Special Topics in Structural Dynamics & Experimental Techniques, Volume 5 - Proceedings of the 41st IMAC, A Conference and Exposition on Structural Dynamics 2023
Special Topics in Structural Dynamics & Experimental Techniques, Volume 5 - Proceedings of the 41st IMAC, A Conference and Exposition on Structural Dynamics 2023
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结构动力学专题
DOI：
10.1007/978-3-031-37007-6_9
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发表时间：
2024
期刊：
影响因子：
--
通讯作者：
Hunt G
中科院分区：
文献类型：
--
作者：
Hunt G
对气液流通过管道立管（如石油和天然气工业中使用的立管）时的流固相互作用进行了实验研究。在本研究中，使用内径为 50 毫米、压力为 10 巴（表压）的 10 米长管道，工作流体为水和氮气。两相流态图用于确定段塞流态内的液体和气体体积流量，并使用 PETEX GAP 和最终 CFD 软件 STAR-CCM+ 进一步细化，以确定实验测试矩阵。轴向应变计放置在靠近立管末端的法兰处，以测量立管顶部和底部管道基点处的应变。在从入口到立管的水平距离大约 2 m 和 3 m 处，安装了加速度计来监测管道在这些位置的运动。据观察，管道的运动几乎全部发生在平面内，加速度计上仅记录到少量的平面外运动。应变仪测量表明，所提供的液相质量流量的增加/气相质量流量的减少增加了立管入口和出口处的污点平均值。随着液相或气相流速的增加，观察到应变波动的均方根值单调增加。除了平滑的振荡运动之外，所测试的最高流量还会在软管中引入不规则的循环鞭打运动。
An experimental study into the fluid–structure interaction of gas–liquid flows as they pass through a pipeline riser, like those utilized in the oil and gas industry, was carried out. In this study, a 10-m-long pipe with inner diameter of 50 mm at 10 bar (gauge) pressure was used with operating fluids of water and nitrogen. A two-phase flow regime diagram is used to determine liquid and gas volume flow rates that fall within the slug flow regime, and this was further refined using PETEX GAP and finally CFD software, STAR-CCM+, to determine the experimental test matrix. Axial strain gauges were positioned close to the flanges at the ends of the riser to measure strain at the cardinal points of the pipe at both the top and bottom of the riser. At approximately 2 m and 3 m horizontal distance from the entrance to the riser, accelerometers were attached to monitor the motion of the pipe at these positions. The motion of the pipe was observed to be almost exclusively in-plane, with only small out-of-plane motion registered on the accelerometers. Strain gauge measurements demonstrated that the increase in mass flow rate of the liquid phase/decrease in mass flow rate of the gas phase served increases the mean values of stain at both the entrance and exit of the riser. A monotonic increase in the magnitude of the rms of the fluctuations of the strain was observed for an increase in the flow rate of either the liquid or the gas phase. The highest flow rates tested introduce an irregular cyclic whipping motion in the flexible pipe in addition to the smooth oscillation motion.