Simulation of gas-solid two-phase flow erosion in elbow

Abstract

Abstract: On the basis of research background of a gas transmission process containing solid impurity particles, a E/CRC model for erosion-induced wear developed in ANSYS-FLUENT software is used in this paper to simulate the gas-solid two-phase flow in a 90°curved pipe in a gas pipeline. All effects such as different gas velocity, mass flow rate of solid impurity particles, and particle size of solid impurity particles on erosion-induced wear to 90° elbow of the curved pipe are discussed in detail. Our analytical results show that the larger the gas inlet velocity is, the greater the erosion rate of 90 °bend is, and the greater the mass flow rate of solid impurity particles is, the greater the erosion rate of 90°bend is. As if the particle size is less than a certain critical value, the larger the particle size is, the smaller the erosion rate is. When the particle size is larger than this critical value, the larger the particle size is, the greater the erosion rate is. The research result can be used in duty inspection of gas transportation pipeline by predicting the possibility of pipeline erosion, which can save the inspection cost and improve the safety of gas transportation in pipeline.

Key words: finite element simulation, elbow, erosion, gas-solid two-phase flow

CLC Number:

TE832

LI Cang, SUN Bao-cai. Simulation of gas-solid two-phase flow erosion in elbow[J]. Journal of Lanzhou University of Technology, 2020, 46(4): 79-83.

References

[1] 许留云,胡泷艺,姚赛,等.90°弯管内冲蚀磨损的试验研究和数值计算 [J].当代化工,2017,46(2):308-310.
[2] 曹学文,李星標,樊茵,等.固体颗粒冲蚀理论与试验研究进展 [J].油气储运,2019,38(3):251-257.
[3] LEVY A V.The erosion of structure alloys cements and insitu oxide scales on steels [J].Wear,1988,127(1):31-52.
[4] SHELDON G L,ASHOK K.An investigation of impingement erosion using single particles [J].Wear,1972,21(1):195-209.
[5] HUTCHINGS I M.A model for the erosion of metals by spherical particle at normal incidence [J].Wear,1981,70(3):269-281.
[6] 黄勇,蒋晓东,施哲雄.弯头的冲蚀问题及其预测和预防 [J].炼油技术与工程,2005(2):33-36.
[7] 李国美,王跃社,黄刚,等.套管壁面颗粒粒冲蚀预测及减弱措施研究 [J].石油机械,2010,38(1):20-24.
[8] 郑友取,张新育.90°方形弯管内颗粒冲蚀磨损研究 [J].热力发电,2007(4):34-37.
[9] 王凯,李秀峰,王跃社,等.液固两相流中固体颗粒对弯管冲蚀破坏的位置预测 [J].工程热物理学报,2014,35(4):691-694.
[10] ZHU H,LI S.Numerical analysis of mitigating elbow erosion with a rib [J].Powder Technology,2018,330:445-460.
[11] 韩志武,张俊秋,施云蛟,等.射流式气/固冲蚀测试装置:中国,CN102288538A[P].2011-12-21.
[12] 崔钺,兰惠清,何仁洋,等.冲蚀作用下CO₂分压对集输气管线内腐蚀的影响规律——以大庆油田徐深6集气站集输管线为例 [J].天然气工业,2013,33(2):128-132.
[13] 黄勇,王雪东,王京印,等.基于CFD的排屑管路弯头局部冲蚀磨损研究 [J].石油机械,2014,42(2):6-9.
[14] 成芳,易先中,彭灼,等.页岩气压裂弯管中液固两相流冲蚀磨损的数值模拟 [J].中国安全生产科学技术,2019,15(11):29-35.
[15] 李静雅,徐力生,徐蒙.基于CFD-DPM耦合法新型差压密度计中水泥浆液流动特性分析 [J].中南大学学报(自然科学版),2017,48(5):1308-1315.
[16] YU R L,LIANG R,ZHOU W H,et al.Stress analysis of a filter screen based on dimensional analysis and finite element analysis [J].Engineering Applications of Computational Fluid Mechanics,2020,14(1):168-179.
[17] 李德顺,王成泽,李银然,等.风沙环境下风力机叶片冲蚀磨损的数值研究 [J].太阳能学报,2018,39(3):627-632.
[18] 彭文山,曹学文.基于气—固双向耦合的输气管道最大冲蚀角度预测 [J].天然气工业,2016,36(2):110-118.
[19] 刘寒月,魏宁.固体颗粒对油气井管柱的冲蚀损伤研究 [J].中国矿业,2018,27(2):157-162.