|New method in suppressing vortex-induced vibration of marine riser|
|Zhong XF(钟兴福); Lin LM(林黎明); Wu YX(吴应湘); Shi SY(史仕荧); Zhong XF(钟兴福)
|Source Publication||VIBRATION, STRUCTURAL ENGINEERING AND MEASUREMENT II
|Conference Name||2012 International Conference on Vibration, Structural Engineering and Measurement, ICVSEM 2012
|Conference Date||OCT 19-21, 2012
|Conference Place||Shanghai, China
|Abstract||Marine risers are key apparatus in connecting the subsea wells to the oil production platform. When the ocean current flow past a riser, the vortex shedding behind riser may induce vibration. If the frequency of vortex shedding is approaching or equal to the natural frequency of riser, the resonance will be generated. Such phenomenon leads to the potential fatigue damage of riser. Therefore, the safety and assurance of marine risers are widely arousing the interest of offshore engineering. In present paper, previous apparatus or methods in suppressing vortex-induced vibration (VIV) of risers used in marine engineering are firstly analyzed, and correspondingly the conditions in design of VIV suppressors are proposed. Based on the Bernoulli equation, the disturbance in flow around a bluff body and the relationship of vortex shedding in span-wise direction, a new method of VIV suppression is proposed. The numerical results have shown that the vibration of risers could be reduced by such disturbance.|
Ocean Current Flows
Oil Production Platforms
Vortex Induced Vibration
|Corresponding Author||Zhong XF(钟兴福)|
Zhong XF,Lin LM,Wu YX,et al. New method in suppressing vortex-induced vibration of marine riser[C]VIBRATION, STRUCTURAL ENGINEERING AND MEASUREMENT II,2012:9-12.
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