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Parametric rolling in regular head waves of the Kriso container ship: numerical and experimental investigation in shallow water Tello Ruiz, M.; Villagómez, J.; Delefortrie, G.; Lataire, E. (2019). Parametric rolling in regular head waves of the Kriso container ship: numerical and experimental investigation in shallow water, in: ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering - Volume 7A: Ocean Engineering, June 9–14, 2019 Glasgow, Scotland, UK. pp. [1-9]. https://dx.doi.org/10.1115/OMAE2019-96341 In: (2019). ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering - Volume 7A: Ocean Engineering, June 9–14, 2019 Glasgow, Scotland, UK. ASME: Glasgow. ISBN 978-0-7918-5884-4.

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Beschikbaar in	Auteurs
Waterbouwkundig Laboratorium: Non-open access 335811 [ aanvragen ] VLIZ [ aanvragen ]
Documenttype: Congresbijdrage

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Author keywords

Parametric rolling; Shallow water

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Auteurs		Top
Tello Ruiz, M. Villagómez, J., meer Delefortrie, G. Lataire, E.

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Abstract

The IMO Intact Stability Code considers the parametric rolling phenomenon as one of the stability failure modes because of the larger roll angles attained. This hazardous condition of roll resonance can lead to loss of cargo, passenger discomfort, and even (in the extreme cases) the ship’s capsize. Studies as such are mostly conducted considering wave characteristics corresponding to wave lengths around one ship length (ƛ ≈Lpp) and wave amplitudes varying from moderate to rough values. These wave characteristics, recognised as main contributors to parametric rolling, are frequently encountered in deep water. Waves with lengths of such magnitudes are also met by modern container ships in areas in close proximity to ports, but with less significant wave amplitudes. In such areas, due to the limited water depth and the relatively large draft of the ships, shallow water effects influence the overall ship behaviour as well. Studies dedicated to parametric rolling occurrence in shallow water are scarce in literature. In spite of no accidents being yet reported in such scenarios, its occurrence and methods for its prediction require further attention; this in order to prevent any hazardous conditions. The present work investigates the parametric roll phenomenon numerically and experimentally in shallow water. The study is carried out with the KRISO container ship (KCS) hull. The numerical investigation uses methods available in literature to study the susceptibility and severity of parametric rolling. Their applicability to investigate this phenomenon in shallow water is also discussed. The experimental analysis was carried out at the Towing Tank for Manoeuvres in Confined Water at Flanders Hydraulics Research (in co-operation with Ghent University). Model tests comprised a variation of different forward speeds, wave amplitudes and wave lengths (around one Lpp). The water depth was fixed to a condition equivalent to a gross under keel clearance (UKC) of 100% of the ship’s draft.

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