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海洋立管系统内气液两相流流激力实验与计算模型
Flow-induced force experiment and computing model for gas-liquid
two-phase flow in marine riser system
riser system
; gas-liquid two-phase flow; flow-induced force; flow pattern; experimental study; computing model
在海洋油气开发中,随着输送压力和管流速度的不断增大,由管道内流引起的振动问题成为流
动安全保障的重要内容之一。通过搭建组合立管实验平台,对由气液两相流引起的流激力展开研究。
根据持液率信号和实验观测结果,对立管内局部流型进行划分,后对流激力的影响因素进行分析,建立
了流激力波动主频和最大流激力均方根值Frms 的计算模型,结果表明:Frms 出现在段塞流与搅混流的
边界处;随入口含气率的增大,Frms 基本呈现先增大后减小的规律,但对于SS Ⅱ型严重段塞流,仍然
能够产生较大流激力。研究成果可为海洋立管系统的设计、运行提供理论参考。
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