Modern offshore structure and ship design requires an understanding of responses in large seas. A nonlinear time-domain method may be used to perform computational analyses of these events. To be useful in preliminary design, the method must be computationally efficient and accurate. This paper presents a body-exact strip theory approach to compute wave-body interactions for large amplitude ship motions. The exact body boundary conditions and linearized free surface boundary conditions are used. At each time step, the body surface and free surface are regrided due to the changing wetted body geometry. Numerical and real hull forms are used in the computations. Validation and comparisons of hydrodynamic forces are presented. Selected results are shown illustrating the robustness and capabilities of the body-exact strip theory. Finally, an equation of motion solver is implemented to predict the motions of the vessel in a seaway.
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ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering
June 15–20, 2008
Estoril, Portugal
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4823-4
PROCEEDINGS PAPER
Nonlinear Ship Motions in the Time-Domain Using a Body-Exact Strip Theory
Piotr J. Bandyk,
Piotr J. Bandyk
University of Michigan, Ann Arbor, MI
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Robert F. Beck
Robert F. Beck
University of Michigan, Ann Arbor, MI
Search for other works by this author on:
Piotr J. Bandyk
University of Michigan, Ann Arbor, MI
Robert F. Beck
University of Michigan, Ann Arbor, MI
Paper No:
OMAE2008-57069, pp. 51-60; 10 pages
Published Online:
July 27, 2009
Citation
Bandyk, PJ, & Beck, RF. "Nonlinear Ship Motions in the Time-Domain Using a Body-Exact Strip Theory." Proceedings of the ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering. Volume 6: Nick Newman Symposium on Marine Hydrodynamics; Yoshida and Maeda Special Symposium on Ocean Space Utilization; Special Symposium on Offshore Renewable Energy. Estoril, Portugal. June 15–20, 2008. pp. 51-60. ASME. https://doi.org/10.1115/OMAE2008-57069
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