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Journal of Mechanical Science and Technology

, Volume 33, Issue 1, pp 255–268 | Cite as

Parametric study of an undulating plate in a power-extraction regime

  • Xiaojing Sun
  • Jihua Zhang
  • Huizhen Li
  • Diangui HuangEmail author
Article
  • 23 Downloads

Abstract

Our previous studies suggest that instead of propulsion, a body undergoing lateral traveling-wave-like motions can also work like a kinetic energy harvester which extracts energy from moving fluids including wind and water currents. Parameters including wavelength, dimensionless wave velocity and amplitude have critical effects on the energy extraction efficiencies of this type of undulating foil energy harvester. In this paper, a two-dimensional, numerical simulation of a flexible plate undergoing a traveling wave motion was then conducted. At a given dimensionless wave speed, it is found that there exits an optimum wavelength at which this type of energy harvester can extract the maximum amount of kinematic energy from the flow. Moreover, the optimum value of the wavelength increases as amplitude increases. A high efficiency area appears under the optimal combination of wavelength and amplitude. At a given amplitude, the optimal dimensionless wave speed for maximum power extraction decreases with increasing wavelength. The high efficiency area of the undulating plate resulting from the optimal combination of wavelength and wave speed is identified. At a given wave length, there is an optimal value of amplitude at which the maximum energy extraction can be achieved. In this case, a high efficiency area representing the optimal combination of amplitude and wave speed has also been discovered.

Keywords

Energy extraction efficiency Undulating plate Motion parameters Numerical simulation Optimal combination parameters 

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Copyright information

© The Korean Society of Mechanical Engineers and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Xiaojing Sun
    • 1
  • Jihua Zhang
    • 1
  • Huizhen Li
    • 1
  • Diangui Huang
    • 1
    Email author
  1. 1.School of Energy and Power EngineeringUniversity of Shanghai for Science and TechnologyShanghaiChina

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