Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Numerical Analysis on Wave Energy Absorption of OWC-type Wave Power Generation

진동수주형 파력발전기의 에너지 흡수효율 해석

  • Kyoung, Jo-Hyun (Maritime & Ocean Engineering Research Institute, KORDI) ;
  • Hong, Sa-Young (Maritime & Ocean Engineering Research Institute, KORDI) ;
  • Hong, Do-Chun (Center for Advanced Transportation Vehicules, Chungnam National University)
  • 경조현 (한국해양연구원 해양시스템안전연구소) ;
  • 홍사영 (한국해양연구원 해양시스템안전연구소) ;
  • 홍도천 (충남대학교 첨단수송체연구소)
  • Published : 2006.08.01
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Abstract

A numerical analysis is made to investigate the wave absorption efficiency of a OWC-type wave power generator. Energy absorption by an OWC(Oscillating Water Column) air-chamber is computed in regular waves, taking account of the oscillating surface-pressure, due to pressure drop, across the duct of the air chamber. The problem is formulated in the scope of potential theory and solved by the Localized Finite Element Method(LFEM), based on the classical variational principle. The efficiency of energy absorption is investigated by. changing wave conditions, sea-bottom slope and pressure drop coefficient.

Keywords

References

  1. 경조현, 김장환, 배광준 (2004). '퇴적 침전구에서 발생하는 내면파 유동에 의한 유체력해석', 한국해양환경공학회지, 제7권, 제4호, pp 192-198
  2. 길현권, 배광준 (1985). '2차원 자유표면파 문제에서의 국소유한 요소법의 응용', 대한조선학회지, 제22권, 제3호, pp 9-18
  3. 김진하, 류재문, 홍도천, 홍석원 (2006). 'BBDB형 진동수주 파력 발전장치의 운동 및 파랑표류력 연구', 한국해양공학회지, 제 20권, 제2호, pp 22-28
  4. 배광준, 김세은 (1987). '3차원 자유표면파 문제에서의 국소유한 요소법의 응용', 대한조선학회지, 제24권, 제3호, pp 1-8
  5. 최학선, 홍석원, 김진하, 류재문 (2004). 'OWC형 파력발전 공기 챔버의 공기감쇠력 실험연구', 한국해양공학회지, 제18권, 제4호, pp 8-14
  6. 홍도천 (2002). '부유식 OWC 챔버의 파중 운동해석', 한국해양공학회지, 제 16권, 제3호, pp 19-27
  7. Bai, K.J. (1977). 'A localized finite-element method for steady three-dimensional free-surface flow problems', 2nd International Conference on Numerical Ship Hydrodynamics, pp 1-10
  8. Bai, K.J., and R. Yeung. (1974). 'Numerical solutions to free surface flow problems', Proc. 10th Symp. Naval Hydrodyn., Office Naval Res., Cambridge, Mass., pp 609-647
  9. Evans, D.V. (1976). 'A theory for wave-power absorption by oscillating bodies', J. Fluid Mech., Vol 77, pp 1-25 https://doi.org/10.1017/S0022112076001109
  10. Falnes, J., McIver, P. (1985). 'Surface wave interactions with systems of oscillating bodies and pressure distributions', Applied Ocean Research, Vol 7, No 4, pp 225-234 https://doi.org/10.1016/0141-1187(85)90029-X
  11. Falcao, A.F.de O., Sarmento, A.J.N.A. (1980). 'Wave generation by a periodic surface pressure and its application in wave-energy extraction', 15th Int. Cong. Theo. Appl. Mech., Toronto
  12. Hong, D.C., Hong, S.Y., Hong, S.W. (2004). 'Numerical study of the motions and drift force of a floating OWC device', Ocean Engineering, Vol 31, pp 139-164 https://doi.org/10.1016/S0029-8018(03)00118-5
  13. Ogilvie, T.F. (1969). 'Oscillating pressure fields on a free surface', Univ. Michigan, College of Eng. Report No 030