Three different aspect-ratio rectangular wings are designed and experimentally tested to produce self-sustained aeroelastic oscillations for energy harvesting via implementing a piezoelectric generator. Sensitivity measurements are conducted first to determine the critical conditions producing such oscillations with a dominant frequency of 1 Hz. Furthermore, the energy harvesting performance is maximized as the piezoelectric generator is implemented in parallel with oncoming flow streamline. Approximately 55 mW electricity is produced from a wing with a surface area of 0.025 m2. Unlike conventional wind turbine technology, the present work opens up another possible way to harvest energy via nonlinear aeroelastic oscillations.
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Research Article| September 11 2014
Energy harvesting from self-sustained aeroelastic limit cycle oscillations of rectangular wings
Dan Zhao, Evan Ega; Energy harvesting from self-sustained aeroelastic limit cycle oscillations of rectangular wings. Appl. Phys. Lett. 8 September 2014; 105 (10): 103903. https://doi.org/10.1063/1.4895457
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