Effects of Strake Coverage and Marine Growth on Flexible Cylinder VIV
In this paper we present some results from the recent SHELL tests at the MARINTEK basin. The tests involved towing densely instrumented flexible cylinders at Reynolds numbers up to 220,000. The main objective is to present the experimental results describing the effectiveness of different amounts of...
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| Format: | Article |
| Language: | en_US |
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American Society of Mechanical Engineers
2017
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| Online Access: | http://hdl.handle.net/1721.1/109276 https://orcid.org/0000-0002-5664-103X https://orcid.org/0000-0002-6144-660X |
| _version_ | 1826196635903852544 |
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| author | Resvanis, Themistocles L Rao, Zhibiao Vandiver, John Kim |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Resvanis, Themistocles L Rao, Zhibiao Vandiver, John Kim |
| author_sort | Resvanis, Themistocles L |
| collection | MIT |
| description | In this paper we present some results from the recent SHELL tests at the MARINTEK basin. The tests involved towing densely instrumented flexible cylinders at Reynolds numbers up to 220,000. The main objective is to present the experimental results describing the effectiveness of different amounts of strake coverage and to explore the influence of simulated marine growth. The data is presented in terms of CF response amplitudes and rainflow-counted damage rates due to the combined CF and IL bending stresses. All results are compared with the bare cylinder cases which will be used as a reference to determine how effective the strakes are in suppressing VIV and how this effectiveness can be affected by marine growth. The results show that even small bare sections (missing strakes) can lead to significant VIV response. We also observe that moderate amounts of marine growth can quickly negate any suppression coming from the strakes. |
| first_indexed | 2024-09-23T10:30:53Z |
| format | Article |
| id | mit-1721.1/109276 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:30:53Z |
| publishDate | 2017 |
| publisher | American Society of Mechanical Engineers |
| record_format | dspace |
| spelling | mit-1721.1/1092762022-09-30T21:36:44Z Effects of Strake Coverage and Marine Growth on Flexible Cylinder VIV Resvanis, Themistocles L Rao, Zhibiao Vandiver, John Kim Massachusetts Institute of Technology. Department of Mechanical Engineering Resvanis, Themistocles L Rao, Zhibiao Vandiver, John Kim In this paper we present some results from the recent SHELL tests at the MARINTEK basin. The tests involved towing densely instrumented flexible cylinders at Reynolds numbers up to 220,000. The main objective is to present the experimental results describing the effectiveness of different amounts of strake coverage and to explore the influence of simulated marine growth. The data is presented in terms of CF response amplitudes and rainflow-counted damage rates due to the combined CF and IL bending stresses. All results are compared with the bare cylinder cases which will be used as a reference to determine how effective the strakes are in suppressing VIV and how this effectiveness can be affected by marine growth. The results show that even small bare sections (missing strakes) can lead to significant VIV response. We also observe that moderate amounts of marine growth can quickly negate any suppression coming from the strakes. SHEAR7 JIP 2017-05-23T11:48:24Z 2017-05-23T11:48:24Z 2014-06 Article http://purl.org/eprint/type/ConferencePaper 978-0-7918-4540-0 http://hdl.handle.net/1721.1/109276 Resvanis, Themistocles L., Zhibiao Rao, and J. Kim Vandiver. “Effects of Strake Coverage and Marine Growth on Flexible Cylinder VIV.” Volume 2: CFD and VIV (June 8, 2014). https://orcid.org/0000-0002-5664-103X https://orcid.org/0000-0002-6144-660X en_US http://dx.doi.org/110.1115/OMAE2014-24462 Volume 2: CFD and VIV Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Society of Mechanical Engineers American Society of Mechanical Engineers (ASME) |
| spellingShingle | Resvanis, Themistocles L Rao, Zhibiao Vandiver, John Kim Effects of Strake Coverage and Marine Growth on Flexible Cylinder VIV |
| title | Effects of Strake Coverage and Marine Growth on Flexible Cylinder VIV |
| title_full | Effects of Strake Coverage and Marine Growth on Flexible Cylinder VIV |
| title_fullStr | Effects of Strake Coverage and Marine Growth on Flexible Cylinder VIV |
| title_full_unstemmed | Effects of Strake Coverage and Marine Growth on Flexible Cylinder VIV |
| title_short | Effects of Strake Coverage and Marine Growth on Flexible Cylinder VIV |
| title_sort | effects of strake coverage and marine growth on flexible cylinder viv |
| url | http://hdl.handle.net/1721.1/109276 https://orcid.org/0000-0002-5664-103X https://orcid.org/0000-0002-6144-660X |
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