Academic Journal
Experimental study on vortex-induced motions of a semi-submersible with square columns and pontoons at different draft conditions and current incidences
| Title: | Experimental study on vortex-induced motions of a semi-submersible with square columns and pontoons at different draft conditions and current incidences |
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| Authors: | Mingyue Liu, Longfei Xiao, Haining Lu, Xiaolong Xiao |
| Source: | International Journal of Naval Architecture and Ocean Engineering, Vol 9, Iss 3, Pp 326-338 (2017) |
| Publisher Information: | Elsevier, 2017. |
| Publication Year: | 2017 |
| Collection: | LCC:Ocean engineering LCC:Naval architecture. Shipbuilding. Marine engineering |
| Subject Terms: | Vortex-induced motions, Semi-submersible, Current incidence, Aspect ratio, Model tests, Ocean engineering, TC1501-1800, Naval architecture. Shipbuilding. Marine engineering, VM1-989 |
| More Details: | The Vortex-induced Motions (VIM) phenomenon of semi-submersibles is relevant for the fatigue life of moorings and risers. Model tests regarding the VIM behavior of a semi-submersible with four square columns were conducted in order to investigate the effects of the current incidence and the aspect ratio of the immerged column. The experimental results show that the largest transverse amplitudes are around 70% of the column width at 30° and 45° incidences in a range of reduced velocities from 5 to 8 when the aspect ratio of the immerged column is 1.90. The largest yaw motion occurs at 0° incidence with the peak value around 4.5°. Similar characteristics of the VIM response are observed for the semi-submersible with aspect ratios of 1.90 and 1.73. When the aspect ratio decreases 50% to 0.87, 30% decrease in the peak transverse amplitudes can be seen. |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English |
| ISSN: | 2092-6782 |
| Relation: | http://www.sciencedirect.com/science/article/pii/S2092678216305003; https://doaj.org/toc/2092-6782 |
| DOI: | 10.1016/j.ijnaoe.2016.11.003 |
| Access URL: | https://doaj.org/article/55d74280e900436f8b770d597e8b834f |
| Accession Number: | edsdoj.55d74280e900436f8b770d597e8b834f |
| Database: | Directory of Open Access Journals |
| ISSN: | 20926782 |
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| DOI: | 10.1016/j.ijnaoe.2016.11.003 |
| Published in: | International Journal of Naval Architecture and Ocean Engineering |
| Language: | English |