THREE DIMENSIONAL EFFECTS ON THE HYDRODYNAMIC COEFFICIENTS AND WAVE EXCITING FORCES USED IN PREDICTING MOTIONS OF SHIPS

The three-dimensional boundary value problem for the unsteady motion of a ship oscillating on the free surface is formulated for zero forward speed. Various forms of the integral equation methods are formulated. The three-dimensional source distribution method is developed to compute the added mass and damping coefficient and the wave exciting forces on a ship. Comparison of the results of strip theory with those of 3-D theory shows that for the low and extremely high frequencies of oscillation, strip theory gives a poor result when computing the added mass, but that strip theory is a good approximation for fairly high frequency. The 3-D theory shows that greater forces occur nearer the bow than the stern for the head sea and decrease as the wave passes along the ship.

  • Supplemental Notes:
    • Report
  • Corporate Authors:

    University of Michigan, Ann Arbor

    Department of Naval Architects and Marine Engineers
    Ann Arbor, MI  United States  48109
  • Authors:
    • Shin, Y
  • Publication Date: 1979-3

Media Info

  • Features: References;
  • Pagination: 129 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00660784
  • Record Type: Publication
  • Source Agency: Maritime Technical Information Facility
  • Report/Paper Numbers: R-210
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM