International Journal of Naval Architecture and Ocean Engineering

  • 제9권6호
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  • Pages.668-676
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  • 2017
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  • 2092-6782(pISSN)
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  • 2092-6790(eISSN)
대한조선학회 (The Society of Naval Architects of Korea)
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Influence of slot width on the performance of multi-stage overtopping wave energy converters

  • Jungrungruengtaworn, Sirirat (Department of Naval Architecture and Ocean Systems Engineering, Korea Maritime and Ocean University) ;
  • Hyun, Beom-Soo (Department of Naval Architecture and Ocean Systems Engineering, Korea Maritime and Ocean University)
  • 투고 : 2016.08.31
  • 심사 : 2017.02.18
  • 발행 : 2017.11.30
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초록

A two-dimensional numerical investigation is performed to study the influence of slot width of multi-stage stationary floating overtopping wave energy devices on overtopping flow rate and performance. The hydraulic efficiency based on captured crest energy of different device layouts is compared with that of single-stage device to determine the effect of the geometrical design. The results show optimal trends giving a huge increase in overtopping energy. Plots of efficiency versus the relative slot width show that, for multi-stage devices, the greatest hydraulic efficiency is achieved at an intermediate value of the variable within the parametric range considered, relative slot width of 0.15 and 0.2 depending on design layouts. Moreover, an application of adaptive slot width of multi-stage device is investigated. The numerical results show that the overall hydraulic efficiency of non-adaptive and adaptive slot devices are approximately on par. The effect of adaptive slot width on performance can be negligible.

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참고문헌

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  2. Analyzing the Performance of Wave-Energy Generator Systems (SSG) for the Southern Coasts of Iran, in the Persian Gulf and Oman Sea vol.11, pp.11, 2017, https://doi.org/10.3390/en11113209
  3. Numerical and experimental study on hydrodynamic performance of multi-level OWEC vol.10, pp.4, 2017, https://doi.org/10.12989/ose.2020.10.4.359
  4. Three-dimensional effects on the performance of multi-level overtopping wave energy converter vol.1137, pp.1, 2017, https://doi.org/10.1088/1757-899x/1137/1/012016