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Abstract

This study investigates lateral restriction effects on squat based on a novel approach to calculate blockage which is the concept of “normalised equivalent blockage ratio”,m eq-norm . The Computational Fluid Dynamics (CFD) based study undertaken investigates the change in midship sinkage and trim of the KRISO container ship (KCS) in laterally restricted channels with varying channel widths and bank heights at different ship speeds and water depths. The CFD model has been validated against experimental data. Results demonstrate that the midship sinkage increases linearly with respect to meq-norm where the gradient depends on speed and water depth. However, trim remains relatively constant with respect to meq-norm throughout the cases tested. More importantly, it is shown that channels with different widths and bank heights, yet similar meq-norm, will result in similar midship sinkage and trim. Therefore, the meq-norm is a versatile and accurate approach to quantify the blockage of a channel and is suitable for implementation into real-time ship-handling simulator

Item Type:	Conference or Workshop Item (Paper)
Authors/Creators:	Kok, Z and Duffy, J and Chai, S and Jin, Y
Keywords:	Container ship, squat, CFD, lateral restriction
Journal or Publication Title:	Proceedings of the 6th MASHCON
Publisher:	Ghent University and Flanders Hydraulics Research
Copyright Information:	Copyright unknown
Related URLs:	Google Scholar: Duffy, J UTAS Profile: Duffy, J Google Scholar: Chai, S UTAS Profile: Chai, S
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