流体机械2026，Vol.54Issue(1)：74-83,10.DOI:10.3969/j.issn.1005-0329.2026.01.010
前置螺旋管段对弯头冲蚀磨损的影响
Influence of the preceding spiral pipe section on erosion wear of elbows
摘要
Abstract
To address the severe erosion issue in common elbows for gas-solid two-phase flow,a pre-helical pipe elbow was designed.The anti-erosion structure of the helical pipe section was optimized using Fluent software in terms of twist angle,installation distance,and intermediate helical pipe section length,resulting in a pre-helical pipe elbow with optimal anti-erosion performance.The anti-erosion effectiveness of this optimized structure was verified under varying medium flow velocities,mass flow rates,and time factors.The results show that the pre-helical pipe elbow exhibits anti-erosion effects only when the twist angle is between 90° and 600°,with an average improvement of 34.13%compared to the common elbow when the twist angle ranges from 210° to 420°.At twist angles of 390°,300°,and 330°,the maximum erosion rates of the pre-helical pipe elbow are lower than those of the common elbow across the studied installation distances and intermediate helical pipe section lengths.Particularly when the installation distance is 0 mm and the intermediate helical pipe section length is 200～400 mm,the anti-erosion effect is more significant.The optimized structural parameters are as follows:helical pipe section twist angle of 390°,installation distance of 0 mm,and intermediate helical pipe section length of 300 mm.Under these conditions,the pre-helical pipe elbow achieves the best anti-erosion performance,improving by 47.32%compared to the common elbow.Furthermore,although the maximum erosion rates of both this elbow and the common elbow increase with medium flow velocity,mass flow rate,and time,the maximum erosion rate of this elbow consistently remains lower than that of the common elbow,indicating that it maintains its anti-erosion effectiveness at all times.The research results can provide a reference for the anti-erosion structural design of elbows.关键词
气固两相流/冲蚀/数值模拟/结构优化Key words
gas-solid two-phase flow/erosion/numerical simulation/structural optimization分类
机械制造引用本文复制引用
谢光明,闫冲冲,黄天成,华剑,李慧,袁新梅..前置螺旋管段对弯头冲蚀磨损的影响[J].流体机械,2026,54(1):74-83,10.基金项目
国家科技重大专项(2016ZX05038-001-LH002) （2016ZX05038-001-LH002）
