Numerical investigation on dynamic characteristics of oil-water annular flow-induced vibration in curved pipes

IF 2.3 4区工程技术 Q2 ENGINEERING, MECHANICAL

Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering Pub Date : 2024-05-13 DOI:10.1177/09544089241253782

Yuhan Wang, Xiaochuan Wang, Yuxuan Huang, Chaoyu Xu, Jincheng Hu

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Abstract

To improve the stability of water-lubricated transportation and reliability of pipes in service, the fluid–structure interaction numerical model has been established to investigate the dynamic characteristics of oil-water annular flow-induced vibration in curved pipes and the effect of main parameters in this study. The results illustrate that a single vibration mode of curved pipes is excited by oil-water annular flow, and there exists no multi-modality due to the limited pulsation of pressure and interface of two-phase flow. The change of velocities and oil-water ratios leads to change of flow pattern, making the dynamic response severer. When the oil-water ratio is larger than 2.035, its effect is greater than velocity. The physical properties of oil have a significant effect on the dynamic response. The root-mean-square dimensionless displacement AY,RMS/D and maximum dimensionless displacement AY,MAX/D of fuel oil-water annular flow-induced vibration decrease to 75.6% and 76.5% respectively, which means that the increase of dynamic viscosity reduces the fluid force and suppresses the vibration. AY,RMS/D and AY,MAX/D increases by 1.62 times when the bending angle θ increases from 30° to 90°, indicating that the increase of bending angles also leads to the severer dynamic response.

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弯曲管道中油水环流诱导振动动态特性的数值研究

为提高水润滑运输的稳定性和管道服役的可靠性，本研究建立了流固耦合数值模型，研究了油水环流诱发曲线管道振动的动力特性及主要参数的影响。结果表明，油水环形流对弯曲管道的激励为单一振型，由于两相流的压力脉动和界面脉动有限，不存在多振型。速度和油水比的变化会导致流动模式的改变，从而使动态响应更加剧烈。当油水比大于 2.035 时，其影响大于速度。油的物理性质对动态响应有显著影响。燃油-水环流诱导振动的均方根无量纲位移 AY,RMS/D 和最大无量纲位移 AY,MAX/D 分别减小到 75.6% 和 76.5%，这说明动态粘度的增加降低了流体力，抑制了振动。当弯曲角 θ 从 30°增加到 90°时，AY,RMS/D 和 AY,MAX/D 增加了 1.62 倍，表明弯曲角的增加也会导致更严重的动态响应。

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来源期刊

Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 工程技术-工程：机械

CiteScore

3.80

自引率

16.70%

发文量

370

审稿时长

6 months

期刊介绍： The Journal of Process Mechanical Engineering publishes high-quality, peer-reviewed papers covering a broad area of mechanical engineering activities associated with the design and operation of process equipment.