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

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...

Full description

Saved in:
Bibliographic Details
Published inPolish maritime research Vol. 22; no. 3; pp. 28 - 35
Main Authors Peşman, Emre, Kolukısa, Deniz Can, Taylan, Metin
Format Journal Article
LanguageEnglish
Published De Gruyter Open 01.09.2015
Sciendo
Subjects
AQWA
bifurcations
panel method
Parametric roll motion
Online AccessGet full text

Cover

More Information
Summary: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.
ISSN:2083-7429
2083-7429
DOI:10.1515/pomr-2015-0053