ON A HYDRO-ELASTIC PROBLEM IN OFFSHORE STRUCTURES: THE FORCES ON AN OSCILLATING CYLINDER REVISITED

The dynamic response of jack-ups, tension leg platforms and compliant towers is significantly influenced by the amount of damping. Considerable uncertainty exists about the damping arising from the interaction of the structural members of the structure with the surrounding fluid. After a concise introduction to the hydro-elastic problem, the paper describes some carefully designed experiments to determine the in-line forces on an oscillating cylinder of 0.4m diameter (beta=2.9 104-1.5 105) for KC in the range from 1 to 14. The results are presented in terms of drag and inertia coefficients. The drag coefficients are significantly lower than reported before.

  • Supplemental Notes:
    • ISOPE 91, 1st Intnl Offshore & Polar Engng Conference; 11-16 Aug 1991; Edinburgh, U.K. Sponsored by Intl Soc Offshore & Polar Engrs (ISOPE) et al. Procs. Publ by ISOPE, ISBN 0-9626104-61. Vol III, p 172 [6 p, 13 ref, 1 tab, 8 fig]
  • Authors:
    • Otter, A
  • Publication Date: 1991

Language

  • English

Subject/Index Terms

Filing Info

  • Accession Number: 00716249
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Feb 28 1996 12:00AM