High-performance piezoelectric wind energy harvester with Y-shaped attachments

Junlei Wang, Shengxi Zhou, Zhien Zhang, Daniil Yurchenko

Research output: Contribution to journalArticle

131 Citations (Scopus)
16 Downloads (Pure)

Abstract

In order to improve wind energy harvesting performance, this paper proposes a novel high-performance piezoelectric wind energy harvester with Y-shaped attachments on the bluff body (GPEH-Y). When Y-shaped attachments are removed from the bluff body, the vortex-induced vibration piezoelectric energy harvester (VIVPEH) will be obtained. The Lattice-Boltzmann CFD method (LBM) used to analyze the vibration amplitude and frequency, confirms the transition from vortex induced vibration to galloping. The transition from vortex induced vibrations into galloping by adding Y-shaped attachments to the bluff body is further verified by experiments. A theoretical model of the GPEH-Y is presented to analyze its energy harvesting performance. A set of the wind tunnel tests is conducted to validate the presented GPEH-Y. The performance of piezoelectric wind energy harvesters with or without Y-shaped attachments is specifically compared, taking into the fact that the proposed design allows a simple conversion from the VIVPEH to the GPEH layout.

Original languageEnglish
Pages (from-to)645-652
Number of pages8
JournalEnergy Conversion and Management
Volume181
Early online date27 Dec 2018
DOIs
Publication statusPublished - 1 Feb 2019

Keywords

  • CFD analysis
  • Galloping
  • Piezoelectric energy harvesting
  • Vortex induced vibration
  • Y-shaped attachments

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology

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