A DIRECT BOUNDARY-ELEMENT METHOD FOR THREE-D WAVE DIFFRACTION AND RADIATION PROBLEMS

Fluid loading on ships and large structures has come to be a topic of great interest. The designer must assess with considerable certainty the loads that would be induced by extreme waves and by the motion of the structure. This article presents a three- dimensional analytic procedure for determining these hydrodynamic forces for fixed and floating structures in a fluid of finite or infinite depth. The fluid potential is expressed by a Helmholtz integral involving the normal fluid velocities at the fluid/structure interface. By discretizing the integral equation using constant or linear elements and by enforcing the velocity continuity condition at the discrete points of the interface, the fluid potential can be determined. The direct boundary-element method is used to develop a computer program for calculating the hydrodynamic forces induced by waves and by structure motions. The effects of structural flexibility are not considered. The results agree well with those obtained by previous investigators.

  • Availability:
  • Supplemental Notes:
    • Journal article
  • Authors:
    • Lee, C K
    • Lou, J Y
  • Publication Date: 1988

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Filing Info

  • Accession Number: 00656575
  • Record Type: Publication
  • Source Agency: Maritime Technical Information Facility
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM