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First and Second Order Wave-Current Interactions for Floating Bodies

[+] Author Affiliations
Charles Monroy, Yann Giorgiutti, Xiao-Bo Chen

Bureau Veritas, Neuilly-sur-Seine, France

Paper No. OMAE2012-83409, pp. 373-382; 10 pages
doi:10.1115/OMAE2012-83409
From:
  • ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 1: Offshore Technology
  • Rio de Janeiro, Brazil, July 1–6, 2012
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-4488-5
  • Copyright © 2012 by ASME

abstract

The influence of current in sea-keeping problems is felt not only for first order quantities such as wave run-ups in front of the structure, but also mainly for second order quantities. In particular, the wave drift damping (which is expressed as the derivative of drift force with respect to the current) is of special interest for mooring systems. The interaction effects of a double-body steady flow on wave diffraction-radiation is studied through a decomposition of the time-harmonic potential into linear and interaction components. A boundary integral method is used to solve the first order problem. Ultimately, a far-field method is proposed to get access to second order drift forces.

Copyright © 2012 by ASME

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