段塞流作用下海底悬跨管道涡激振动特性分析

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摘要对海底悬跨管道在段塞流和涡激振动耦合作用下的动力响应进行了数值模拟。基于向量式有限元法（VFIFE）考虑内部段塞流动，结合尾流振子模型建立了海底悬跨管道涡激振动分析模型，研究了不同Taylor气泡或液塞平移速度（VT=3-5m/s）、不同液塞长度(LS=15-45D)下悬跨管道的横向振动特性。研究结果表明，海底悬跨管道涡激振动的锁振（lock-in）区间受段塞流作用的影响有向后延展的趋势；Taylor气泡平移速度的增加、液塞长度的减小会显著增加锁振区间；液塞长度的增长将会增大管道振动响应幅值。

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	李效民
	李胜
	顾洪禄
	郭海燕

关键词 ：悬跨管道, 段塞流, 涡激振动, 向量式有限元

Abstract：Numerical investigation was conducted for the dynamic analysis of the submarine suspended pipeline under the coupling effect of slug flow and vortex-induced vibration (VIV). Considering the internal slug flow, the VIV analysis model of the submarine suspension pipeline is established based on the vector form intrinsic finite element method (VFIFE) and the wake oscillator model. The transverse vibration laws under different Taylor bubble or slug translation velocities (VT=3-5m/s) and different slug lengths (LS=15-45D) were investigated. The analysis results showed that the lock-in region of VIV of the submarine suspended pipeline tends to extend backward due to slug flow. The increase of Taylor bubble translation velocity and the decrease of the slug length significantly increase the lock-in interval. Moreover, the increase of slug length aggravates the vibration amplitude.

Key words： free spanning pipeline slug flow vortex-induced vibration (VIV) vector form intrinsic finite element method (VFIFE)

收稿日期: 2020-12-24 出版日期: 2022-03-28

引用本文:

李效民，李胜，顾洪禄，郭海燕. 段塞流作用下海底悬跨管道涡激振动特性分析[J]. 振动与冲击, 2022, 41(6): 37-43.
LI Xiaomin，LI Sheng，GU Honglu，GUO Haiyan. Vortex-induced vibrations of a free spanning pipeline with slug flow. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(6): 37-43.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2022/V41/I6/37

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