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Publications
Fonseca, N. and Guedes Soares, C. (2011), “Development of a methodology for parametric rolling prediction”, Maritime Engineering and Technology, Guedes Soares et al. (Eds),Taylor & Francis Group, London, pp. 601-620
Parametric rolling of different types of ships has been considered a serious problem, to the extent that its consequences warrant development of design procedures or decision support tools to prevent its occurrence. This paper first focuses on explaining parametric rolling with the emphasis on the physics that governs such phenomenon of dynamic instability in waves. In second place, the various approaches adopted by the authors over the last years to predict this particular problem, including hydrodynamic models of increasing sophistication with 1, 3, 5 and 6 Degrees of Freedom (DoF) are reviewed. Finally, scaled model experiments are referred in the case of with two containerships and one fishing vessel which proved to be particularly prone to parametric rolling in longitudinal waves, and presents some comparisons are presented for those ships with a time-domain, non-linear strip theory model of ship’s motions in 6 DoF.
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