Effects of Strake Coverage and Marine Growth on Flexible Cylinder Vortex-Induced Vibrations
This paper presents 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 stra...
Published in: | Journal of Offshore Mechanics and Arctic Engineering |
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ftmit:oai:dspace.mit.edu:1721.1/109247 2023-06-11T04:07:29+02:00 Effects of Strake Coverage and Marine Growth on Flexible Cylinder Vortex-Induced Vibrations Resvanis, Themistocles L Rao, Zhibiao Vandiver, John Kim Massachusetts Institute of Technology. Department of Mechanical Engineering Resvanis, Themistocles L Rao, Zhibiao Vandiver, John Kim 2016-05 application/pdf http://hdl.handle.net/1721.1/109247 en_US eng ASME International http://dx.doi.org/10.1115/1.4033821 Journal of Offshore Mechanics and Arctic Engineering 0892-7219 http://hdl.handle.net/1721.1/109247 Resvanis, Themistocles L., Zhibiao Rao, and J. Kim Vandiver. “Effects of Strake Coverage and Marine Growth on Flexible Cylinder Vortex-Induced Vibrations 1.” Journal of Offshore Mechanics and Arctic Engineering 138, no. 5 (June 27, 2016): 051801. orcid:0000-0002-5664-103X orcid:0000-0002-6144-660X 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. American Society of Mechanical Engineers (ASME) Article http://purl.org/eprint/type/ConferencePaper 2016 ftmit https://doi.org/10.1115/1.4033821 2023-05-29T07:30:37Z This paper presents 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 are presented in terms of cross-flow (CF) response amplitudes and rainflow-counted damage rates due to the combined CF and in-line (IL) bending stresses. All the results are compared with the bare cylinder cases which will be used as a reference to determine how effective the strakes are in suppressing vortex-induced vibrations (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. Finally, the tests revealed that even moderate amounts of marine growth can quickly negate any suppression coming from the strakes. SHEAR7 JIP Article in Journal/Newspaper Arctic DSpace@MIT (Massachusetts Institute of Technology) Journal of Offshore Mechanics and Arctic Engineering 138 5 |
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Open Polar |
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DSpace@MIT (Massachusetts Institute of Technology) |
op_collection_id |
ftmit |
language |
English |
description |
This paper presents 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 are presented in terms of cross-flow (CF) response amplitudes and rainflow-counted damage rates due to the combined CF and in-line (IL) bending stresses. All the results are compared with the bare cylinder cases which will be used as a reference to determine how effective the strakes are in suppressing vortex-induced vibrations (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. Finally, the tests revealed that even moderate amounts of marine growth can quickly negate any suppression coming from the strakes. SHEAR7 JIP |
author2 |
Massachusetts Institute of Technology. Department of Mechanical Engineering Resvanis, Themistocles L Rao, Zhibiao Vandiver, John Kim |
format |
Article in Journal/Newspaper |
author |
Resvanis, Themistocles L Rao, Zhibiao Vandiver, John Kim |
spellingShingle |
Resvanis, Themistocles L Rao, Zhibiao Vandiver, John Kim Effects of Strake Coverage and Marine Growth on Flexible Cylinder Vortex-Induced Vibrations |
author_facet |
Resvanis, Themistocles L Rao, Zhibiao Vandiver, John Kim |
author_sort |
Resvanis, Themistocles L |
title |
Effects of Strake Coverage and Marine Growth on Flexible Cylinder Vortex-Induced Vibrations |
title_short |
Effects of Strake Coverage and Marine Growth on Flexible Cylinder Vortex-Induced Vibrations |
title_full |
Effects of Strake Coverage and Marine Growth on Flexible Cylinder Vortex-Induced Vibrations |
title_fullStr |
Effects of Strake Coverage and Marine Growth on Flexible Cylinder Vortex-Induced Vibrations |
title_full_unstemmed |
Effects of Strake Coverage and Marine Growth on Flexible Cylinder Vortex-Induced Vibrations |
title_sort |
effects of strake coverage and marine growth on flexible cylinder vortex-induced vibrations |
publisher |
ASME International |
publishDate |
2016 |
url |
http://hdl.handle.net/1721.1/109247 |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
American Society of Mechanical Engineers (ASME) |
op_relation |
http://dx.doi.org/10.1115/1.4033821 Journal of Offshore Mechanics and Arctic Engineering 0892-7219 http://hdl.handle.net/1721.1/109247 Resvanis, Themistocles L., Zhibiao Rao, and J. Kim Vandiver. “Effects of Strake Coverage and Marine Growth on Flexible Cylinder Vortex-Induced Vibrations 1.” Journal of Offshore Mechanics and Arctic Engineering 138, no. 5 (June 27, 2016): 051801. orcid:0000-0002-5664-103X orcid:0000-0002-6144-660X |
op_rights |
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. |
op_doi |
https://doi.org/10.1115/1.4033821 |
container_title |
Journal of Offshore Mechanics and Arctic Engineering |
container_volume |
138 |
container_issue |
5 |
_version_ |
1768380636028993536 |