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Geofluids
Volume 2017, Article ID 6439401, 18 pages
https://doi.org/10.1155/2017/6439401
Research Article

Study on Fluid-Induced Vibration Power Harvesting of Square Columns under Different Attack Angles

1School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, China
2School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, China

Correspondence should be addressed to Junlei Wang; moc.621@ipip4tsuj

Received 4 April 2017; Revised 16 June 2017; Accepted 11 July 2017; Published 10 August 2017

Academic Editor: Micol Todesco

Copyright © 2017 Meng Zhang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A model of the flow-vibration-electrical circuit multiphysical coupling system for solving square column vortex-induced vibration piezoelectric energy harvesting (VIVPEH) is proposed in this paper. The quasi steady state theory is adopted to describe the fluid solid coupling process of vortex-induced vibration based on the finite volume method coupled Gauss equation. The vibrational response and the quasi steady state form of the output voltage are solved by means of the matrix coefficient method and interactive computing. The results show that attack angles play an important role in the performance of square column VIVPEH, of which ° is a relatively ideal attack angle of square column VIVPEH.