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Quantifying ship’s dynamic stability through numerical investigation of weight distribution

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Enshaei, H ORCID: 0000-0002-5649-7015 and Kianejad, SS 2018 , 'Quantifying ship’s dynamic stability through numerical investigation of weight distribution', paper presented at the 13th International Conference on the Stability of Ships and Ocean Vehicles (STAB 2018), 16-21 September 2018, Kobe, Japan.

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Abstract

The Roll resonance can occur both in the parametric roll and dead ship condition, where the roll angle increases and endangers safety of the ship. The effects of loading conditions and weight distributions on the aforementioned phenomena are unknown. This study uses CFD method to investigate the effects of loading conditions, different vertical centre of gravity (VCG) and roll moment of inertia on dynamic stability. A model of a container ship is excited by a roll exciting moment at different frequencies and Froude numbers. The effects of VCG and loading conditions on the dynamic stability are compared against hydrostatic characteristics for the similar conditions. It was found, their effects in the static condition are more significant than the dynamic condition.

Item Type: Conference or Workshop Item (Paper)
Authors/Creators:Enshaei, H and Kianejad, SS
Keywords: weight distribution, VCG, restoring moment, damping moment, moment of inertia, CFD, harmonic excited roll motion
Journal or Publication Title: Proceedings of the 13th International Conference on the Stability of Ships and Ocean Vehicles (STAB 2018)
Publisher: STAB 2018
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