The Effects of Reynolds Number on Energy Harvesting from FIV by a Square Cylinder
Under the action of incoming flow, the square cylinder can generate more intense vibration responses than the circular cylinder, which is beneficial for energy harvesting. Numerical simulations for FIV of the square-cylinder energy conversion system are carried out. URANS equations are used in conju...
| Format: | Article |
|---|---|
| Language: | zho |
| Published: |
EDP Sciences
2020-10-01
|
| Series: | Xibei Gongye Daxue Xuebao |
| Subjects: | |
| Online Access: | https://www.jnwpu.org/articles/jnwpu/full_html/2020/05/jnwpu2020385p928/jnwpu2020385p928.html |
| _version_ | 1797642285504004096 |
|---|---|
| collection | DOAJ |
| description | Under the action of incoming flow, the square cylinder can generate more intense vibration responses than the circular cylinder, which is beneficial for energy harvesting. Numerical simulations for FIV of the square-cylinder energy conversion system are carried out. URANS equations are used in conjunction with the shear stress transport k-ω turbulence model to predict the flow, and the equations for vibrations are solved by the Newmark-β algorithm. The present numerical method is validated against the published data with good consistency. The Reduced velocity Ur is varied from 1-20, with corresponding Reynolds numbers of 24 000-160 000. The numerical results indicate that the Reynolds number significantly affects the frequency response, amplitude response, vortex shedding mode, and energy conversion efficiency. The highest efficiency point locates at Re=88 000, with a value of 7.156%. When Re>120 000, the system transits from vortex-induced vibration into galloping, and its vibration responses as well as energy harvesting characteristics change sharply. Fully developed galloping motion occurs when Re>144 000. |
| first_indexed | 2024-03-11T13:57:51Z |
| format | Article |
| id | doaj.art-197bf3734c92428eab8e29dad55a9cb4 |
| institution | Directory Open Access Journal |
| issn | 1000-2758 2609-7125 |
| language | zho |
| last_indexed | 2024-03-11T13:57:51Z |
| publishDate | 2020-10-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Xibei Gongye Daxue Xuebao |
| spelling | doaj.art-197bf3734c92428eab8e29dad55a9cb42023-11-02T05:48:00ZzhoEDP SciencesXibei Gongye Daxue Xuebao1000-27582609-71252020-10-0138592893610.1051/jnwpu/20203850928jnwpu2020385p928The Effects of Reynolds Number on Energy Harvesting from FIV by a Square CylinderUnder the action of incoming flow, the square cylinder can generate more intense vibration responses than the circular cylinder, which is beneficial for energy harvesting. Numerical simulations for FIV of the square-cylinder energy conversion system are carried out. URANS equations are used in conjunction with the shear stress transport k-ω turbulence model to predict the flow, and the equations for vibrations are solved by the Newmark-β algorithm. The present numerical method is validated against the published data with good consistency. The Reduced velocity Ur is varied from 1-20, with corresponding Reynolds numbers of 24 000-160 000. The numerical results indicate that the Reynolds number significantly affects the frequency response, amplitude response, vortex shedding mode, and energy conversion efficiency. The highest efficiency point locates at Re=88 000, with a value of 7.156%. When Re>120 000, the system transits from vortex-induced vibration into galloping, and its vibration responses as well as energy harvesting characteristics change sharply. Fully developed galloping motion occurs when Re>144 000.https://www.jnwpu.org/articles/jnwpu/full_html/2020/05/jnwpu2020385p928/jnwpu2020385p928.htmlvortex induced vibrationgallopingenergy harvestingreynolds numbersquare cylinder |
| spellingShingle | The Effects of Reynolds Number on Energy Harvesting from FIV by a Square Cylinder Xibei Gongye Daxue Xuebao vortex induced vibration galloping energy harvesting reynolds number square cylinder |
| title | The Effects of Reynolds Number on Energy Harvesting from FIV by a Square Cylinder |
| title_full | The Effects of Reynolds Number on Energy Harvesting from FIV by a Square Cylinder |
| title_fullStr | The Effects of Reynolds Number on Energy Harvesting from FIV by a Square Cylinder |
| title_full_unstemmed | The Effects of Reynolds Number on Energy Harvesting from FIV by a Square Cylinder |
| title_short | The Effects of Reynolds Number on Energy Harvesting from FIV by a Square Cylinder |
| title_sort | effects of reynolds number on energy harvesting from fiv by a square cylinder |
| topic | vortex induced vibration galloping energy harvesting reynolds number square cylinder |
| url | https://www.jnwpu.org/articles/jnwpu/full_html/2020/05/jnwpu2020385p928/jnwpu2020385p928.html |