Journal
JOURNAL OF MARINE SCIENCE AND ENGINEERING
Volume 8, Issue 5, Pages -Publisher
MDPI
DOI: 10.3390/jmse8050327
Keywords
ship motions; green water impact; computational fluid dynamics; volume of fluid method; RANS
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Funding
- Natural Science Foundation of Jiangsu Province [SBK2018040999]
- Major Basic Research Project of the Natural Science Foundation of the Jiangsu Higher Education Institutions [18KJB570001]
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A series of CFD RANS simulations are presented for Wigley hulls of two freeboard heights progressing with forward speed in waves. Free surface effects are captured using the Volume of Fluid (VOF) method embedded in open source software OpenFOAM. Comparisons of heave, pitch motions and added resistance of the first Wigley model against the experiments of Kashiwagi (2013) confirm the numerical validity of the hydrodynamic modelling approach. Further simulations for the lower-freeboard Wigley model reveal that the highest green water impact on decks appears in way of lambda/L = 1.3and at the highest instantaneous pitch amplitude where the water propagates far downstream and across the deck. The simulations also demonstrate that the green water events are associated with air bubble entrapment.
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