Journal of Shanghai Jiao Tong University

Journal of Shanghai Jiaotong University >

2021 , Vol. 55 >Issue 5: 497 - 504

DOI: https://doi.org/10.16183/j.cnki.jsjtu.2020.206

Comparative Test of Characteristics of Vortex-Induced Motion and Galloping of Classic Spar Platform

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  • 1. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
    2. SJTU-Sanya Yazhou Bay Institute of Deepsea Science and Technology, Sanya 572024, Hainan, China

Received date: 2020-07-01

  Online published: 2021-06-01

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Abstract

In order to study the characteristics of vortex-induced motion and galloping of the classic Spar platform, a model test with a mooring system is conducted in basin. The sway motion characteristics of the Spar platform at different current velocities are analyzed. By comparing the results in currents, waves, and wave-current coupled conditions, the coupling effects of current and wave on vortex-induced motion and galloping of the Spar platform are also studied. The results show that galloping is induced by the currents with high reduced velocities. Compared with the vortex-induced motion, the galloping phenomenon has a longer period, larger amplitude, and randomness. The coupling of current and wave would not change the mode of flow-induced motion, but it significantly affects the motion amplitude.

Key words： Spar platform; vortex-induced motion; galloping; model test; hydrodynamics of marine engineering

Cite this article

ZHANG Chenya, KOU Yufeng, LÜ Haining, XIAO Longfei, LIU Mingyue . Comparative Test of Characteristics of Vortex-Induced Motion and Galloping of Classic Spar Platform[J]. Journal of Shanghai Jiaotong University, 2021 , 55(5) : 497 -504 . DOI: 10.16183/j.cnki.jsjtu.2020.206

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