Research on Energy Harvesting by Flow-Induced Vibration Under Interference Effect
The piezoelectric energy harvesting system by flowinduced vibration under interference effect is experimentally studied. The bluff body cross-section of the piezoelectric energy harvesting system is square, placing an interference plate downstream of the blunt body. Taking the distance (<tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$D$</tex>) between the interference plate and the square bluff body as the experiment variable, <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$D=L, 1.5 L$</tex> and <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$2 L$</tex> (<tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$L$</tex> represent the side length of square bluff body) were designed. Properly adjusting the interference effect of the splitter plate can intensify the flowinduced vibration of the bluff body, thereby improving the energy harvesting effect of the piezoelectric energy harvesting system. When <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$D=L-2 L$</tex>, the wake interference effect can enhance the energy harvesting effect at <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$0.125 ~\mathrm{m} / \mathrm{s}<U<0.35 ~\mathrm{m} / \mathrm{s}$</tex>. Furthermore, when <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$D=L$</tex> and <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$1.5 L$</tex>, the stability of the energy harvesting effect is improved. However, when <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$D=L$</tex>, the vibration of the upstream bluff body is suppressed at <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\boldsymbol{U}>0.35 ~\mathrm{m} / \mathrm{s}$</tex>, resulting in a reduction of the energy harvesting effect.
Authors
- Zhen Liu (ORCID: https://orcid.org/0000-0002-5683-9775)
- Lianjie Gao
Institutions
- Shandong University of Science and Technology (CN)
Publication Details
- Published
- 2024-12-06
- DOI
- https://doi.org/10.1109/iaecst64597.2024.11117585
- Primary Topic
- Vibration Control and Rheological Fluids
- Type
- article
- Field-Weighted Citation Impact
- 0.00