气液两相段塞流作用下管道流固耦合动力学分析  

Fluid-structure interaction dynamic analysis of pipe under gas-liquid two-phase slug flow

作　　者：张红艳[1] 白长青[2] 吴伟阳[3] 刘剑锋[3] 吴霜[3] 刘晓强[3] 

机构地区：[1]长安大学理学院,西安710064 [2]西安交通大学航天航空学院机械结构强度与振动国家重点实验室,西安710049 [3]中石油大连石化分公司,大连116032

出　　处：《应用力学学报》2017年第4期661-665,共5页Chinese Journal of Applied Mechanics

基　　金：陕西省自然科学基金(2014JM1023);西安交通大学高校基本科研业务费(XJJ2015105)

摘　　要：气液两相流的不稳定流动和管道动力响应之间的耦合作用是引起管道振动问题的直接原因。本文通过轻烃回收重沸器管道的流固耦合动力学数值仿真和气液两相流理论分析,深入研究了管道振动内在机理,发现了垂直管段中段塞流是引起管道振动的原因。通过研究现场工况中不同气液组分下段塞流的流动规律,进而进行了管道流固耦合动力学分析,获得了不同工况下管道振动响应。数值结果表明:稳定段塞流和不稳定段塞流冲击作用下管道振动显著;在强烈段塞流作用下,管道振动峰值更加显著,振动峰值超过10mm,振幅峰峰值也超过8mm。研究揭示了气液两相段塞流作用下管道的振动特性,为这类典型管道振动问题的治理提供了理论和方法依据。Coupled interaction between the unsteady flow of the gas-liquid and the dynamic response of the pipe is the direct cause of the pipe vibration. The numerical simulation and theoretical analysis of the light hydrocarbon recovery reboiler pipe are carried out in this paper. The inner mechanism of pipe vibration is investigated in depth, which indicates that the slug flow of the vertical pipe accounts for the pipe vibration. Through analyzing the slug flow laws for different gas-liquid components in actual working cases, the fluid-solid coupled dynamic analysis of the pipe is performed and the vibration responses of pipe for different cases are obtained. The numerical results show that the pipe vibration is significant under the stable and unstable slug. Furthermore, the vibration under the severe slug flow is far more remarkable. The peak value of the vibration is more than 10 mm and the maximum value of the vibration amplitude could reach to 8 mm.The vibration characteristics of pipe under gas-liquid two phase slug flow are revealed through the research and the theory and method are provided for such typical pipe vibration problems.

关 键 词：管道振动 两相流 段塞流 重沸器管道 

分 类 号：O353.1[理学—流体力学]