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Use of half-cylinder obstacle for enhancing aeroelastic energy harvesting

Use of half-cylinder obstacle for enhancing aeroelastic energy harvesting
Use of half-cylinder obstacle for enhancing aeroelastic energy harvesting
This study aims to improve the performance of the galloping-based piezoelectric energy harvester (GPEH) by benefiting from two half-cylinder obstacles. Two half-cylinder obstacles are employed to construct a variable cross-section tube which changes the airflow characteristics near the GPEH placed inside. The performance of the GPEH in the variable cross-section tube is tested by wind tunnel experiments. The experimental results demonstrate that compared with the traditional GPEH, the cut-in speed of the GPEH with the two half-cylinder obstacles at the downstream position −1.5D is reduced by 43.87%, from 2.23 m/s to 1.55 m/s. For the highest experimental wind speed of 4.29 m/s, the output voltage of the GPEH with the two half-cylinder obstacles is increased by 109.28%, from 4.31 V to 9.02 V. Moreover, the performance of the GPEH with the obstacles can be improved by appropriately increasing the obstacle curvature and reducing the throat width. The computational fluid dynamics (CFD) simulations are conducted to qualitatively interpret the experimental discoveries. The results demonstrated that the downstream area is beneficial to the GPEH, whereas the upstream area degrades the performance.
Wind energy, galloping, half-cylinder obstacle, piezoelectric beam, wind tunnel experiment
1556-7036
Wang, Junlei
7afcea11-129b-4a82-b572-95b443c2c643
Gent, Linfeng
509eaf90-f810-4cfb-ab93-3c0d1d9fcb4e
Abdelkefi, Abdessattar
27f70fdc-8dcc-4345-be95-934c5ce417da
Yurchenko, Daniil
51a2896b-281e-4977-bb72-5f96e891fbf8
Zhang, Zhien
a601387b-2c46-40cc-aeba-c0b2cac17cfb
Yang, Kai
eb88e4fd-15d1-4405-88b4-ceca344a5545
Wang, Junlei
7afcea11-129b-4a82-b572-95b443c2c643
Gent, Linfeng
509eaf90-f810-4cfb-ab93-3c0d1d9fcb4e
Abdelkefi, Abdessattar
27f70fdc-8dcc-4345-be95-934c5ce417da
Yurchenko, Daniil
51a2896b-281e-4977-bb72-5f96e891fbf8
Zhang, Zhien
a601387b-2c46-40cc-aeba-c0b2cac17cfb
Yang, Kai
eb88e4fd-15d1-4405-88b4-ceca344a5545

Wang, Junlei, Gent, Linfeng, Abdelkefi, Abdessattar, Yurchenko, Daniil, Zhang, Zhien and Yang, Kai (2022) Use of half-cylinder obstacle for enhancing aeroelastic energy harvesting. Energy Sources, Part A: Recovery, Utilization, and Environmental Effects. (doi:10.1080/15567036.2022.2039331).

Record type: Article

Abstract

This study aims to improve the performance of the galloping-based piezoelectric energy harvester (GPEH) by benefiting from two half-cylinder obstacles. Two half-cylinder obstacles are employed to construct a variable cross-section tube which changes the airflow characteristics near the GPEH placed inside. The performance of the GPEH in the variable cross-section tube is tested by wind tunnel experiments. The experimental results demonstrate that compared with the traditional GPEH, the cut-in speed of the GPEH with the two half-cylinder obstacles at the downstream position −1.5D is reduced by 43.87%, from 2.23 m/s to 1.55 m/s. For the highest experimental wind speed of 4.29 m/s, the output voltage of the GPEH with the two half-cylinder obstacles is increased by 109.28%, from 4.31 V to 9.02 V. Moreover, the performance of the GPEH with the obstacles can be improved by appropriately increasing the obstacle curvature and reducing the throat width. The computational fluid dynamics (CFD) simulations are conducted to qualitatively interpret the experimental discoveries. The results demonstrated that the downstream area is beneficial to the GPEH, whereas the upstream area degrades the performance.

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In preparation date: 2022
Accepted/In Press date: 15 January 2022
e-pub ahead of print date: 18 February 2022
Published date: 18 February 2022
Additional Information: Funding Information: This work was supported by the National Natural Science Foundation of China (51977196 and 11802097), Open Fund of Science and Technology on Thermal Energy and Power Laboratory (TPL2019A01), SKL of HESS-2124, and China Postdoctoral Science Foundation (2020T130557). Publisher Copyright: © 2022 Taylor & Francis Group, LLC.
Keywords: Wind energy, galloping, half-cylinder obstacle, piezoelectric beam, wind tunnel experiment

Identifiers

Local EPrints ID: 456456
URI: http://eprints.soton.ac.uk/id/eprint/456456
ISSN: 1556-7036
PURE UUID: 7dba1374-b2f8-49d6-9fe3-3483706e18d7
ORCID for Daniil Yurchenko: ORCID iD orcid.org/0000-0002-4989-3634

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Date deposited: 03 May 2022 16:33
Last modified: 17 Mar 2024 07:14

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Contributors

Author: Junlei Wang
Author: Linfeng Gent
Author: Abdessattar Abdelkefi
Author: Daniil Yurchenko ORCID iD
Author: Zhien Zhang
Author: Kai Yang

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