Progress in the Research of Wave Slamming Forces on Vertical Cylinders

Ma, Yuxiang; Tai, Bing; Xie, Bin; Xu, Tiao-Jian; Perlin, Marc; Dong, Guohai

doi:10.1007/s11804-023-00313-1

Cited by 4 publications

(1 citation statement)

References 91 publications

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“…For the sandglass-type FPSO, although the new shape can improve the motion performance in waves, its distinctive shape with oblique side and external expansion will cause large-area flare, which may result in specific slamming problems, possibly affecting structural safety. The slamming event is mostly characterized by nonlinear flow phenomenon and large impulsive pressures that are considerably distributed in time and space [10]. The pressure peak with a short duration is governed by the inertial effects induced by the strong acceleration of the liquid hitting the wall.…”

Section: Introductionmentioning

confidence: 99%

Slamming Characteristics Due to the Special Shape of New Sandglass-Type Model in Waves by Comparing with Cylindrical Model

Wang,

Piao,

Geng

et al. 2024

JMSE

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For the new sandglass-type FPSO, the unique shape of its floating body with oblique side and external expansion can significantly improve the motion performance, but meanwhile may result in specific slamming characteristics in waves. On this basis, this paper establishes a CFD method including numerical wave-tank technique based on the Open FOAM platform. Therein, the velocity-inlet boundary method and the active absorption method are applied for numerical wave-making and wave-absorption. Compared with experimental results, the numerical method can be validated to be accurate enough to simulate wave slamming on floating ocean platforms. Then, the specific slamming phenomena on the sandglass-type floating body under a classic long wave can be investigated by comparing with the cylindrical model, including nonlinear wave rollover and breaking, water cushion, rooster-tail wave, side wave, water tongue, and so on. The mechanism of these phenomena and their effects on slamming pressure are studied. The essences of typical peaks in the time-history curve of the slamming pressure are mainly discussed. More interestingly, the main peak can be found to be related to the small peak due the amount of the broken water and the thickness of the water cushion. Finally, the slamming characteristics of the sandglass-type model in a classic short-wave condition are comparatively discussed.

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Section: Introductionmentioning

confidence: 99%