Experiments have been carried out on a free-to-rotate short-tail fairing fitted to a rigid length of circular cylinder to investigate the effect of rotational friction on the stability of this type of VIV suppressor. Measurements of the dynamic response are presented for models with low mass and damping which are free to respond in the cross-flow and streamwise directions. It is shown how VIV can be reduced if the fairing presents a rotational friction above a critical limit. In this configuration the fairing finds a stable position deflected from the flow direction and a steady lift force appears towards the side the fairing has deflected. The fluid-dynamic mechanism is very similar to that observed for a free-to-rotate splitter plate of equivalent length.
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ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering
June 19–24, 2011
Rotterdam, The Netherlands
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4439-7
PROCEEDINGS PAPER
The Effect of Rotational Friction on the Stability of Short-Tailed Fairings Suppressing Vortex-Induced Vibrations
Gustavo R. S. Assi,
Gustavo R. S. Assi
University of Sa˜o Paulo, Sa˜o Paulo, Brazil
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Peter W. Bearman,
Peter W. Bearman
Imperial College London, London, UK
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Michael A. Tognarelli,
Michael A. Tognarelli
BP America Production Company, Houston, TX
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Julia R. H. Rodrigues
Julia R. H. Rodrigues
University of Sa˜o Paulo, Sa˜o Paulo, Brazil
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Gustavo R. S. Assi
University of Sa˜o Paulo, Sa˜o Paulo, Brazil
Peter W. Bearman
Imperial College London, London, UK
Michael A. Tognarelli
BP America Production Company, Houston, TX
Julia R. H. Rodrigues
University of Sa˜o Paulo, Sa˜o Paulo, Brazil
Paper No:
OMAE2011-49522, pp. 389-394; 6 pages
Published Online:
October 31, 2011
Citation
Assi, GRS, Bearman, PW, Tognarelli, MA, & Rodrigues, JRH. "The Effect of Rotational Friction on the Stability of Short-Tailed Fairings Suppressing Vortex-Induced Vibrations." Proceedings of the ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. Volume 7: CFD and VIV; Offshore Geotechnics. Rotterdam, The Netherlands. June 19–24, 2011. pp. 389-394. ASME. https://doi.org/10.1115/OMAE2011-49522
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