Chin, W.K. and Ong, Z.C. and Kong, K.K. and Khoo, S.Y. and Huang, Y.H. and Chong, W.T. (2017) Enhancement of Energy Harvesting Performance by a Coupled Bluff Splitter Body and PVEH Plate through Vortex Induced Vibration near Resonance. Applied Sciences, 7 (9). p. 921. ISSN 2076-3417, DOI https://doi.org/10.3390/app7090921.
Full text not available from this repository.Abstract
Inspired by vortex induced vibration energy harvesting development as a new source of renewable energy, a T-shaped design vibration energy harvester is introduced with the aim of enhancing its performance through vortex induced vibration at near resonance conditions. The T-shaped structural model designed consists of a fixed boundary aluminum bluff splitter body coupled with a cantilever piezoelectric vibration energy harvesters (PVEH) plate model which is a piezoelectric bimorph plate made of a brass plate sandwiched between 2 lead zirconate titanate (PZT) plates. A 3-dimensional Fluid-Structure Interaction simulation analysis is carried out with Reynolds Stress Turbulence Model under wind speed of 7, 10, 12, 14, 16, 18, 19, 20, 22.5, and 25 m/s. The results showed that with 19 m/s wind speed, the model generates 75.758 Hz of vortex frequency near to the structural model's natural frequency of 76.9 Hz. Resonance lock-in therefore occurred, generating a maximum displacement amplitude of 2.09 mm or a 49.76% increment relatively in vibrational amplitude. Under the effect of resonance at the PVEH plate's fundamental natural frequency, it is able to generate the largest normalized power of 13.44 mW/cm3g2.
| Item Type: | Article |
|---|---|
| Funders: | University of Malaya: Postgraduate Research Grant (PG005-2015A), Fundamental Research Grant Scheme (FP010-2014A) |
| Uncontrolled Keywords: | Vortex induced vibration; Vibrational energy harvesting; Forced wind; Piezoelectric plate system |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Faculty of Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 12 Sep 2018 03:50 |
| Last Modified: | 12 Sep 2018 03:50 |
| URI: | http://eprints.um.edu.my/id/eprint/19206 |
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