TWO-DIMENSIONAL NUMERICAL MODELLING OF LARGE MOTIONS OF FLOATING BODIES IN WAVES

A numerical method is described that simulates in the time domain the propagation of steep two-dimensional periodic waves and the large motions induced by waves on free-floating bodies. The method allows for mild transient phenomena. The algorithm is based on Green's formula for harmonic functions applied in a finite control fluid domain, together with the fundamental solutions of Laplace's equation. A lowest order boundary element discretization is used. In addition to several numerical results, computations of the sway forces and the roll and heave motions induced by steep periodic waves on a floating body restrained in the sway mode are presented and compared with the results of specially conducted model tests. The comparisons confirm the validity of the numerical method and demonstrate that it can provide realistic estimates of roll motions within the specified range.

• Supplemental Notes:
  • Conference paper
• Authors:
  • Sen, D
  • Pawlowski, J
  • Lever, J
• Conference:
  • International Conference on Numerical Ship Hydrodynamics, 5th
  • Location: Hiroshima, Japan
  • Date: 1989-9-24 to 1989-9-28
• Publication Date: 0

Media Info

• Features: References;
• Pagination: 23p., incl. discuss.

Subject/Index Terms

• TRT Terms: Boundary element method; Floating structures; Green's function; Laplace transforms; Mathematical models; Motion; Water waves
• Uncontrolled Terms: Floating bodies; Numerical models
• Old TRIS Terms: Large amplitude
• Subject Areas: Bridges and other structures; Hydraulics and Hydrology; Marine Transportation;

Filing Info

• Accession Number: 00661086
• Record Type: Publication
• Source Agency: Maritime Technical Information Facility
• Files: TRIS
• Created Date: Jul 21 1994 12:00AM