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Experimental Study on Vortex-Induced Motions (VIM) of a Large-Volume Semi-Submersible Platform

[+] Author Affiliations
Rodolfo T. Gonçalves, Guilherme F. Rosetti, André L. C. Fujarra, Kazuo Nishimoto

University of São Paulo, São Paulo, SP, Brazil

Allan C. Oliveira

Petrobras, Rio de Janeiro, RJ, Brazil

Paper No. OMAE2011-49010, pp. 1-9; 9 pages
  • 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
  • ISBN: 978-0-7918-4439-7
  • Copyright © 2011 by ASME


A great deal of work has been developed on the spar and monocolumn vortex-induced motion (VIM) issue. However, there are very few published works concerning VIM of semi-submersible platforms, partly due to the fact that VIM studies for this type of platform recently became interesting particularly due to the increasing semi-submersible dimensions (columns diameter and height. In this context, a meticulous experimental study on VIM for this type of platform concept is presented here. Model test experiments were performed to check the influence of many factors on VIM, such as different headings and hull appendages. The results comply with in-line, cross-flow and yaw motion amplitudes, as well as with combined motions in the XY plane.

Copyright © 2011 by ASME



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