固体颗粒对T型盲管弯头结构冲蚀的数值模拟
Numerical Simulation of the Erosion Characteristics of T-shape Blind Elbow by Solid Particles
摘 要
利用欧拉-拉格朗日方法对T型盲管弯头中气固两相流对管壁的冲蚀程度进行三维数值模拟。通过数值模拟分析得到T型盲管弯头中流场分布情况和不同盲管长度时的最大冲蚀速率。结果表明：气体流场在T型盲管弯头后半部分可以形成气体旋涡和气垫，在一定程度上有助于降低固体颗粒对管壁的冲蚀速率。冲蚀速率随着盲管长度增加而减小；但在盲管长度为6倍管径的时候存在拐点；不同盲管长度的T型盲管弯头的最大冲蚀位置均位于盲管的末端，但随着盲管长度的增加最大冲蚀位置逐渐向下偏移；入口速度越大，最大冲蚀速率越大，同时盲管长度对冲蚀速率的影响程度越剧烈；颗粒粒径越大对管壁的冲蚀程度越大。
多相流
冲蚀速率
盲管长度
颗粒轨迹
T-shape blind elbow
multiphase flow
erosion rate
blind elbow length
particle track
Abstract
Euler-Lagrange method was used to simulate the erosion degree of the gas-solid two-phase flow in a T-shape blind elbow. Through numerical simulation, the flow field distribution in the T-shape blind elbow and the maximum erosion rate in different blind elbow lengths were obtained. The results show that the gas flow field could form a gas vortex in the latter half of the T-shaped blind elbow, which helped to reduce the erosion rate of the solid particles on the wall. The erosion rate decreased with the increase of the length of the blind elbow, the maximum erosion position of the T-type blind tube was located in the end of blind tube. With the increase of the length of the blind tube, the maximum erosion position gradually moved down and there was more influence of the length of the blind elbow on the erosion rate. Also the larger size of the particle, the greater the erosion rate was.
中图分类号 TG174 DOI 10.11973/fsyfh-202101007
所属栏目 数值模拟
基金项目 国家自然科学基金（51874340）；山东省自然科学基金（ZR2018MEE004）
收稿日期 2018/12/15
修改稿日期
网络出版日期
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引用该论文: CAO Xuewen,ZHANG Yichi,SUN Xiaoyang,QIAO Xin. Numerical Simulation of the Erosion Characteristics of T-shape Blind Elbow by Solid Particles[J]. Corrosion & Protection, 2021, 42(1): 30
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参考文献
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【2】SALAMA M M,VENKATESH E S. Evaluation of API RP 14E erosional velocity limitations for offshore gas Wells[C]//Offshore Technology Conference. Houston,Texas:Offshore Technology Conference,1983:OTC4485.
【3】SALAMA M M. An alternative to API 14E erosional velocity limits for sand laden fluids[C]//Offshore Technology Conference. Houston,Texas:Offshore Technology Conference,1998:OTC8898.
【4】BOURGOYNE A T J R. Experimental study of erosion in diverter systems due to sand production[C]//SPE/IADC Drilling Conference. New Orleans:Society of Petroleum Engineers,1989:807-816.
【5】FINNIE I,MCFADDEN D H. On the velocity dependence of the erosion of ductile metals by solid particles at low angles of incidence[J]. Wear,1978,48(1):181-190.
【6】BITTER J G A. A study of erosion phenomena[J]. Wear,1963,6(3):169-190.
【7】LEVY A V. The erosion of structural alloys,cermets and in situ oxide scales on steels[J]. Wear,1988,127(1):31-52.
【8】LACKERMEIER U,WERTHER J. Flow phenomena in the exit zone of a circulating fluidized bed[J]. Chemical Engineering and Processing:Process Intensification,2002,41(9):771-783.
【9】LIN N. Erosion study on typical fittings in high pressure natural gas pipeline[D]. Beijing:Beijing Jiaotong University,2013.
【10】CHEN X H,MCLAURY B S,SHIRAZI S A. Application and experimental validation of a computational fluid dynamics (CFD)-based erosion prediction model in elbows and plugged Tees[J]. Computers & Fluids,2004,33(10):1251-1272.
【11】PARSI M,NAJMI K,NAJAFIFARD F,et al. A comprehensive review of solid particle erosion modeling for oil and gas wells and pipelines applications[J]. Journal of Natural Gas Science and Engineering,2014,21:850-873.
【12】付林. 油煤浆输送管道弯头部位冲击磨损预测与壁厚预测[D]. 天津:河北工业大学,2009.
【13】DUARTE C A R,DE SOUZA F J,DOS SANTOS V F. Numerical investigation of mass loading effects on elbow erosion[J]. Powder Technology,2015,283:593-606.
【14】CHEN J K,WANG Y S,LI X F,et al. Erosion prediction of liquid-particle two-phase flow in pipeline elbows via CFD-DEM coupling method[J]. Powder Technology,2015,275:182-187.
【15】GRANT G,TABAKOFF W. Erosion prediction in turbomachinery resulting from environmental solid particles[J]. Journal of Aircraft,1975,12(5):471-478.
【16】FORDER A,THEW M,HARRISON D. A numerical investigation of solid particle erosion experienced within oilfield control valves[J]. Wear,1998,216(2):184-193.
【17】SOMMERFELD M,HUBER N. Experimental analysis and modelling of particle-wall collisions[J]. International Journal of Multiphase Flow,1999,25(6/7):1457-1489.
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