Applied Sciences ◽

10.3390/app9235243 ◽

2019 ◽

Vol 9 (23) ◽

pp. 5243

Author(s):

Quan Wang ◽

Pan Huang ◽

Di Gan ◽

Jun Wang

Keyword(s):

Wind Turbine ◽

Design Method ◽

Structural Characteristics ◽

Functional Integration ◽

Integrated Design ◽

Aerodynamic Performance ◽

Integration Theory ◽

Medium Thickness ◽

Cross Sectional ◽

Turbine Airfoils

The currently geometric and aerodynamic characteristics for wind turbine airfoils with the medium thickness are studied to pursue maximum aerodynamic performance, while the interaction between blade stiffness and aerodynamic performance is neglected. Combining the airfoil functional integration theory and the mathematical model of the blade cross-section stiffness matrix, an integrated design method of aerodynamic performance and structural stiffness characteristics for the medium thickness airfoils is presented. The aerodynamic and structural comparison of the optimized WQ-A300 airfoil, WQ-B300 airfoil, and the classic DU97-W-300 airfoil were analyzed. The results show that the aerodynamic performance of the WQ-A300 and WQ-B300 airfoils are better than that of the DU97-W-300 airfoil. Though the aerodynamic performance of the WQ-B300 airfoil is slightly reduced compared to the WQ-A300 airfoil, its blade cross-sectional stiffness properties are improved as the flapwise and edgewise stiffness are increased by 6.2% and 8.4%, respectively. This study verifies the feasibility for the novel design method. Moreover, it also provides a good design idea for the wind turbine airfoils and blade structural properties with medium or large thickness.

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