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

Polish maritime research

Metin TaylanIstanbul Technical Universitys, TurkeyOther articles by this author:De Gruyter OnlineGoogle Scholar¹  Emre Pe?manKaradeniz Technical University, 61080, Trabzon, TurkeyOther articles by this author:De Gruyter OnlineGoogle Scholar²  Deniz Can Koluk?saKaradeniz Technical University, 61080, Trabzon, TurkeyOther articles by this author:De Gruyter OnlineGoogle Scholar² 

[1] Istanbul Technical Universitys, Turkey;Karadeniz Technical University, 61080, Trabzon, Turkey

关键词: Keywords: Parametric roll motion;    bifurcations;    panel method;    AQWA;   

DOI  :  10.1515/pomr-2015-0053

学科分类：工程和技术（综合）

来源: Politechnika Gdanska * Wydzial Oceanotechniki i Okretownictwa

【 摘 要 】

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.

【 授权许可】

Unknown