不同工况下异径管冲蚀磨损数值模拟研究  

STUDY ON THE NUMERICAL SIMULATION OF REDUCER EROSION UNDER DIFFERENT WORKING CONDITIONS

作　　者：何兴建[1,2] 李翔[1] 李军[1,2] 

机构地区：[1]中国特种设备检测研究院,北京100013 [2]中国石油大学(北京),北京102249

出　　处：《石油化工设备技术》2015年第3期29-32,6,共4页Petrochemical Equipment Technology

基　　金：国家质检总局公益性行业科研专项201210022;201110025;国家科技支撑计划子任务:2011BAK06B03-15

摘　　要：运用Fluent软件中的DPM模型,对不同入口颗粒浓度和入口速度情况下异径管的冲蚀磨损进行数值模拟研究。通过数值模拟分析得出异径管的流场分布情况以及冲蚀部位分布。结果表明:在变径区域由于流道变窄使流体加速流动,导致颗粒湍动能增大,进而对变径区域壁面造成严重冲蚀;在相同入口颗粒浓度情况下,异径管的冲蚀速率随着入口速度的增大而上升,冲蚀严重区域的位置与尺寸将发生移动和变化;在相同入口速度下,异径管的冲蚀速率随着颗粒浓度的增加而接近于线性上升,冲蚀严重区域的位置与尺寸几乎不变。Using the DPM model in Fluent software,study on the numerical simulation of reducer erosion was made in different inlet particle concentration and inlet velocity comparatively.The distribution of the erosion location and the fluid in reducer can be determined through numerical simulation analysis.The results indicate that the turbulent kinetic energy of particles are increased because of the accelerated flow of fluid by the passage narrowed in the variable diameter area;then serious erosion occurs on the wall of variable diameter area;the erosion rate of reducer is increased with the rise of the inlet velocity in the same inlet particle concentration and the location and size of the serious erosion will move and change;the erosion rate of reducer is linearly increased with the rise of the inlet particle concentration in the same inlet velocity and the size and location of the serious erosion are almost the same.

关 键 词：异径管 冲蚀速率 数值模拟 

分 类 号：TQ055.81[化学工程]