下排气旋风分离器流场的测定及数值模拟  

The Measurement and Numerical Simulation of The Aerodynamic Field inside The Cyclone Separator with Downward Exhaust Gas

作　　者：余战英[1] 奚金祥[1] 徐通模[1] 惠思恩[1] 

机构地区：[1]西安交通大学能动学院,西安710049

出　　处：《动力工程》2002年第5期1941-1944,共4页Power Engineering

摘　　要：通过冷态模化试验对下排气分离器进行了空气动力特性的研究 ,分析得到切向速度分界点半径随气流下旋逐渐减小、导排管之间存在 1 80°涡及径向速度内汇外源等结果。采用 K-ε模型对其内部的三维流体流动进行了数值模拟 ,得到了与实验结果基本一致的湍流流场。图 4参The aerodynamic field inside the cyclone separator with downward exhaust gas is cold molding experimentally examined. Results show that the radius where the maximum tangential velocity occurs decreases as the flow goes down. Vortexes are found in the area between the inducting column and the exhaust duct at 180° orientation of the separator. In the radial direction, fluid converges near the inducting column and flows out near the outsider wall. Numerical simulation is implemented using K-ε model. The calculation results are in qualitative agreement with the experimental results.Figs 4 and refs 5.

关 键 词：下排气旋风分离器 流场 测定 数值模拟 分离效率 阻力特性 

分 类 号：TH237.5[机械工程—机械制造及自动化] O35[理学—流体力学]