海底管道内部流动引起的流致振动问题研究进展

随着深海油气开发进度的加快,管内压力和流速逐渐增加,由管道内部流动引起的流致振动问题越来越受到海洋工程界的重视。本文围绕海底管道内流激振力引发的流致振动问题,从海底管道内流流致振动的理论模型、数值模拟和实验研究等方面对两相流管道系统中的流致振动研究进展进行综述,总结了多相流流致振动的成因和适用不同管道对象的理论模型;并指出采用流固耦合模拟方法可以更好地考虑实际情况,但段塞流和管道本身非线性影响的叠加增加了模拟的复杂性,建议可采用海底管道系统与管道局部仿真相结合的方法来提高模拟的准确性;同时指出目前的实验研究尽管可以给出短时间内的振动响应特性,但管道疲劳破坏演化过程及规律还有待进一步研究。

Research progress of flow-induced vibration caused by internal flow in submarine pipeline

With the rapid development of deep-sea oil and gas,the pressure and flow velocity in the pipeline increase gradually,and the flow induced vibration caused by internal flow in the pipeline attracts more and more attention in the ocean engineering field.Focusing on the fluid induced vibration caused by intraflow exciting force in submarine pipeline,this paper,from the aspects of theoretical model,numerical simulation and experimental research,etc.,reviews the research progress of fluid induced vibration in two-phase flow pipeline system,and summarizes the causes of multi-phase flow induced vibration and the theoretical models suitable for different pipelines.The method of fluid-structure interaction was considered to be better due to considering the actual situation of simulation.However,the superposition of slug flow and the nonlinear effect of the pipeline itself increase the complexity of the simulation.It is suggested that the accuracy of the simulation can be improved by combining the submarine pipeline system with local simulation of the pipeline.At the same time,it is pointed out that although the vibration response characteristics in a short time can be obtained by current experimental researches,the evolution process and law of pipeline fatigue failure need to be further studied.