Ocean Systems Engineering

  • 제8권4호
  • /
  • Pages.361-380
  • /
  • 2018
  • /
  • 2093-6702(pISSN)
  • /
  • 2093-677X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

A study on performance assessment of WEC rotor in the Jeju western waters

  • 투고 : 2018.07.12
  • 심사 : 2018.09.21
  • 발행 : 2018.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

The dynamic performance of the wave energy converter (WEC) rotor with different geometric parameters such as depth of submergence and beak angle has been assessed by considering the linear potential flow theory using WAMIT solver and along with the computational fluid dynamics (CFD). The effect of viscous damping is incorporated by conducting numerical free decay test using CFD. The hydrodynamic coefficients obtained from the WAMIT, viscous damping from the CFD and estimated PTO damping are used to solve the equation of motion to obtain the final pitch response, mean optimal power and capture width. The viscous damping is almost 0.9 to 4.6 times when compared to the actual damping. It is observed that by neglecting the viscous damping the pitch response and power are overestimated when compared to the without viscous damping. The performance of the pitch WEC rotor in the Jeju western coast at the Chagwido is analyzed using Joint North Sea Wave Project (JONSWAP) spectrum and square-root of average extracted power is obtained. The performance of WEC rotor with depth of submergence 2.8 m and beak angle $60^{\circ}$ found to be good compared to the other rotors.

키워드

과제정보

연구 과제 주관 기관 : Jeju National University

참고문헌

  1. Antonio, F.D.O. (2010), "Wave energy utilization: A review of the technologies", Renewable and sustainable energy reviews, 14(3), 899-918. https://doi.org/10.1016/j.rser.2009.11.003
  2. Bhattacharyya, R. and McCormick, M.E. (2003), Wave Energy Conversion. Elsevier ocean engineering book series, Oxford, UK.
  3. Chakrabarti, S. (2005), Handbook of Offshore Engineering, Elsevier, Amsterdam, Netherlands.
  4. Cho, I.H. and Kim, M.H. (2013), "Enhancement of wave-energy-conversion efficiency of a single power buoy with inner dynamic system by intentional mismatching strategy", Ocean Syst. Eng., 3(3), 203-217. https://doi.org/10.12989/ose.2013.3.3.203
  5. Cho, I.H., Kim, M.H and Kweon, H.M. (2012), "Wave energy converter by using relative heave motion between buoy and inner dynamic system", Ocean Syst. Eng., 2(4), 297-314. https://doi.org/10.12989/ose.2012.2.4.297
  6. Count, B.M. (1978), "On the dynamics of wave-power devices", P. Roy. Soc. London A: Math., Phys. Eng. Sci., 363(1715), 559-579. https://doi.org/10.1098/rspa.1978.0183
  7. Cruz, J. (2007), Ocean Wave Energy: Current Status and Future Perspectives. Springer Science & Business Media, Berlin, Germany.
  8. Evans, D.V. (1976), "A theory for wave-power absorption by oscillating bodies", J. Fluid Mech., 77(1), 1-25. https://doi.org/10.1017/S0022112076001109
  9. Falnes, J. (2002), Ocean Waves and Oscillating Systems: Linear Interactions including Wave-Energy Extraction, Cambridge University Press, Cambridge, UK.
  10. Falnes, J. (2007), "A review of wave-energy extraction", Mar. Struct., 20(4), 185-201. https://doi.org/10.1016/j.marstruc.2007.09.001
  11. Folley, M. (Ed.) (2016), Numerical Modelling of Wave Energy Converters: State-of-the-Art Techniques for Single Devices and Arrays, Academic Press, Cambridge, MA, USA.
  12. Hadzic, H. (2006), "Development and application of finite volume method for the computation of flows around moving bodies on unstructured, overlapping grids", Ph.D. Dissertation, Technical University Hamburg-Harburg, Hamburg, Germany.
  13. Jeffrey, D.C., Richmond, D.J.E. and Salter, S. (1976), Second year interim report on Edinburgh Wave Power Project: Study of mechanisms for extracting power from sea waves, University of Edinburgh, Edinburgh, UK.
  14. Kim, J.R., Bae, Y.H. and Cho, I.H. (2014), "Design of wave energy extractor with a linear electric generator-part I. design of a wave power buoy", J. Korean Soc. Mar. Environ. Energy, 17(2), 146-152. https://doi.org/10.7846/JKOSMEE.2014.17.2.146
  15. Mei, C.C. (1976), "Power extraction from water waves", J. Ship Res., 20, 63-66.
  16. Mei, C.C., Stiassnie, M. and Yue, D.K.P. (2005), Theory and Applications of Ocean Surface Waves: Nonlinear Aspects, World scientific, Singapore.
  17. Mynett, A.E., Serman, D.D. and Mei, C.C. (1979), "Characteristics of Salter's cam for extracting energy from ocean waves", Appl. Ocean Res., 1(1), 13-20. https://doi.org/10.1016/0141-1187(79)90004-X
  18. Pecher, A., Kofoed, J.P. and Larsen, T. (2015), "The extensive R&D behind the Weptos WEC", Renew. Energ. Offshore, 351-358.
  19. Pecher, A., Kofoed, J.P., Larsen, T. and Marchalot, T. (2012), "Experimental study of the Weptos wave energy converter", Proceedings of the 31st International Conference on Ocean, Offshore and Arctic Engineering, Rio de Janeiro, Brazil, July.
  20. Pizer, D. (1994), Numerical Modelling of Wave Energy Absorbers. Harwell Laboratory, Energy Technology Support Unit, UK.
  21. Rapuc, S. (2012), "Numerical study of the WEPTOS Single Rotor", Doctoral dissertation, Master Thesis report, Aalborg University and Technical University of Denmark, Denmark.
  22. Salter, S., Jeffrey, D.C. and Taylor, J.R.M. (1975), First year interim report on Edinburgh Wave Power Project: Study of mechanisms for extracting power from sea waves, University of Edinburgh, Edinburgh, UK.
  23. Salter, S.H. (1974), "Wave power", Nature, 249(5459), 720-724. https://doi.org/10.1038/249720a0
  24. Skyner, D. (1987), Solo Duck Linear Analysis, University of Edinburgh, Edinburgh, UK.