摘要
采用计算流体动力学(CFD)方法分析不同管道参数包括管道直径、弯径比、弯曲角度条件下含砂液/固两相流管道的冲蚀规律,并结合颗粒碰撞模型分析了砂粒对于管壁的冲蚀作用。结果表明:不同管道参数变化影响冲蚀速率的效果是不同的,其中改变管径的影响最大、弯径比次之、弯管角度的影响最小;弯管冲蚀最严重区域有弯头侧壁及下游直管段与弯头连接处外侧,冲蚀最严重区域并不是确定的,随着弯管参数的改变,冲蚀最严重区域会发生移动。
The influence of pipebend parameters on flow field of liquid-solid two-phase flow and the erosion of pipes was studied by means of computational fluid dynamics （CFD）. The relation of the erosion of pipe with the variation of the diameter, curvature-to-diameter ratio and bending an- gle of the pipe, as well as the particles induced erosion of the pipe wall were mainly concerned. The results show that： （1） the erosion rate varies with the varying pipeline parameters, among them the diameter is the main factor, the curvature-to-diameter ratio the next, and the bending angle the last; （2） the areas of serious erosion mainly exist in the side walls of joints as well as the outside of the joints between export of straight pipe and elbow. However, the location of the most serious ero- sion is uncertain, which will change along with the variation of the bend pipe parameters.
出处
《中国腐蚀与防护学报》
CAS
CSCD
北大核心
2016年第1期87-96,共10页
Journal of Chinese Society For Corrosion and Protection
基金
国家自然科学基金项目(51274232)
中央高校基本科研业务费专项资金项目(15CX06070A)资助
关键词
液/固两相流
弯管直径
弯径比
弯曲角度
颗粒轨迹
Stokes数
liquid-solid two-phase, pipe bend diameter, curvature-to-diameter ratio, bendingangle, trajectory, Stokes number
