Aeroelastic Analysis of Large Horizontal Axis-Wind Turbine Blades

TANG Di; LU Zhi-liang; GUO Tong-qing

doi:10.3879/j.issn.1000-0887.2013.10.009

Volume 34 Issue 10

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TANG Di, LU Zhi-liang, GUO Tong-qing. Aeroelastic Analysis of Large Horizontal Axis-Wind Turbine Blades[J]. Applied Mathematics and Mechanics, 2013, 34(10): 1091-1097. doi: 10.3879/j.issn.1000-0887.2013.10.009

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Aeroelastic Analysis of Large Horizontal Axis-Wind Turbine Blades

doi: 10.3879/j.issn.1000-0887.2013.10.009

College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P.R.China

Funds: The National Basic Research Program of China (973 Program)(2014CB046200);The National Natural Science Foundation of China(11372135)

Received Date: 2013-04-23
Rev Recd Date: 2013-09-16
Publish Date: 2013-10-15

Abstract

Abstract

A nonlinear aeroelastic analysis method for large horizontal axis wind turbines was presented. A vortex wake method and a nonlinear finite element method were coupled to realize the approach. The vortex wake method was used to predict the wind turbine aerodynamic loads and the rotor model was built with 3D shell elements. The averaged aerodynamic forces along the azimuth angle were applied to the structure model and the nonlinear static aeroelasticity was computed. The wind rotor modalities were obtained in the static aeroelastic configuration through linearization of the coupled equations. The static aeroelasticity and dynamic aeroelasticity were calculated for the NH 1500 wind turbine. Results show that the structural geometrical nonlinearities will significantly reduce the displacements and vibration amplitudes of the wind turbine blades. The structural geometrical nonlinearities are non-negligible for both the static aeroelasticity and dynamic aeroelasticity.
- wind turbine,
- aeroelasticity,
- geometric nonlinearity,
- vortex wake method

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References(14)

References

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