Numerical study of an oscillating smaller cylinder in the wake of an upstream larger cylinder
A numerical study of flow around two tandem cylinders with unequal diameters was carried out. The upstream larger cylinder was fixed and the downstream smaller cylinder was allowed to oscillate in the transverse direction only. Comparisons of the experimental and numerical results were made to inves...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/96122 http://hdl.handle.net/10220/17065 |
| _version_ | 1824456731357347840 |
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| author | Gao, Yangyang Yu, Dingyong Wang, Xikun Tan, Soon Keat |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Gao, Yangyang Yu, Dingyong Wang, Xikun Tan, Soon Keat |
| author_sort | Gao, Yangyang |
| collection | NTU |
| description | A numerical study of flow around two tandem cylinders with unequal diameters was carried out. The upstream larger cylinder was fixed and the downstream smaller cylinder was allowed to oscillate in the transverse direction only. Comparisons of the experimental and numerical results were made to investigate the effects of the gap ratio on the maximum vibration amplitude and vortex shedding frequency. The results showed that the vibration response of the smaller cylinder was significantly affected by the presence of the upstream larger cylinder, and resulted in greatly reduced vibration amplitudes. With an increasing gap ratio, the vibration amplitude increased. However, the magnitude was lower than that corresponding to a single cylinder (with the same diameter as that of the downstream smaller cylinder) under the same flow conditions. |
| first_indexed | 2025-02-19T03:58:46Z |
| format | Journal Article |
| id | ntu-10356/96122 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:58:46Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/961222020-03-07T11:43:36Z Numerical study of an oscillating smaller cylinder in the wake of an upstream larger cylinder Gao, Yangyang Yu, Dingyong Wang, Xikun Tan, Soon Keat School of Civil and Environmental Engineering Maritime Research Centre Nanyang Environment and Water Research Institute DRNTU::Engineering::Maritime studies::Maritime science and technology A numerical study of flow around two tandem cylinders with unequal diameters was carried out. The upstream larger cylinder was fixed and the downstream smaller cylinder was allowed to oscillate in the transverse direction only. Comparisons of the experimental and numerical results were made to investigate the effects of the gap ratio on the maximum vibration amplitude and vortex shedding frequency. The results showed that the vibration response of the smaller cylinder was significantly affected by the presence of the upstream larger cylinder, and resulted in greatly reduced vibration amplitudes. With an increasing gap ratio, the vibration amplitude increased. However, the magnitude was lower than that corresponding to a single cylinder (with the same diameter as that of the downstream smaller cylinder) under the same flow conditions. 2013-10-30T05:28:42Z 2019-12-06T19:26:06Z 2013-10-30T05:28:42Z 2019-12-06T19:26:06Z 2012 2012 Journal Article Gao, Y., Yu, D., Wang, X., & Tan, S. K. (2012). Numerical study of an oscillating smaller cylinder in the wake of an upstream larger cylinder. Journal of ocean university of China, 11(2), 111-117. https://hdl.handle.net/10356/96122 http://hdl.handle.net/10220/17065 10.1007/s11802-012-1859-0 en Journal of ocean university of China |
| spellingShingle | DRNTU::Engineering::Maritime studies::Maritime science and technology Gao, Yangyang Yu, Dingyong Wang, Xikun Tan, Soon Keat Numerical study of an oscillating smaller cylinder in the wake of an upstream larger cylinder |
| title | Numerical study of an oscillating smaller cylinder in the wake of an upstream larger cylinder |
| title_full | Numerical study of an oscillating smaller cylinder in the wake of an upstream larger cylinder |
| title_fullStr | Numerical study of an oscillating smaller cylinder in the wake of an upstream larger cylinder |
| title_full_unstemmed | Numerical study of an oscillating smaller cylinder in the wake of an upstream larger cylinder |
| title_short | Numerical study of an oscillating smaller cylinder in the wake of an upstream larger cylinder |
| title_sort | numerical study of an oscillating smaller cylinder in the wake of an upstream larger cylinder |
| topic | DRNTU::Engineering::Maritime studies::Maritime science and technology |
| url | https://hdl.handle.net/10356/96122 http://hdl.handle.net/10220/17065 |
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