Wind and Structures

Techno-Press (테크노프레스)
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Dynamic analysis of offshore wind turbines

  • Zhang, Jian-Ping (School of Mechanical Engineering, University of Shanghai for Science and Technology) ;
  • Wang, Ming-Qiang (College of Energy and Mechanical Engineering, Shanghai University of Electric Power) ;
  • Gong, Zhen (College of Energy and Mechanical Engineering, Shanghai University of Electric Power) ;
  • Shi, Feng-Feng (College of Energy and Mechanical Engineering, Shanghai University of Electric Power)
  • Received : 2019.12.18
  • Accepted : 2020.10.22
  • Published : 2020.10.25
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Abstract

For large-scale 5MW offshore wind turbines, the discrete equation of fluid domain and the motion equation of structural domain with geometric nonlinearity were built, the three-dimensional modeling of the blade considering fluid-structure interaction (FSI) was achieved by using Unigraphics (UG) and Geometry modules, and the numerical simulation and the analysis of the vibration characteristics for wind turbine structure under rotating effect were carried out based on ANSYS software. The results indicate that the rotating effect has an apparent effect on displacement and Von Mises stress, and the response and the distribution of displacement and Von Mises stress for the blade in direction of wingspan increase nonlinearly with the equal increase of rotational speeds. Compared with the single blade model, the blade vibration period of the whole machine model is much longer. The structural coupling effect reduces the response peak value of the blade displacement and Von Mises stress, and the increase of rotational speed enhances this coupling effect. The maximum displacement difference between two models decreases first and then increases along wingspan direction, the trend is more visible with the equal increase of rotational speed, and the boundary point with zero displacement difference moves towards the blade root. Furthermore, the Von Mises stress difference increases gradually with the increase of rotational speed and decreases nonlinearly from the blade middle to both sides. The results can provide technical reference for the safe operation and optimal design of offshore wind turbines.

Keywords

References

  1. Bayati, I., Belloli, M., Bernini, L. and Zasso, A. (2017), "Aerodynamic design methodology for wind tunnel tests of wind turbine rotors", J. Wind Eng. Ind. Aerod., 167, 217-227. https://doi.org/10.1016/j.jweia.2017.05.004.
  2. Dou, B., Guala, M., Lei, L. and Zeng, P. (2019), "Experimental investigation of the performance and wake effect of a small-scale wind turbine in a wind tunnel", Energy, 166, 819-833. https://doi.org/10.1016/j.jweia.2017.05.004.
  3. Horcas, S.G., Debrabandere, F., Tartinville, B., Hirsch, C. and Coussement, G. (2017), "Extension of the Non-Linear Harmonic method for the study of the dynamic aeroelasticity of horizontal axis wind turbines", J. Fluids Struct., 73, 100-124. https://doi.org/10.1016/j.jfluidstructs.2017.06.008.
  4. Houigab, J., Seungho, L. and Soon-Duck, K. (2018), "Blockage corrections for wind tunnel tests conducted on a Darrieus wind turbine", J. Wind Eng. Ind. Aerod., 179, 229-239. https://doi.org/10.1016/j.jweia.2018.06.002.
  5. Jiang, S. and Duan, S. (2016), "A multibody dynamics approach for vibration analysis of horizontal axis wind turbine blades", ASME 2016 International Mechanical Engineering Congress and Exposition, Arizona.
  6. Jonkman, J., Butterfield, S., Musial, W. and Scott, G. (2009), "Definition of a 5-MW reference wind turbine for offshore system development", Golden, CO: National Renewable Energy Laboratory.
  7. Ke, S. T., Xu, L. and Ge, Y. J. (2017), "The aerostatic response and stability performance of a wind turbine tower-blade coupled system considering blade shutdown position", Wind Struct., 25(6), 507-535. https://doi.org/10.12989/was.2017.25.6.507.
  8. Lee, D., Hodges, D. and Patil, M. (2002), "Multi-flexible-body dynamic analysis of horizontal axis wind turbines", Wind Energy, 5(4), 281-300. https://doi.org/10.1002/we.66.
  9. Li, D., Mo, W., Yan, X. and Zhang, X. (2014), "Aeroelastic analysis of horizontal axis wind turbine based on multi-body model", J. Mech. Eng., 50(12), 140-150. https://doi.org/10.3901/JME.2014.12.140.
  10. Li, Y., Castro, A.M., Sinokrot, T., Prescott, W. and Carrica, P.M. (2015), "Coupled multi-body dynamics and CFD for wind turbine simulation including explicit wind turbulence", Renew. Energy. 76, 338-361. https://doi.org/10.1016/j.renene.2014.11.014.
  11. Li, Y., Tang, Y., Zhu, Q., Qu, X., Wang, B. and Zhang, R. (2017), "Effects of second-order wave forces and aerodynamic forces on dynamic responses of a TLP-type floating offshore wind turbine considering the set-down motion", J. Renew. Sustain. Energy, 9(6), 063302. https://doi.org/10.1063/1.5007893.
  12. Mo, W., Li, D., Xia, H. and Lv, W. (2013), "Multibody dynamic modeling and dynamic characteristics analysis of flexible blades for a horizontal axis wind turbine", J. Vib. Shock, 32(22), 99-105. https://doi.org/10.13465/j.cnki.jvs.2013.22.035.
  13. Ozbay, A., Tian, W., Hu, H. (2016), "Experimental investigation on the wake characteristics and aeromechanics of dual-rotor wind turbines", J. Eng. Gas Turbines Power-Transactions ASME, 138(4), 042602. https://doi.org/10.1115/1.4031476.
  14. Rasmussen, F., Hansen, M.H., Thomsen, K., Larsen, T.J., Bertagnolio, F., Johansen, J. and Hansen, A.M. (2003), "Present status of aeroelasticity of wind turbines", Wind Energy: Int. J. Progress Application Wind Power Conversion Technology, 6(3), 213-228. https://doi.org/10.1002/we.98.
  15. Toshimitsu, K., Narihara, T., Kikugawa, H., Akiyoshi, A. and Kawazu, Y. (2017), "Experimental study of improved HAWT performance in simulated natural wind by an active controlled multi-fan wind tunnel", J. Thermal Sci., 26(2), 113-118. https://doi.org/10.1007/s11630-017-0918-7.
  16. Wang, F. (2004), "Computational fluid dynamics analysis-principle and application of CFD software", Tsinghua University Press, Beijing, in Chinese.
  17. Wang, P., Zhao, M., Da, X., Liu, J. and Xu, C. (2018), "Wind, wave and earthquake responses of offshore wind turbine on monopile foundation in clay", Soil Dyn. Earthq. Eng., 113, 47-57. https://doi.org/10.1016/j.soildyn.2018.04.028.
  18. Ye, K. and Ji, J. (2019), "Current, wave, wind and interaction induced dynamic response of a 5MW spar-type offshore direct-drive wind turbine", Eng. Struct., 178, 395-409. https://doi.org/10.1016/j.engstruct.2018.10.023.
  19. Zhang, F. and He, R. (2014), "Natural frequency analysis of wind turbines based on flexible multi-body dynamics", Proceedings of the CSEE, 34(11), 1807-1814. https://doi.org/10.13334/j.0258-8013.pcsee.2014.11.012.
  20. Zhang, J., Chen, W., Zhou T., Wu H., Hu D. and Ren J. (2016), "Analysis of dynamic stability for wind turbine blade under fluid-structure interaction", J. Vibroeng., 18(2), 1175-1186.
  21. Zhang, J., Guo, L., Wu, H., Zhou, A., Hu, D. and Ren, J. (2014), "The influence of wind shear on vibration of geometrically nonlinear wind turbine blade under fluid-structure interaction", Ocean Eng., 84(4), 14-19. https://doi.org/10.1016/j.oceaneng.2014.03.017.
  22. Zhao, X., MaiBer, P. and Wu, J. (2007), "A new multibody modelling methodology for wind turbine structures using a cardanic joint beam element", Renew. Energy, 32(3), 532-546. https://doi.org/10.1016/j.renene.2006.04.010.