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Numerical simulation of energy harvesting devices driven by fluid-structure interaction
Zilian, Andreas; Ravi, Srivathsan
2015ECCOMAS Thematic Conference SMART 2015
 

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Keywords :
energy harvesting; fluid-structure interaction; space-time finite elements
Abstract :
[en] A specific class of piezo-electric energy harvesting devices for renewable energy resources is investigated. The key idea is to invert the traditional intention of engineers to avoid flow-induced excitation of structures such, that flow-induced vibrations can successfully be controlled and utilised in order to provide independent power supply to small-scale electrical devices. Possible application are e.g. micro electro-mechanical systems, monitoring sensors at remote locations or even in-vivo medical devices with the advantage of increased independence on local energy storage and reduced maintenance effort. This energy converter technology involves transient boundary-coupled fluid-structure interaction, volume-coupled piezo-electric-mechanics as well as a controlling electric circuit simultaneously. In order to understand the phenomenology and to increase robustness and performance of such devices, a mathematical and numerical model of the transient strongly-coupled non-linear multi-physics system is developed for systematic computational analyses. On basis of numerical investigations of the overall system optimal designs of the flow-induced vibrating piezo-electric energy harvester shall be identified with respect to electric power supply under varying exterior conditions. Vortex-induced excitations of a cantilever piezo-electric plate are exemplarily considered for studies on robustness and efficiency.
Disciplines :
Mechanical engineering
Author, co-author :
Zilian, Andreas  ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Ravi, Srivathsan ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
External co-authors :
no
Language :
English
Title :
Numerical simulation of energy harvesting devices driven by fluid-structure interaction
Publication date :
June 2015
Event name :
ECCOMAS Thematic Conference SMART 2015
Event date :
June 2015
Audience :
International
Focus Area :
Computational Sciences
Available on ORBilu :
since 22 April 2015

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