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Xiu Li

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Proceedings Article | 1 March 2023 Paper

Analysis on deck waves of general-purpose FPSO under extreme sea conditions

Shifa Zhao, Peilin Dou, Hongtao Yuan, Yue Qi, Xiu Li

Proceedings Volume 12596, 125960J (2023) https://doi.org/10.1117/12.2672262

KEYWORDS: 3D modeling, Liquids, Data modeling, Water, Design and modelling, Numerical simulations, Computer simulations, Clouds, Motion analysis, Risk assessment

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The general purpose FPSO may encounter captain misjudgment, mooring system failure, direct alignment with the direction of the coming wave, and lead to a variety of wave directions, such as oblique wave, cross wave, and aft wave. The fluid analysis software FLUENT was used to simulate the general FPSO model, and seven wave directions of 0°, 30°, 60°, 90°, 120°, 150°, and 180° were simulated. The results show that the ship’s bow can withstand the extreme waves with the 100-year recurrence period in the Brazilian sea area successfully, but all the other conditions have different degrees of upsurge phenomenon. In addition, the bow board can resist not only the bow board up-wave phenomenon but also the bow board and cross wave, which makes the bow board up-wave degree lower. In the case of wave direction of 120°, 90°, and 180°, the threat degree of upsurge is very high, and it is necessary to further evaluate the capsizing risk. This conclusion has certain guiding significance for the design of ship-type FPSO in the following extreme sea conditions.

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