Numerical Analysis of Hydrokinetic Energy Harvesting from Flow-induced Vibration of a Cylinder with a Single Protrusion
To better capture current energy based on flow-induced vibration (FIV), a new cylindrical oscillator is proposed in this paper that attaches a single protrusion to a bare cylinder with different shapes (square, triangular, and semi-elliptical) and different circumferential locations (a = 0°, 45°, 90...
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Isfahan University of Technology
2025-05-01
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| Series: | Journal of Applied Fluid Mechanics |
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| Online Access: | https://www.jafmonline.net/article_2673_ceb7784aad4d1152ca6d4dad122bdecb.pdf |
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| author | Y. Zhao S. Qu X. Wang |
| author_facet | Y. Zhao S. Qu X. Wang |
| author_sort | Y. Zhao |
| collection | DOAJ |
| description | To better capture current energy based on flow-induced vibration (FIV), a new cylindrical oscillator is proposed in this paper that attaches a single protrusion to a bare cylinder with different shapes (square, triangular, and semi-elliptical) and different circumferential locations (a = 0°, 45°, 90°, 135°, 180°). Two-dimensional (2D) numerical simulations were performed to investigate the vibration characteristics, equilibrium position, wake vortex mode, and energy harvesting characteristics of the cylindrical oscillator over the reduced frequency range of 2 ≤ U*≤ 14. Regarding the protrusion angle, the vibration amplitude of the cylinder was obviously enhanced at a = 45° and 180° but was suppressed at a = 135°. Specifically, the vibration amplitude of the cylinder with the square protrusion can reach up to 3.1D, an increase of 204% compared to that of the bare cylinder. Additionally, as the flow velocity increased, the equilibrium position of the vibrating cylinder at a = 90° had the largest downward offset, reaching a value of -2.42D. The maximum power of 1.33 W was reached for the cylinder with the square protrusion at a = 45°, but at a= 90°, a stable energy recovery bandwidth was achieved. In addition, high energy harvesting efficiency was mainly concentrated on the extremely low flow velocity range, with a maximal efficiency of 9.67%. |
| format | Article |
| id | doaj-art-aa59801a1b524f3e9f8317ec0bfa81b2 |
| institution | OA Journals |
| issn | 1735-3572 1735-3645 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | Journal of Applied Fluid Mechanics |
| spelling | doaj-art-aa59801a1b524f3e9f8317ec0bfa81b22025-08-20T01:49:46ZengIsfahan University of TechnologyJournal of Applied Fluid Mechanics1735-35721735-36452025-05-011871796180810.47176/jafm.18.7.32362673Numerical Analysis of Hydrokinetic Energy Harvesting from Flow-induced Vibration of a Cylinder with a Single ProtrusionY. Zhao0S. Qu1X. Wang2Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang, Zhenjiang 212013, ChinaResearch Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang, Zhenjiang 212013, ChinaResearch Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang, Zhenjiang 212013, ChinaTo better capture current energy based on flow-induced vibration (FIV), a new cylindrical oscillator is proposed in this paper that attaches a single protrusion to a bare cylinder with different shapes (square, triangular, and semi-elliptical) and different circumferential locations (a = 0°, 45°, 90°, 135°, 180°). Two-dimensional (2D) numerical simulations were performed to investigate the vibration characteristics, equilibrium position, wake vortex mode, and energy harvesting characteristics of the cylindrical oscillator over the reduced frequency range of 2 ≤ U*≤ 14. Regarding the protrusion angle, the vibration amplitude of the cylinder was obviously enhanced at a = 45° and 180° but was suppressed at a = 135°. Specifically, the vibration amplitude of the cylinder with the square protrusion can reach up to 3.1D, an increase of 204% compared to that of the bare cylinder. Additionally, as the flow velocity increased, the equilibrium position of the vibrating cylinder at a = 90° had the largest downward offset, reaching a value of -2.42D. The maximum power of 1.33 W was reached for the cylinder with the square protrusion at a = 45°, but at a= 90°, a stable energy recovery bandwidth was achieved. In addition, high energy harvesting efficiency was mainly concentrated on the extremely low flow velocity range, with a maximal efficiency of 9.67%.https://www.jafmonline.net/article_2673_ceb7784aad4d1152ca6d4dad122bdecb.pdfflow-induced vibration (fiv)energy harvestingcylindrical oscillatorcfdpassive turbulence control (ptc) |
| spellingShingle | Y. Zhao S. Qu X. Wang Numerical Analysis of Hydrokinetic Energy Harvesting from Flow-induced Vibration of a Cylinder with a Single Protrusion Journal of Applied Fluid Mechanics flow-induced vibration (fiv) energy harvesting cylindrical oscillator cfd passive turbulence control (ptc) |
| title | Numerical Analysis of Hydrokinetic Energy Harvesting from Flow-induced Vibration of a Cylinder with a Single Protrusion |
| title_full | Numerical Analysis of Hydrokinetic Energy Harvesting from Flow-induced Vibration of a Cylinder with a Single Protrusion |
| title_fullStr | Numerical Analysis of Hydrokinetic Energy Harvesting from Flow-induced Vibration of a Cylinder with a Single Protrusion |
| title_full_unstemmed | Numerical Analysis of Hydrokinetic Energy Harvesting from Flow-induced Vibration of a Cylinder with a Single Protrusion |
| title_short | Numerical Analysis of Hydrokinetic Energy Harvesting from Flow-induced Vibration of a Cylinder with a Single Protrusion |
| title_sort | numerical analysis of hydrokinetic energy harvesting from flow induced vibration of a cylinder with a single protrusion |
| topic | flow-induced vibration (fiv) energy harvesting cylindrical oscillator cfd passive turbulence control (ptc) |
| url | https://www.jafmonline.net/article_2673_ceb7784aad4d1152ca6d4dad122bdecb.pdf |
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