煤液化弯管冲蚀磨损的数值模拟研究  

Numerical Simulation Research of Erosion Wear for Elbows in Coal Liquefaction

作　　者：邵东[1] 王建文[1] 

机构地区：[1]华东理工大学机械与动力工程学院,上海200237

出　　处：《腐蚀与防护》2016年第5期424-429,共6页Corrosion & Protection

摘　　要：针对煤液化工业管道系统中弯管部位的冲蚀磨损问题,通过二次开发将磨损模型嵌入到FLUENT中模拟计算磨损率大小及磨损位置,将计算结果与试验数据相对比以验证模型的正确性,再将磨损模型应用到煤液化管道的冲蚀磨损预测研究中。结果表明:煤粉直径小于80μm时,磨损率随着粒径增大明显降低;最大磨损率与冲击速度成指数增长;最大磨损率随着管道弯曲角度增大而降低;弯径比为3时磨损率较小且磨损分布均匀。The erosion model was inserted into FLUENT by secondary development to calculate the wear rate and simulate the wear position for the elbow erosion wear problem in coal liquefaction industry.The calculated results and test data were compared to validate the correctness of the model.Then the erosion model was applied to predict the erosion at the elbow region in coal liquefaction industry.The numerical results reveal that when the particle diameter was less than 80μm,the maximum wear rate significantly decreased with the increase of particle diameter.Maximum wear rate grows exponential with the increase of impact velocity.The maximum wear rate decreased with the increase of pipe bending angle.Bend diameter ratio of 3was more appropriate.

关 键 词：油煤浆 弯管 固-液两相流 冲蚀磨损 数值模拟 

分 类 号：TG174[金属学及工艺—金属表面处理]