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On Approximations of the Wave Drift Forces Acting on Semi-Submersible Platforms With Heave Plates

[+] Author Affiliations
Bernard Molin

Aix Marseille Université, CNRS, Marseille Cedex, France

Jean-Baptiste Lacaze

ADWEN, Tour AREVA, Paris La Défense Cedex, France

Paper No. OMAE2016-54166, pp. V001T01A042; 7 pages
doi:10.1115/OMAE2016-54166
From:
  • ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 1: Offshore Technology; Offshore Geotechnics
  • Busan, South Korea, June 19–24, 2016
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-4992-7
  • Copyright © 2016 by ASME

abstract

The horizontal wave drift force acting on a vertical floating column, without then with a heave plate, is considered. Computations are performed with a diffraction-radiation code and through the Morison and Rainey equations. Focus is on wave frequencies around the heave resonance where the drift force may be significant, even though the scattered wave-field being weak. It is found that the Morison equation overpredicts the drift force while Rainey equations perform rather well.

Copyright © 2016 by ASME

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