Numerical Investigation of Vortex-Induced Vibrations of a Rotating Cylinder near a Plane Wall
Numerical simulations are carried out to investigate the vortex-induced vibrations of a two-degree-of-freedom (2DOF) near-wall rotating cylinder. Considering the effects of gap ratio, reduced velocity and rotational rate, the amplitude response, wake variations and fluid forces are analyzed, with th...
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MDPI AG
2023-06-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/11/6/1202 |
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| author | Ran Li Jie Gong Wei Chen Jie Li Wei Chai Chang-kyu Rheem Xiaobin Li |
| author_facet | Ran Li Jie Gong Wei Chen Jie Li Wei Chai Chang-kyu Rheem Xiaobin Li |
| author_sort | Ran Li |
| collection | DOAJ |
| description | Numerical simulations are carried out to investigate the vortex-induced vibrations of a two-degree-of-freedom (2DOF) near-wall rotating cylinder. Considering the effects of gap ratio, reduced velocity and rotational rate, the amplitude response, wake variations and fluid forces are analyzed, with the Reynolds number of 200 and the mass ratio set to 1.6. The correlative mechanism in the wake–hydrodynamics–vibration is revealed. The results show that the influence of the wall dominates the vortex-induced vibration of the cylinder. The effect of the wall on the vibration weakens as the gap ratio increases, and the effect of the wall on the vibration is negligible when <i>H/D</i> > 1.1. The forward rotation of the cylinder enhances the wall effect, while the backward rotation presents the reverse effect. The vortex-induced vibration of the cylinder is suppressed when 0 < <i>α</i> < 1, and the amplitude range is concentrated at <i>V<sub>r</sub></i> ∈ (3, 5). The wake mode can be divided into five modes, and the wake modes are clarified under different rotation rates and reduced velocities. |
| first_indexed | 2024-03-11T02:16:10Z |
| format | Article |
| id | doaj.art-2c11e1616e214da49b3c65aee35be0b6 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-11T02:16:10Z |
| publishDate | 2023-06-01 |
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| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-2c11e1616e214da49b3c65aee35be0b62023-11-18T11:07:17ZengMDPI AGJournal of Marine Science and Engineering2077-13122023-06-01116120210.3390/jmse11061202Numerical Investigation of Vortex-Induced Vibrations of a Rotating Cylinder near a Plane WallRan Li0Jie Gong1Wei Chen2Jie Li3Wei Chai4Chang-kyu Rheem5Xiaobin Li6School of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology, Wuhan 430063, ChinaSchool of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology, Wuhan 430063, ChinaSchool of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology, Wuhan 430063, ChinaSchool of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology, Wuhan 430063, ChinaSchool of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology, Wuhan 430063, ChinaDepartment of Ocean Technology, Policy and Environment, The University of Tokyo, Tokyo 153-8505, JapanSchool of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology, Wuhan 430063, ChinaNumerical simulations are carried out to investigate the vortex-induced vibrations of a two-degree-of-freedom (2DOF) near-wall rotating cylinder. Considering the effects of gap ratio, reduced velocity and rotational rate, the amplitude response, wake variations and fluid forces are analyzed, with the Reynolds number of 200 and the mass ratio set to 1.6. The correlative mechanism in the wake–hydrodynamics–vibration is revealed. The results show that the influence of the wall dominates the vortex-induced vibration of the cylinder. The effect of the wall on the vibration weakens as the gap ratio increases, and the effect of the wall on the vibration is negligible when <i>H/D</i> > 1.1. The forward rotation of the cylinder enhances the wall effect, while the backward rotation presents the reverse effect. The vortex-induced vibration of the cylinder is suppressed when 0 < <i>α</i> < 1, and the amplitude range is concentrated at <i>V<sub>r</sub></i> ∈ (3, 5). The wake mode can be divided into five modes, and the wake modes are clarified under different rotation rates and reduced velocities.https://www.mdpi.com/2077-1312/11/6/1202VIVrotating cylinderwall effectvortex suppression2DOF |
| spellingShingle | Ran Li Jie Gong Wei Chen Jie Li Wei Chai Chang-kyu Rheem Xiaobin Li Numerical Investigation of Vortex-Induced Vibrations of a Rotating Cylinder near a Plane Wall Journal of Marine Science and Engineering VIV rotating cylinder wall effect vortex suppression 2DOF |
| title | Numerical Investigation of Vortex-Induced Vibrations of a Rotating Cylinder near a Plane Wall |
| title_full | Numerical Investigation of Vortex-Induced Vibrations of a Rotating Cylinder near a Plane Wall |
| title_fullStr | Numerical Investigation of Vortex-Induced Vibrations of a Rotating Cylinder near a Plane Wall |
| title_full_unstemmed | Numerical Investigation of Vortex-Induced Vibrations of a Rotating Cylinder near a Plane Wall |
| title_short | Numerical Investigation of Vortex-Induced Vibrations of a Rotating Cylinder near a Plane Wall |
| title_sort | numerical investigation of vortex induced vibrations of a rotating cylinder near a plane wall |
| topic | VIV rotating cylinder wall effect vortex suppression 2DOF |
| url | https://www.mdpi.com/2077-1312/11/6/1202 |
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