Wind and Structures

  • 제32권3호
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  • Pages.267-281
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  • 2021
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
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DOI QR Code

Flutter study of flapwise bend-twist coupled composite wind turbine blades

  • Farsadi, Touraj (Adana Alparslan Turkes Science and Technology University, Department of Aerospace Engineering) ;
  • Kayran, Altan (Middle East Technical University, Department of Aerospace Engineering, RUZGEM)
  • 투고 : 2020.08.08
  • 심사 : 2021.03.23
  • 발행 : 2021.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

Bending-twisting coupling induced in big composite wind turbine blades is one of the passive control mechanisms which is exploited to mitigate loads incurred due to deformation of the blades. In the present study, flutter characteristics of bend-twist coupled blades, designed for load alleviation in wind turbine systems, are investigated by time-domain analysis. For this purpose, a baseline full GFRP blade, a bend-twist coupled full GFRP blade, and a hybrid GFRP and CFRP bend-twist coupled blade is designed for load reduction purpose for a 5 MW wind turbine model that is set up in the wind turbine multi-body dynamic code PHATAS. For the study of flutter characteristics of the blades, an over-speed analysis of the wind turbine system is performed without using any blade control and applying slowly increasing wind velocity. A detailed procedure of obtaining the flutter wind and rotational speeds from the time responses of the rotational speed of the rotor, flapwise and torsional deformation of the blade tip, and angle of attack and lift coefficient of the tip section of the blade is explained. Results show that flutter wind and rotational speeds of bend-twist coupled blades are lower than the flutter wind and rotational speeds of the baseline blade mainly due to the kinematic coupling between the bending and torsional deformation in bend-twist coupled blades.

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참고문헌

  1. Baran, R.P. (2014), Aeroelastic Analysis and Classical Flutter of a Wind Turbine Using BLADEMODE V. 2.0 and PHATAS in FOCUS 6", Master Thesis, Delft University of Technology.
  2. Carrion, M., Steijl, R., Woodgate, M., Barakos, G. N., Munduate, X., & Gomez-Iradi, S. (2014), "Aeroelastic analysis of wind turbines using a tightly coupled CFD-CSD method", J. Fluids Struct., 50, 392-415. https://doi.org/10.1016/j.jfluidstructs.2014.06.029.
  3. Farsadi, T. and Kayran, A. (2021), "Classical flutter analysis of composite wind turbine blades including compressibility", Wind Energy, 24(1), 69-91. https://doi.org/10.1002/we.2559.
  4. Farsadi, T. and Kayran, A. (2016), "Aeroelastic stability evaluation of bend-twist coupled composite wind turbine blades designed for load alleviation in wind turbine systems", In 34th Wind Energy Symposium. https://doi.org/10.2514/6.2016-1009.
  5. Farsadi, T. and A. Kayran. (2016), "Aeroelastic instability analysis of composite rotating blades based on Loewy's and Theodorsen's unsteady aerodynamics", The 2016 World Congress on Advances in Civil Environmental, and Materials Research.
  6. Ghasemi, A.R., Jahanshir, A. and Tarighat, M.H. (2014), "Numerical and analytical study of aeroelastic characteristics of wind turbine composite blades", Wind Struct., 18(2), 103-116. https://doi.org/10.12989/was.2014.18.2.103.
  7. Gozcu, O.M., Farsadi, T., Sener T. and Kayran, A. (2015), "Assessment of the Effect of Hybrid GRFP-CFRP Usage in Wind Turbine Blades on the Reduction of Fatigue Damage Equivalent Loads in the Wind Turbine System", In 33rd Wind Energy Symposium. https://doi.org/10.2514/6.2015-0999.
  8. Ha, S.K., Hayat, K. and Xu, L. (2014), "Effect of shallow-angled skins on the structural performance of the large-scale wind turbine blade", Renew. Energy, 71, 100-112. https://doi.org/10.1016/j.renene.2014.05.023.
  9. Abdel Hafeez, M.M. and El-Badawy, A.A. (2018), "Flutter limit investigation for a horizontal axis wind turbine blade", J. Vib. Acoust., 140(4). https://doi.org/10.1115/1.4039402.
  10. Hansen, M.H. (2004), "Stability analysis of three-bladed turbines using an eigenvalue approach. In: 42nd AIAA Aerospace sciences meeting and exhibit", Proceedings of the ASME Wind Energy Symposium, Reno, Nevada.
  11. Hansen, M.H. (2007), "Aeroelastic instability problems for wind turbines", Wind Energy, 10(6), 551-577, https://doi.org/10.1002/we.242.
  12. Hauptmann, S., Bulk, M., Schon, L., Erbsloh, S., Boorsma, K., Grasso, F. and Cheng, P.W. (2014), "Comparison of the lifting-line free vortex wake method and the blade-element-momentum theory regarding the simulated loads of multi-MW wind turbines", In Journal of Physics: Conference Series.
  13. Hayat, K. and Ha, S.K. (2015). "Flutter performance of large-scale wind turbine blade with shallow-angled skins", Compos. Struct., 132, 575-583. https://doi.org/10.1016/j.compstruct.2015.05.073.
  14. Hayat, K., De Lecea, A.G.M., Moriones, C.D. and Ha, S.K. (2016), "Flutter performance of bend-twist coupled large-scale wind turbine blades", J. Sound Vib., 370, 149-162. https://doi.org/10.1016/j.jsv.2016.01.032.
  15. Hong, C.H. and Chopra, I. (1985), "Aeroelastic stability analysis of a composite rotor blade", J. Amer. Helicopter Soc., 30(2), 57-67. https://doi.org/10.4050/JAHS.30.57.
  16. Howison, J., Thomas, J. and Ekici, K. (2018), "Aeroelastic analysis of a wind turbine blade using the harmonic balance method", Wind Energy, 21(4), 226-241. https://doi.org/10.1002/we.2157.
  17. Jonkman, J., Butterfield, S., Musial, W. and Scott, G. (2009), "Definition of a 5-MW reference wind turbine for offshore system development (No. NREL/TP-500-38060)", National Renewable Energy Lab.(NREL).
  18. Karaolis, N.M., Musgrove, P.J. and Jenimidis, G. (1988), "Active and passive aerodynamic power control using asymmetric fibre reinforced laminates for wind turbine blades", In Wind Energy Conversation: Proceedings of the 1988 10th BWEA Wind Energy Conference.
  19. 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.
  20. Leble, V. and Barakos, G. (2016), "Demonstration of a coupled floating offshore wind turbine analysis with high-fidelity methods", J. Fluids Struct., 62, 272-293. https://doi.org/10.1016/j.jfluidstructs.2016.02.001.
  21. Lee, J.W., Kim, J.K., Han, J.H. and Shin, H.K. (2013), "Active load control for wind turbine blades using trailing edge flap", Wind Struct., 16(3), 263-278. https://doi.org/10.12989/was.2013.16.3.263.
  22. Lin, H.J. and Lai, W.M. (2010), "A study of elastic coupling to the wind turbine blade by combined analytical and finite element beam model", J. Compos. Mater., 44(23), 2643-2665. https://doi.org/10.1177/0021998310369578.
  23. Lindenburg, C. (2012). PHATAS Release "JAN-2012a", Users Manual, Program for Horizontal Axis Wind Turbine Analysis and Simulation. Knowledge Center WMC, Wieringerweft, The Netherlands, Technical Report No. ECN-I-05-005 r10.
  24. Lobitz, D.W., Veers, P.S., Eisler, G.R., Laino, D.J., Migliore, P.G. and Bir, G. (2001), "The use of twist-coupled blades to enhance the performance of horizontal axis wind turbines", SAND2001-1303, May, https://doi.org/10.2172/783086
  25. Lobitz, D.W. (2004), "Aeroelastic stability predictions for MWsized wind turbine blades", Wind Energy, 7(3), 211-224. https://doi.org/10.1002/we.120.
  26. Locke, J., Valencia, U. and Ishikawa, K. (2003), "Design studies for twist-coupled wind turbine blades", In Wind Energy Symposium. https://doi.org/10.1115/WIND2003-1043
  27. Natori, M. and Nemat-Nasser, S. (1986), "Application of a mixed variational approach to aeroelastic stability analysis of a nonuniform blade", J. Struct. Mech., 14(1), 5-31. https://doi.org/10.1080/03601218608907508.
  28. Politakis, G., Haans, W. and van Bussel, G. (2008), "Suppression of classical flutter using a 'smart blade", In 46th AIAA Aerospace Sciences Meeting and Exhibit. https://doi.org/10.2514/6.2008-1301.
  29. Rafiee, R. and Fakoor, M. (2013), "Aeroelastic investigation of a composite wind turbine blade", Wind Struct., 17(6), 671-680. https://doi.org/10.12989/was.2013.17.6.671.
  30. Rafiee, R., Moradi, M. and Khanpour, M. (2016), "The influence of material properties on the aeroelastic behavior of a composite wind turbine blade", J. Renew. Sustain. Energy, 8(6), 063305. https://doi.org/10.1063/1.4968600.
  31. Rafiee, R., Tahani, M. and Moradi, M. (2016), "Simulation of aeroelastic behavior in a composite wind turbine blade", J. Wind Eng. Ind. Aerod., 151, 60-69. https://doi.org/10.1016/j.jweia.2016.01.010.
  32. Rehman, S., Alam, M.M. and Alhems, L.M. (2020), "A review of wind-turbine structural stability, failure and alleviation", Wind Struct., 30(5), 511-524. https://doi.org/10.12989/WAS.2020.30.5.511.
  33. Rezaee, M. and Aly, A.M. (2016), "Vibration control in wind turbines for performance enhancement: A comparative study", Wind Struct., 22(1). http://dx.doi.org/10.12989/was.2016.22.1.107.
  34. Sener, O., Farsadi, T., Ozan Gozcu, M. and Kayran, A. (2018), "Evaluation of the effect of spar cap fiber angle of bending-torsion coupled blades on the aero-structural performance of wind turbines", J. Solar Energy Eng., 140(4), 041004-1-041004-18. https://doi.org/10.1115/1.4039350.
  35. Stablein, A.R., Hansen, M.H. and Verelst, D.R. (2017), "Modal properties and stability of bend-twist coupled wind turbine blades", Wind Energy Sci., 2(1), 343-360. https://doi.org/10.5194/wes-2-343-2017.
  36. Yu, W., Ho, J.C. and Hodges, D.H. (2012), "Variational asymptotic beam sectional analysis-An updated version", Int. J. Eng. Sci., 59, 40-64. https://doi.org/10.1016/j.ijengsci.2012.03.006.