输油管路油气两相脉冲冲洗的仿真试验研究

栗涛杰; 徐屾; 肖兰兰; 杨兆霞

doi:10.12299/jsues.22-0135

输油管路油气两相脉冲冲洗的仿真试验研究

doi: 10.12299/jsues.22-0135

1.
上海工程技术大学机械与汽车工程学院, 上海 201620
2.
中国人民解放军95958部队, 上海 200120

基金项目: 上海市地方能力建设项目资助(19030501100)；上海市专业技术服务平台资助(18DZ2295900)

详细信息

作者简介:
栗涛杰（1995−），男，在读硕士，研究方向为输油管道冲洗. E-mail: 2697141030@qq.com

通讯作者:
徐　屾（1986−），女，副教授，博士，研究方向为微尺度传热测量. E-mail：shxu16@sues.edu.cn

中图分类号: TB126
计量
- 文章访问数: 211
- HTML全文浏览量: 89
- PDF下载量: 80
- 被引次数: 0
出版历程
- 收稿日期: 2022-05-08
- 刊出日期: 2022-12-30

Simulation test research on oil-gas two-phase pulse flushing of oil pipeline

1.
School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
2.
Unit 95958 of the PLA, Shanghai 200120, China

摘要

摘要:
提出一种油气脉冲冲洗方式，通过改变充气时间产生脉冲震荡流，去除管内污染物. 建立油气脉冲动力学模型和数学控制方程，基于Ansys Fluent模块进行用户自定义函数（UDF）二次开发并仿真试验. 采用k−ε二方程湍流模型、气液两相流流体体积（VOF）模型，并用Simple算法迭代求解，对z=0截面上距进口不同位置处的径向速度、湍流强度、动压及壁面剪切力进行研究. 结果表明，油气两相流冲洗的流速、湍流强度、动压以及壁面剪切力都高于油冲洗时的值；脉冲冲洗法压缩空气，使其以脉冲形式作用于油上，增强紊流脉动性，增加惯性切应力，清洗效果优于持续充气法. 研究结果为管道油气脉冲冲洗提供理论依据和工程实践方法.
- 油气脉冲 /
- 数值模拟 /
- 管道冲洗 /
- 仿真试验
Abstract:
An oil-gas pulse flushing method was proposed to remove contaminants in the pipe by changing the charging time to generate a pulse oscillating flow. The oil-gas pulse dynamic model and the mathematical governing equation were established, user defined function (UDF) secondary development based on Ansys Fluent module and simulation test were carried out. k−ε two equation turbulence model and volume of fluid (VOF) model for gas-liquid two-phase flow were used, and Simple algorithm was carried to solve iteratively, the effects of radial velocity, turbulence intensity and dynamic pressure on z = 0 cross-section at different positions from the inlet, as well as wall shear force were studied. The results show that the flow velocity, turbulence intensity, dynamic pressure and wall shear force of oil-gas two-phase flushing are higher than that of single oil flushing. Pulse flushing compresses air to act on oil in the form of pulse, which enhances turbulence pulsation and increases inertia shear stress. The cleaning effect is better than continuous charging method. The result can provide theoretical basis and engineering practice method for pipeline oil-gas pulse flushing.
- oil-gas pulse /
- numerical simulation /
- pipe flushing /
- simulation test

HTML全文

图 1 管道几何模型及网格划分

Figure 1. Pipe geometric model and mesh generation

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图 2 两种冲洗方式截面相分布

Figure 2. Cross-sectional phase distribution for two flushing methods

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图 3 距离进口不同位置处速度分布

Figure 3. Velocity distribution at different positions from inlet

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图 4 距离进口不同位置处湍流强度分布

Figure 4. Turbulence intensity distribution at different positions from inlet

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图 5 距离进口不同位置处动压分布

Figure 5. Dynamic pressure distribution at different positions from inlet

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图 6 壁面剪切应力分布

Figure 6. Wall shear stress distribution

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