Low-Grade Flow Energy Harvesting by Low-Mass-Ratio Oscillating Bent Plate
Low-grade renewable energy possesses large reserves and a wide distribution in the environment, but it is far from fully exploited due to the high cost–income ratio when using traditional convertors. A fluid-induced-vibration-based flow energy convertor with a low-cost bent plate as an oscillator is...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/15/5/1606 |
| _version_ | 1797475307327848448 |
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| author | Wei Jiang Fan Wu Ziyue Mei Rui Shi Danmei Xie |
| author_facet | Wei Jiang Fan Wu Ziyue Mei Rui Shi Danmei Xie |
| author_sort | Wei Jiang |
| collection | DOAJ |
| description | Low-grade renewable energy possesses large reserves and a wide distribution in the environment, but it is far from fully exploited due to the high cost–income ratio when using traditional convertors. A fluid-induced-vibration-based flow energy convertor with a low-cost bent plate as an oscillator is proposed to achieve better energy converting performance for low-grade flow energy conversion. The energy extraction performance and dynamic response of the bent plate are assessed numerically. The results demonstrate that the prescribed single-DOF (degree of freedom) bent plate can reach the maximum efficiency of 29.6% and power coefficient of 2.36 at the relative plunging amplitude of 3.5, while the double-DOF bent plate achieves a maximum efficiency of 37.3% and power coefficient of 1.42 at a smaller amplitude of 1.4. It is discovered that the adoption of pitching motion can help to control the variation pattern of the effective AOA (angle of attack), while the camber of the bent plate also regulates the effective AOA from the geometrical respect. The FIV-based single-DOF convertor can achieve an energy converting efficiency of 29.3% and approach the ideal sinusoidal motion trajectory closely, indicating that the optimal active motion mode can be realized by the passive motion mode with the appropriate choice of the dynamic parameters. |
| first_indexed | 2024-03-09T20:43:15Z |
| format | Article |
| id | doaj.art-ebc0b87372924be8b3bded4e48a89150 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T20:43:15Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-ebc0b87372924be8b3bded4e48a891502023-11-23T22:54:51ZengMDPI AGEnergies1996-10732022-02-01155160610.3390/en15051606Low-Grade Flow Energy Harvesting by Low-Mass-Ratio Oscillating Bent PlateWei Jiang0Fan Wu1Ziyue Mei2Rui Shi3Danmei Xie4School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, ChinaSchool of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, ChinaSchool of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, ChinaSchool of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, ChinaKey Laboratory of Hydraulic Machinery Transients (MOE), Wuhan University, Wuhan 430072, ChinaLow-grade renewable energy possesses large reserves and a wide distribution in the environment, but it is far from fully exploited due to the high cost–income ratio when using traditional convertors. A fluid-induced-vibration-based flow energy convertor with a low-cost bent plate as an oscillator is proposed to achieve better energy converting performance for low-grade flow energy conversion. The energy extraction performance and dynamic response of the bent plate are assessed numerically. The results demonstrate that the prescribed single-DOF (degree of freedom) bent plate can reach the maximum efficiency of 29.6% and power coefficient of 2.36 at the relative plunging amplitude of 3.5, while the double-DOF bent plate achieves a maximum efficiency of 37.3% and power coefficient of 1.42 at a smaller amplitude of 1.4. It is discovered that the adoption of pitching motion can help to control the variation pattern of the effective AOA (angle of attack), while the camber of the bent plate also regulates the effective AOA from the geometrical respect. The FIV-based single-DOF convertor can achieve an energy converting efficiency of 29.3% and approach the ideal sinusoidal motion trajectory closely, indicating that the optimal active motion mode can be realized by the passive motion mode with the appropriate choice of the dynamic parameters.https://www.mdpi.com/1996-1073/15/5/1606oscillating bent plateenergy extractionvortex induced vibrationrenewable energylow mass ratio |
| spellingShingle | Wei Jiang Fan Wu Ziyue Mei Rui Shi Danmei Xie Low-Grade Flow Energy Harvesting by Low-Mass-Ratio Oscillating Bent Plate Energies oscillating bent plate energy extraction vortex induced vibration renewable energy low mass ratio |
| title | Low-Grade Flow Energy Harvesting by Low-Mass-Ratio Oscillating Bent Plate |
| title_full | Low-Grade Flow Energy Harvesting by Low-Mass-Ratio Oscillating Bent Plate |
| title_fullStr | Low-Grade Flow Energy Harvesting by Low-Mass-Ratio Oscillating Bent Plate |
| title_full_unstemmed | Low-Grade Flow Energy Harvesting by Low-Mass-Ratio Oscillating Bent Plate |
| title_short | Low-Grade Flow Energy Harvesting by Low-Mass-Ratio Oscillating Bent Plate |
| title_sort | low grade flow energy harvesting by low mass ratio oscillating bent plate |
| topic | oscillating bent plate energy extraction vortex induced vibration renewable energy low mass ratio |
| url | https://www.mdpi.com/1996-1073/15/5/1606 |
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