轴流式搅拌器湍流运动特性  

TURBULENCE FLOW GENERATED BY AXIAL IMPELLER

作　　者：侯拴弟[1] 王英琛[1] 张政[1] 施力田[1] 阎旭 

机构地区：[1]北京化工大学化学工程系,北京100029 [2]Dantec测量有限公司北京办事处,北京100083

出　　处：《化工学报》2000年第2期259-263,共5页CIESC Journal

基　　金：国家自然科学基金!资助项目 (No 2 94 762 2 2 )

摘　　要：Single-phase flow patterns generated by axial impeller are investigated by 3D Particle Dynamic Analyzer. Mean flow and turbulence intensities are measured for the impeller zone and the bulk regions. The effect of D/T and blade tip angle on flow pattern is studied as well. The measured results show that the flow in impeller zone oscillates periodically at the frequency of blade sweep. The flow patterns generated by different ratios of impeller diameter to tank diameter impeller are approximately the same below impellers,but a small second recirculation loop is formed in the upper part of vessel at the ratio of impeller diameter to tank diameter D/T=0.35.Single-phase flow patterns generated by axial impeller are investigated by 3D Particle Dynamic Analyzer. Mean flow and turbulence intensities are measured for the impeller zone and the bulk regions. The effect of D/T and blade tip angle on flow pattern is studied as well. The measured results show that the flow in impeller zone oscillates periodically at the frequency of blade sweep. The flow patterns generated by different ratios of impeller diameter to tank diameter impeller are approximately the same below impellers,but a small second recirculation loop is formed in the upper part of vessel at the ratio of impeller diameter to tank diameter D/T=0.35.

关 键 词：搅拌槽 湍流运动 轴流式 搅拌器 混合 搅拌 

分 类 号：TQ051.72[化学工程] TQ027.2