Enhanced performance of piezoelectric energy harvester by two asymmetrical splitter plates
Enhanced performance of piezoelectric energy harvester by two asymmetrical splitter plates
This paper proposes a novel vortex-induced vibration piezoelectric energy harvester attached to two asymmetrical splitter plates (VIVPEH-S), which aims at converting the vibration mode from vortex-induced vibration (VIV) to galloping and improving the energy harvesting efficiency. The conceptual designing of VIVPEH-S with two asymmetrical splitter plates under various installation angles is first conducted, the experimental prototypes are then fabricated and the wind tunnel experimental system is constructed, and the simulation model of the harvester system is finally established. The effects of the installation angles of two asymmetrical splitter plates on the vibration characteristics and harvesting performance of VIVPEH-S are experimentally investigated, and the vortex shedding characteristic and mode conversion mechanism are revealed by CFD simulation. The results demonstrate that the installation of the asymmetrical splitter plates changes the vortex shedding characteristics and transforms the vibration mode from VIV to galloping, which can significantly broaden the working bandwidth, and improve the energy harvesting performance. A maximum enhancement ratio of the output power of VIVPEH-S with α = 60° and β = 90° is up to 471.2% over the conventional VIVPEH. This work provides an important foundation for designing a more efficient piezoelectric energy harvester by using asymmetrical splitter plates.
Asymmetrical splitter plates, Energy harvesting, Enhanced performance, Galloping, Vortex-induced vibration
Wang, Junlei
d55dc6d0-734d-46e1-bedd-5ecc18df8702
Xia, Bing
801b327c-0493-491b-a342-9a027b72ab94
Yurchenko, Daniil
51a2896b-281e-4977-bb72-5f96e891fbf8
Litak, Grzegorz
03a00531-56de-4e58-9aa7-d8018491262c
Li, Yong
54918a50-109d-48f2-be51-93a669fa1aec
Tian, Haigang
e0c6e2cd-2921-4098-b711-1c1c0c741e57
15 February 2023
Wang, Junlei
d55dc6d0-734d-46e1-bedd-5ecc18df8702
Xia, Bing
801b327c-0493-491b-a342-9a027b72ab94
Yurchenko, Daniil
51a2896b-281e-4977-bb72-5f96e891fbf8
Litak, Grzegorz
03a00531-56de-4e58-9aa7-d8018491262c
Li, Yong
54918a50-109d-48f2-be51-93a669fa1aec
Tian, Haigang
e0c6e2cd-2921-4098-b711-1c1c0c741e57
Wang, Junlei, Xia, Bing, Yurchenko, Daniil, Litak, Grzegorz, Li, Yong and Tian, Haigang
(2023)
Enhanced performance of piezoelectric energy harvester by two asymmetrical splitter plates.
Ocean Engineering, 270, [113614].
(doi:10.1016/j.oceaneng.2022.113614).
Abstract
This paper proposes a novel vortex-induced vibration piezoelectric energy harvester attached to two asymmetrical splitter plates (VIVPEH-S), which aims at converting the vibration mode from vortex-induced vibration (VIV) to galloping and improving the energy harvesting efficiency. The conceptual designing of VIVPEH-S with two asymmetrical splitter plates under various installation angles is first conducted, the experimental prototypes are then fabricated and the wind tunnel experimental system is constructed, and the simulation model of the harvester system is finally established. The effects of the installation angles of two asymmetrical splitter plates on the vibration characteristics and harvesting performance of VIVPEH-S are experimentally investigated, and the vortex shedding characteristic and mode conversion mechanism are revealed by CFD simulation. The results demonstrate that the installation of the asymmetrical splitter plates changes the vortex shedding characteristics and transforms the vibration mode from VIV to galloping, which can significantly broaden the working bandwidth, and improve the energy harvesting performance. A maximum enhancement ratio of the output power of VIVPEH-S with α = 60° and β = 90° is up to 471.2% over the conventional VIVPEH. This work provides an important foundation for designing a more efficient piezoelectric energy harvester by using asymmetrical splitter plates.
Text
Plate_splitter_Jwang2023
- Accepted Manuscript
More information
Accepted/In Press date: 31 December 2022
e-pub ahead of print date: 6 January 2023
Published date: 15 February 2023
Additional Information:
Funding Information:
This work was supported by the National Natural Science Foundation of China (Grant No.: 51977196 and 52277227 ), China Postdoctoral Science Foundation ( 2020T130557 ), Henan Province Science Foundation for Youths ( 202300410422 ), and Program for Science & Technology Innovation Talents in Universities of Henan Province (No. 23HASTIT010 ), the Ministry of Science and Higher Education in Poland under the project DIALOG 0019/DLG/2019/10 in the years 2019–2022.
Publisher Copyright:
© 2023 Elsevier Ltd
Keywords:
Asymmetrical splitter plates, Energy harvesting, Enhanced performance, Galloping, Vortex-induced vibration
Identifiers
Local EPrints ID: 474694
URI: http://eprints.soton.ac.uk/id/eprint/474694
ISSN: 0029-8018
PURE UUID: 5824c960-d07a-42ac-a447-c5e6ed6eb204
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Date deposited: 01 Mar 2023 17:58
Last modified: 17 Mar 2024 07:41
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Contributors
Author:
Junlei Wang
Author:
Bing Xia
Author:
Daniil Yurchenko
Author:
Grzegorz Litak
Author:
Yong Li
Author:
Haigang Tian
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