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Numerical and Analytical Approaches for Roll Motion Analysis in Regular Longitudinal Waves Cover

Numerical and Analytical Approaches for Roll Motion Analysis in Regular Longitudinal Waves

Open Access
|Oct 2015

Abstract

In this study numerical and analytical approaches were investigated in terms of accuracy of their results, practicality of solution and ability to reproduce the main features of the parametric roll phenomenon such as loss of stability and bifurcations in parametric roll motion analysis of ships. In general, single-degree-of-freedom analytical approach is based on reducing number of degrees of freedom from 3 to 1 by using the quasi-static Froude-Krylov assumption, incorporating heave and pitch effects by means of a time varying restoring moment. On the other hand, numerical approaches to motion of six and four degrees of freedom are based on three dimensional diffraction/radiation and potential flow theories. In summary, this paper reveals that analytical approaches are sufficiently adequate to obtain accurate practical results for this relatively complex phenomenon.

DOI: https://doi.org/10.1515/pomr-2015-0053 | Journal eISSN: 2083-7429 | Journal ISSN: 1233-2585
Language: English
Page range: 28 - 35
Published on: Oct 15, 2015
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2015 Emre Peşman, Deniz Can Kolukısa, Metin Taylan, published by Gdansk University of Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.