Journal of the Korean Society for Marine Environment & Energy (한국해양환경ㆍ에너지학회지)

The Korean Society for Marine Environment and Energy (한국해양환경•에너지학회)
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Review of Application of VOF-Based NWT on Integrated OWC System

VOF 기반의 수치조파수조를 이용한 OWC 통합시스템 성능연구에 대한 고찰

  • Liu, Zhen (Shandong Province Key Laboratory of Ocean Engineering, Ocean University of China) ;
  • Jin, Ji-Yuan (College of Ocean Science and Technology, Korea Maritime University) ;
  • Hyun, Beom-Soo (College of Ocean Science and Technology, Korea Maritime University) ;
  • Hong, Key-Yong (Maritime and Ocean Engineering Research Institute, KORDI)
  • 류진 (중국해양대학교 산동성중점해양공학실험실) ;
  • 김길원 (한국해양대학교 조선해양시스템공학부) ;
  • 현범수 (한국해양대학교 조선해양시스템공학부) ;
  • 홍기용 (한국해양연구원 해양시스템안전연구소)
  • Received : 2012.03.02
  • Accepted : 2012.05.03
  • Published : 2012.05.25
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Abstract

Oscillating water column is the most widely used ocean energy converting systems all over the world. The operating performance is influenced by the efficiencies of the two converting stages in the OWC chamber-turbine integrated system. In order to consider the effects of the turbine, the orifice model are carried out. The VOF based Numerical Wave Tank (NWT) is utilized to simulate the water column oscillation inside the chamber and the results are compared with corresponding experimental data. This paper reviews the state of the art in interaction among wave elevation inside the chamber and air flow rate in the duct, which are considered the turbine effects. Effects of incident wave conditions and several shape parameters on the operating performance of OWC chamber are investigated numerically. The effects of the impulse turbine on the integrated system and interaction among the wave elevation, pressure and air flow velocities variations are investigated.

진동수주형 파력발전장치는 가장 널리 사용되는 파력에너지 변환장치이다. 시스템의 작동성능은 1차 변환장치인 공기실 성능과 2차 변환장치인 터빈의 성능에 지배적인 영향을 받는다고 볼 수 있다. 본 연구에서는 터빈의 영향을 시스템에 적용하기 위하여 오리피스 모델을 채택하여 성능을 검증하였고 공기실 성능예측을 위하여 VOF 기반의 수치조파수조가 사용되었다. 터빈의 영향을 고려했을 때, 공기실 내부에서 일어나는 공기와 물의 복잡한 상호작용을 수치적인 방법을 이용하여 예측하였다. 입사파 조건 및 다양한 공기실 형상이 시스템 성능에 미치는 영향에 대하여 고찰하였고, 터빈의 영향을 고려한 공기실 내의 수면, 압력, 유량의 변화를 실험적 및 수치적으로 고찰하여 비교분석을 수행하였다.

Keywords

References

  1. Hong, K.Y., Shin, S.H., Hong, D.C., Choi, H.S. and Hong, S.W., 2007, "Effects of Shape Parameters of OWC Chamber in Wave Energy Absorption", Proc. 17th Int. Offshore and Polar Eng Conf, Lisbon, Portugal, ISOPE, Vol 1, 428-433.
  2. Jayashankar, V., Anand, S. and Geetha, T., 2009, "A Twin Unidirectional Impulse Turbine Topology for OWC Based Wave Energy Plants", Renewable Energy, Vol 34, 692-698. https://doi.org/10.1016/j.renene.2008.05.028
  3. Liu, Z., Hyun, B.S., Shi, H. D. and Hong, K. Y., 2010, "Practical Simulation of Oscillating Water Column Chamber for Wave Energy Conversion", International Journal of Green Energy, 7, 337-346. https://doi.org/10.1080/15435071003796210
  4. Liu, Z., Hyun, B.S., Hong, K.Y., Lee, Y. Y. and Jin, J. Y., 2010, "A Study on Integrated OWC System within Turbine Effects", Journal of Ocean Engineering and Technology, Vol 24, No 2, 1-9.
  5. Marjani A., Castro Ruiz F., Rodriguez M.A. and Parra Santos M.T., 2008, "Numerical Modelling in Wave Energy Conversion Systems", Energy, Vol 33, 1246-1253. https://doi.org/10.1016/j.energy.2008.02.018
  6. Setoguchi, T., Santhakumar, S. and Maeda, H., 2001, "A Review of Impulse Turbines for Wave Energy Conversion, Renewable Energy", Vol 23, 261-292. https://doi.org/10.1016/S0960-1481(00)00175-0
  7. Takao, M., Setoguchi T. Kinoue, Y. and Kaneko K., 2007, "Wells Turbine with End Plates for Wave Energy Conversion", Ocean Engineering, Vol 34, 1790-1795. https://doi.org/10.1016/j.oceaneng.2006.10.009
  8. Thakker, A. and Abdulhadi, R., 2008, "The Performance of Wells Turbine Under Bi-directional Airflow", Renewable Energy, Vol 33, 2467-2474. https://doi.org/10.1016/j.renene.2008.02.013
  9. Wang, D.J. and Mahmoud, K., 2002, "Analysis of Shoreline OWC Type Wave Energy Converters", Journal of Hydrodynamics, Ser. B, Vol 1, 8-15.

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