Energy harvesting; Fluid-structure interaction; FEniCS
Abstract :
[en] The subject deals with the simulation of flow-induced energy harvesters. We focus in particular on the modelling of autonomous piezo-ceramic power generators to convert ambient fluid-flow energy into electrical energy. The vibrations of an immersed electromechanical structure with large amplitude have to be taken into account in that case. One challenge consists in modelling and predicting the nonlinear coupled dynamic behaviour for the improved design of such devices. The set of governing equations is expressed in integral form, using the method of weighted residuals, and discretized with finite elements using the
open source package FEniCS.
Preliminary results of separated problems using FEniCS will be detailed and discussed (e.g. Navier-Stokes with or without moving meshes, nonlinear elasticity, aeroelasticity and electromechanical coupling). The objective is to validate each problem independently before coupling all the phenomena in a monolithic framework. Those simulations involve nonlinearities at many levels of modeling. The perspective of using reduced order models to limit the computational cost (in time and memory) will be discussed in an outlook to this work.
Disciplines :
Mechanical engineering
Author, co-author :
Hoareau, Christophe ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Shang, Lan ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Zilian, Andreas ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
External co-authors :
no
Language :
English
Title :
Toward fluid-structure-piezoelectric simulations applied to flow-induced energy harvesters
Publication date :
15 November 2019
Number of pages :
A0
Event name :
Journées Jeunes Chercheurs en vibrations, Acoustique et Bruit 2019 (JJCAB 2019)