Nonlinear Surge Dynamics of a Ship in Astern Seas: “Continuation Analysis” of Periodic States with Hydrodynamic Memory
Authors: Spyrou, Kostas J.; Tigkas, Ioannis G.
Source: Journal of Ship Research, Volume 55, Number 1, March 2011 , pp. 19-28(10)
Abstract:Continuation analysis is performed for the coupled surge, heave, and pitch motions of a ship in steep following seas. The focus of the work is on the efficient elicitation of system dynamics related to the phenomena of nonlinear surging and surf-riding. Background material with several references can be found in Spyrou (1996a, 1996b, 1997, 2006). Main novel features of the current work are the inclusion of fluid memory effects within the framework of continuation analysis and the successful implementation of continuation for the periodic motions that correspond to the “overtaking waves” scenario. The entailed steps for realizing these goals are discussed in detail. Application is presented for a well-known ITTC ship.
Document Type: Research Article
Publication date: 2011-03-01
- The Journal of Ship Research is a quarterly publication providing highly technical papers on applied research in hydrodynamics, propulsion, ship motions, structures, and vibrations. While the Journal requires that papers present the results of research that advances ship and ocean science and engineering, most contributions bear directly on other disciplines, such as civil and mechanical engineering, applied mathematics, and numerical analysis. High quality papers are contributed from the U.S., Canada and overseas, with representation from established authorities as well as new researchers.
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