Fluid-Solid-Electric Lock-In of Energy-Harvesting Piezoelectric Flags

Abstract : The spontaneous flapping of a flag in a steady flow can be used to power an output circuit using piezoelectric elements positioned at its surface. Here, we study numerically the effect of inductive circuits on the dynamics of this fluid-solid-electric system and on its energy-harvesting efficiency. In particular, a destabilization of the system is identified, leading to energy harvesting at lower flow velocities. Also, a frequency lock-in between the flag and the circuit is shown to significantly enhance the system’s harvesting efficiency. These results suggest promising efficiency enhancements of such flow-energy harvesters through the output circuit optimization.
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Article dans une revue
Physical Review Applied, American Physical Society, 2015, 3 (1), pp.014009. 〈10.1103/PhysRevApplied.3.014009〉
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https://hal-polytechnique.archives-ouvertes.fr/hal-01131819
Contributeur : Denis Roura <>
Soumis le : lundi 16 mars 2015 - 10:53:17
Dernière modification le : jeudi 11 janvier 2018 - 06:18:25

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Yifan Xia, Sébastien Michelin, Olivier Doaré. Fluid-Solid-Electric Lock-In of Energy-Harvesting Piezoelectric Flags. Physical Review Applied, American Physical Society, 2015, 3 (1), pp.014009. 〈10.1103/PhysRevApplied.3.014009〉. 〈hal-01131819〉

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