Prediction of Parametric Rolling in Irregular Head Waves

Hashimoto, Hirotada; Umeda, Naoya

doi:10.1007/978-3-030-00516-0_16

Cited by 4 publications

(2 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is a two parameter spectrum, with parameters of significant wave height and mean frequency. The number of components of the elementary wave was 200 at unequally divided wave frequencies, to avoid the self-repeating effect, e.g., Hashimoto and Umeda (2019) [20]. The cosine fourth power was used for the directional distribution of short-crested irregular waves.…”

Section: Experimental Systemmentioning

confidence: 99%

Manoeuvrability of a Large Cruise Ship after Damage for Safe Return to Port

Yuura

Hashimoto

Matsuda

2020

JMSE

Self Cite

View full text Add to dashboard Cite

Free-running model tests were conducted using a scaled model of a large cruise ship with a damaged compartment, to investigate the effects of damage opening and floodwater on the manoeuvring performance in calm water and regular and irregular head waves. Drifting tests in regular beam waves were also performed. The experimental results indicated that the course-keeping ability in waves and turning ability became worse in the damaged condition. However, the target ship retained its manoeuvrability for safe return to the port, on its own, even in a damaged state. As it is time- and cost-consuming to conduct a free-running model experiment, a captive model test was also carried out to develop a system-based simulation model for evaluating the manoeuvrability of large cruise ships after damage.

show abstract

Section: Experimental Systemmentioning

confidence: 99%

Manoeuvrability of a Large Cruise Ship after Damage for Safe Return to Port

Yuura

Hashimoto

Matsuda

2020

JMSE

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, except for Bu et al 5 (that attempts modeling the damaged ship dynamics in irregular wave using a quasistatic approach), they are mainly applied and validated for still water or for regular wave cases. The most accurate ship dynamic models in irregular waves are based on the so-called blended or hybrid non-linear numerical model [11][12][13] based on an extension of the potential flow theory. However, due to the complexity of the modeled phenomena, regarding ship motions in rough seas, they are intended for intact hull problems.…”

Section: Introductionmentioning

confidence: 99%

A comprehensive description and application of the FloodW simulation code for flooded ship problems: From still water to irregular wave scenarios

Acanfora,

Altosole,

Coppola

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part M:

View full text Add to dashboard Cite

This paper provides a compendium of the numerical model that goes under the name of FloodW. This code is a fast tool for the simulation and the analysis of the effects of flooding water on ship dynamics and loads in time domain, developed for safety purposes. It has been recently involved in the international benchmark study on simulation of flooding and motions of damaged Ropax vessels within the EU Horizon 2020 project FLARE, where the name FloodW was given for the first time. Indeed, the development of the code started almost 10 years ago for still water applications, limited to ship motions, up to flooding simulation in regular waves with the possibility to study also non-linear hull girder loads. The core feature of the flooding water modeling is in the assumption of a free surface normal to the apparent gravity vector, which is evaluated accounting for ship and water dynamics. Although this approach, from validations with experimental data, was found accurate in the whole range of filling levels of the damaged compartment, with finer accuracy for intermediate fillings, an alternative method was also proposed and implemented, pertinent to low filling levels. Therefore, this paper provides a comprehensive description of the FloodW code together with its applications, including also the recent developments in participating to the benchmark FLARE, regarding ship flooding in irregular wave scenario.

show abstract