Experimental and numerical vertical bending moments of a bulk carrier and a roll-on/roll-off ship in extreme waves. (15th September 2016)

• Record Type: Journal Article
• Authors: Vásquez, Guillermo; Fonseca, Nuno; Guedes Soares, Carlos
• Is Part Of: Ocean engineering. Volume 124(2016)
• Page Start: 404
• Page End: 418
• Publication Date: 2016-09-15
• Subjects: Ship motions -- Extreme waves -- Nonlinear motions -- Bulk carrier -- Roll-on/roll-off -- Model tests; Ocean engineering -- Periodicals; Ocean engineering; Periodicals; 620.4162
• DOI: 10.1016/j.oceaneng.2016.07.032
• Languages: English
• ISSNs: 0029-8018

Abstract

Abstract: This paper investigates the experimental and numerical vertical bending moments induced by abnormal waves on two ships, namely, a bulk carrier and a Roll-on/Roll-off. The experimental data was obtained by seakeeping tests with scaled models in head waves at two Froude numbers. The wave traces were predefined and corresponding to wave records measured during storms in the North Sea. These wave records are particularly interesting because each of them includes one abnormal wave. The ship models, which are similar in length but different in their geometry, were tested in the same predefined wave conditions. The objective is to investigate the hull geometry influence on vertical bending moment under extreme sea conditions. Some conclusions are made by comparing directly the measured responses from the two models. The experimental data is also used as benchmark to validate the predictions by a partially nonlinear time domain seakeeping numerical model. The numerical model is then used to generalize the comparative analysis between the two ships. Highlights: The vertical bending moments induced by abnormal waves on a Bulk Carrier and Ro–Ro is studied. The data was obtained by seakeeping tests with scaled models in head waves at two Froude numbers. conclusions are taken by comparing directly the measured responses from the two models. experimental data is used to validate the predictions by a partially nonlinear time domain seakeeping model.