This report examines the force components on submerged pipelines at depths which are in the zone of water wave influence. The force is comprised of a periodic force composed of a drag force and an inertial force and of a non-periodic 2nd order force acting upward. Although the magnitude of the wave force on a circular cylinder is independent of the angle of inclination of the cylinder axis with the horizontal, the time phase at which the maximum force occurs relative to the wave crest is shown to change linearly with this angle of inclination. Drag and mass coefficients were evaluated for selected wave and depth conditions. The coefficients varied with wave height, wave length, and depth of the cylinder below the undisturbed water level.

  • Supplemental Notes:
    • Research was sponsored by Army Coastal Engineering Research Center.
  • Corporate Authors:

    University of California, Berkeley

    Hydraulic Engineering Laboratory
    Berkeley, CA  United States 
  • Authors:
    • Al-Kazily, M F
  • Publication Date: 1972-10

Media Info

  • Pagination: 203 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00050942
  • Record Type: Publication
  • Source Agency: National Maritime Research Center, Galveston
  • Report/Paper Numbers: # HEL 9-21 Tech Rpt
  • Contract Numbers: DACW 72-69-C-0001
  • Files: TRIS
  • Created Date: Feb 15 1974 12:00AM