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Article Dans Une Revue Physical Review Applied Année : 2015

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

Résumé

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.

Dates et versions

hal-01131819 , version 1 (16-03-2015)

Identifiants

Citer

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