Numerical Simulation of Liquid⁃Solid Two⁃Phase Erosion Corrosion in π⁃Shaped Pipe

doi:10.3969/j.issn.1672-6952.2021.04.009

Abstract

Abstract:

Erosion corrosion often occurs in oil pipeline system. The main reason for erosion corrosion is the impact of particles on the wall. DPM model was used to study the erosion effect of solid particles on the pipe wall, analyze the flow characteristics of π?shaped pipe, and study the influence of fluid velocity, particle mass flow rate, particle diameter and density on the erosion corrosion rate of the pipe. The simulated results show that the erosion corrosion of π?shaped pipe is the most serious at the elbow. The maximum erosion corrosion rate increases with the increase of fluid velocity and particle mass flow rate. As the particle diameter and density increase, the erosion effect is weakened.

Key words: Solid particles, π?shaped pipe, Erosion wear, Numerical simulation

摘要：

输油管道系统常常会发生冲刷腐蚀现象，冲刷腐蚀现象产生的主要原因是颗粒对壁面的撞击。使用DPM模型研究固体颗粒对管壁的冲蚀作用，分析π型管的流动特性，研究流体速度、颗粒质量流量、颗粒直径以及颗粒密度对管道冲刷腐蚀速率的影响。模拟结果表明，π型管道在弯头处冲刷腐蚀最严重；当流体速度增大、颗粒质量流量增多时，最大冲刷腐蚀速率增大；当颗粒直径和密度增大时，冲刷腐蚀效果削弱。

关键词: 固体颗粒, π型管, 冲刷腐蚀, 数值模拟

CLC Number:

TE89

Ying Lu, Guiyang Ma. Numerical Simulation of Liquid⁃Solid Two⁃Phase Erosion Corrosion in π⁃Shaped Pipe[J]. Journal of Liaoning Petrochemical University, 2021, 41(4): 52-57.

陆莹, 马贵阳. π型管液固两相冲刷腐蚀数值模拟[J]. 辽宁石油化工大学学报, 2021, 41(4): 52-57.

Figures/Tables 11

References 21

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序号	α/(°)	f(α)
1	0	0
2	20	0.8
3	30	1.0
4	45	0.5
5	90	0.4

序号	α/(°)	f(α)
1	0	0
2	20	0.8
3	30	1.0
4	45	0.5
5	90	0.4

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