旋流器内气相时均流场的试验研究  

Experimental Study on the Time-mean Flow Field in Cyclone Separator

作　　者：李虹[1] 金向红[1] 

机构地区：[1]安徽理工大学,安徽淮南232001

出　　处：《流体机械》2011年第4期5-9,共5页Fluid Machinery

摘　　要：采用多普勒激光测速仪对旋流分离器内三维湍流的时均流场进行了测量,考察了导叶导角和流量变化对时均流场的影响。测量结果表明：在分离空间,切向速度分布呈现典型的Rankin涡结构,切向速度沿轴向衰减不明显,轴向速度是由外围的下行流与内部的上行流结构,轴向速度沿轴向衰减。最大切向速度面与轴向LZVV面呈现与筒体相似的管锥形。对环形空间和集液槽内时均流场的结构也进行了分析。Time-averaged velocities of three-dimensional turbulence flow field in a cyclone separator were measured by using Laser Doppler Velocimeter.The effect of different guide vane angle and flow rate on the time-mean flow field has been studied.In the separation space,the results show that the tangential velocity profiles have a typical Rankine vortex structure,and the tangential velocity decay slightly with axial distance.The axial velocity profiles is constructed by outer downward flow and inner upward flow,and the axial velocity decay with axial distance.The profiles of the maximal tangential velocity and axial LZVV exhibit likeness to the cylinder-on-cone structure of the vessel.The features of the time-mean flow field in the annual space and liquid chamber were discussed and analysed.

关 键 词：气液旋流分离器 多普勒激光测速仪 时均流场 

分 类 号：TQ051.8[化学工程]