Ocean Systems Engineering

  • 제2권2호
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  • Pages.147-158
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  • 2012
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  • 2093-6702(pISSN)
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  • 2093-677X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

A time-domain simulation of an oscillating water column with irregular waves

  • Koo, Weoncheol (School of Naval Architecture and Ocean Eng., Univ. of Ulsan) ;
  • Kim, Moo-Hyun (Department of Civil Engineering, Texas A&M Univ.)
  • 투고 : 2011.02.01
  • 심사 : 2012.06.08
  • 발행 : 2012.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

A time-domain simulation of a land-based Oscillating Water Column (OWC) with various irregular waves as a form of PM spectrum is performed by using a two-dimensional fully nonlinear numerical wave tank (NWT) based on the potential theory, mixed Eulerian-Lagrangian (MEL) approach, and boundary element method. The nonlinear free-surface condition inside the OWC chamber was specially devised to describe both the pneumatic effect of the time-varying pressure and the viscous energy loss due to water column motions. The quadratic models for pneumatic pressure and viscous loss are applied to the air and free surface inside the chamber, and their numerical results are compared with those with equivalent linear ones. Various wave spectra are applied to the OWC system to predict the efficiency of wave-energy take-off for various wave conditions. The cases of regular and irregular waves are also compared.

키워드

과제정보

연구 과제 주관 기관 : Korean Research Foundation

참고문헌

  1. Gato, L.M.C. and Falcao, A.F.deO. (1988), "Aerodynamics of the wells turbine", Int. J. Mech. Sci., 30(6), 383-395. https://doi.org/10.1016/0020-7403(88)90012-4
  2. Heath, T., Whittaker, T.J.T. and Boake, C.B. (2000), "The design, construction and operation of the LIMPET wave energy converter (Islay, Scotland)", Proceedings of the 4th European Wave Energy Conf., Aalborg, Denmark.
  3. Josset, C. and Clement, A.H. (2007), "A time-domain numerical simulator for oscillating water column wave power plants", Renew. Energ., 32(8), 1379-1402. https://doi.org/10.1016/j.renene.2006.04.016
  4. Kim, M.H. and Koo, W.C. (2005), 2D fully nonlinear numerical wave tanks, Numerical Models in Fluid Structure Interaction, Ch.2, WIT Press.
  5. Koo, W.C. and Kim, M.H. (2004), "Freely floating-body simulation by a 2D fully nonlinear numerical wave tank", Ocean Eng., 31(16), 2011-2046. https://doi.org/10.1016/j.oceaneng.2004.05.003
  6. Koo, W.C. and Kim, M.H. (2010), "Nonlinear time-domain simulation of a land-based oscillating water column", J. Waterw. Port. C. - ASCE, 136(5), 276-285. https://doi.org/10.1061/(ASCE)WW.1943-5460.0000051
  7. Koo, W.C. and Kim, M.H. (2011), "A time-domain simulation of an oscillating water column with irregular waves", Proceedings of the 2011 World Congress on Advances in Structural Engrg. and Mech.(ASEM), Seoul, Korea.
  8. Koo, W.C., Kim, M.H., Lee, D.H. and Hong, S.A. (2006), "Nonlinear time-domain simulation of pneumatic floating breakwater", Int. J. Offshore Polar., 16(1), 25-32.
  9. Liu, Z., Hyun, B.S. and Hong, K.Y. (2008), "Application of numerical wave tank to OWC air chamber for wave energy conversion", Proceedings of the 18th Int. Offshore and Polar Engrg. Conf., ISOPE, Vancouver, BC, Canada.
  10. Masuda, Y. and Miyazaki, T. (1979), "Wave power electric generation study in Japan", Proceedings of the Wave and Tidal Energy Symposium, British Hydromechanics Research Associates, Paper C.
  11. Suzuki, M. and Arakawa, C. (2000), "Guide vanes effects of Wells turbine for wave power generator", Int. J. Offshore Polar., 10(2), 153-159.
  12. Tanizawa, K. and Naito, S. (1997), "A study on parametric roll motions by fully nonlinear numerical wave tank", Proceedings of the 7th Int. Offshore and Polar Engrg. Conf., ISOPE, Honolulu, USA.

피인용 문헌

  1. Nonlinear time-domain NWT simulations for two types of a backward bent duct buoy (BBDB) compared with 2D wave-tank experiments vol.108, 2015, https://doi.org/10.1016/j.oceaneng.2015.08.038
  2. Energy extraction from the motion of an oscillating water column vol.3, pp.4, 2013, https://doi.org/10.12989/ose.2013.3.4.327
  3. 3-Dimensional Numerical Analysis of Air Flow inside OWC Type WEC Equipped with Channel of Seawater Exchange and Wave Characteristics around Its Structure (in Case of Irregular Waves) vol.30, pp.6, 2018, https://doi.org/10.9765/KSCOE.2018.30.6.253
  4. A Numerical Study on Hydrodynamic Performance of an Inclined OWC Wave Energy Converter with Nonlinear Turbine-Chamber Interaction based on 3D Potential Flow vol.8, pp.3, 2020, https://doi.org/10.3390/jmse8030176
  5. Numerical and experimental study on hydrodynamic performance of multi-level OWEC vol.10, pp.4, 2012, https://doi.org/10.12989/ose.2020.10.4.359