The effects of a collinear current on the diffraction of regular waves around a three-dimensional surface-piercing body are examined. With the current speed assumed to be small, the boundary-value problem is separated into a steady current problem with a rigid wall condition applied at the still water level and a wave propagation problem in the resulting current field. The boundary conditions of the wave propagation problem are satisfied by a time- stepping procedure and the field solution is obtained by an integral equation method. Free surface profiles, runup and wave forces are described for a vertical circular cylinder in combined waves and a current. The current is shown to significantly affect the steady drift force and runup predictions. Comparisons of the computed wave forces are made with a previous numerical solution involving a semi- immersed sphere in deep water, and indicate good agreement.

  • Supplemental Notes:
    • OMAE 1995, 14th Intl Conf on Offshore Mechanics & Arctic Engng; 18-22 June 1995; Copenhagen, Denmark. Sponsored by ASME et al. Procs. Publ by ASME, ISBN 0-7918-1306-1. Vol I, Pt A, p 395 [8 p, 15 ref 9 fig]
  • Authors:
    • Cheung, K F
    • Lee, J W
    • Isaacson, M
  • Publication Date: 1995


  • English

Subject/Index Terms

Filing Info

  • Accession Number: 00718288
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Mar 27 1996 12:00AM