Effects of Strake Coverage and Marine Growth on Flexible Cylinder Vortex-Induced Vibrations
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Effects of strake coverage.pdf
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2.69 MB
Format
Adobe PDF
Checksum (MD5)
798ed9c3ac49533e5267578b0b49ea0a
Author(s)
Resvanis, Themistocles L
Rao, Zhibiao
Vandiver, John Kim
Date Issued
June 2016
Journal
Journal of Offshore Mechanics and Arctic Engineering
Publisher
ASME International
Citation
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.
Version
Final published version
Abstract
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.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
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.
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DOI of Published Version
https://doi.org/10.1115/1.4033821
