0
RESEARCH PAPERS: Offshore Mechanics

Computation of Slowly Varying Second-Order Hydrodynamic Forces on Floating Structures in Irregular Waves

[+] Author and Article Information
T. Matsui

Department of Architecture, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Japan

J. Offshore Mech. Arct. Eng 111(3), 223-232 (Aug 01, 1989) (10 pages) doi:10.1115/1.3257151 History: Received January 01, 1987; Revised October 07, 1988; Online October 30, 2009

Abstract

An exact second-order formulation is presented for computing the slowly varying second-order hydrodynamic forces on floating structures in irregular waves. The near-field approach based on direct integration of the fluid pressure on the submerged body surface is employed in conjunction with numerical first-order solutions by means of the hybrid finite element technique. Green’s second identity is exploited to evaluate the second-order forces due to the second-order velocity potential. Numerical results are presented for the slow drift excitation forces on an articulated column and a semi-submersible platform. It is shown that the contribution from the second-order velocity potential is more significant to the roll moment than to the sway and heave forces on the semi-submersible.

Copyright © 1989 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In