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Analytical study on a submerged tubular wave energy converter

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  • Meng, Qicheng
  • Zhang, Chongwei

Abstract

A submerged tubular wave energy converter, whose main structure is an upright concentric circular cylinder, is proposed. The turbine is installed near the bottom of the internal tunnel for the survivability consideration. The analytical solution for the wave diffraction problem of the structure is derived based on the linear potential flow theory. The oscillatory mass flow rate in the tunnel is particularly investigated for it can be used to assess the feasibility of the converter that utilises the vertically oscillatory water flow. The effect of the submerged tubular structure in a wave field is to guide the vertically oscillatory motion, the magnitude of which, otherwise, diminishes exponentially with depth, down to the deeper water. That greatly increases the available kinetic energy for the turbine installed in the deep water. Effects of the parameters of the tubular structure on the efficiency of the device are also discussed.

Suggested Citation

  • Meng, Qicheng & Zhang, Chongwei, 2018. "Analytical study on a submerged tubular wave energy converter," Renewable Energy, Elsevier, vol. 118(C), pages 955-964.
    • Handle: RePEc:eee:renene:v:118:y:2018:i:c:p:955-964
    DOI: 10.1016/j.renene.2017.10.110
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    References listed on IDEAS

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    1. López, Iraide & Andreu, Jon & Ceballos, Salvador & Martínez de Alegría, Iñigo & Kortabarria, Iñigo, 2013. "Review of wave energy technologies and the necessary power-equipment," Renewable and Sustainable Energy Reviews, Elsevier, vol. 27(C), pages 413-434.
    2. Zhang, Dahai & Fan, Wei & Yang, Jing & Pan, Yiwen & Chen, Ying & Huang, Haocai & Chen, Jiawang, 2016. "Reviews of power supply and environmental energy conversions for artificial upwelling," Renewable and Sustainable Energy Reviews, Elsevier, vol. 56(C), pages 659-668.
    3. Tiron, Roxana & Mallon, Fionn & Dias, Frédéric & Reynaud, Emmanuel G., 2015. "The challenging life of wave energy devices at sea: A few points to consider," Renewable and Sustainable Energy Reviews, Elsevier, vol. 43(C), pages 1263-1272.
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