化工进展Issue(5)：1118-1122,1169,6.DOI:10.3969/j.issn.1000-6613.2014.05.008
圆盘涡轮式桨叶对搅拌槽混合特性影响的CFD研究
CFD research for influence of disk turbine blade on mixing characteristics in stirred tank
摘要
Abstract
Concentration field in the stirred tank with disc turbine paddle was studied by numerical simulation method CFD. This paper mainly investigated the effects of the location of the common straight blade (90° ) and inclined blades (60° and 45°) on mixed timeθm,mixing energy per unit volume Wr and the concentration standard deviation of mixing σ. The data of simulation speed agreed well with experimental data under the standard installation height of straight blade. The research showed that flow pattern within the mixing tank turns from radial flow into axial flow when the installation height of disc turbine blade is decreased from the standard height. The relative installation height (C/H ) of 90°,60° and 45° paddle was 0.20,0.233 and 0.267 respectively when flow pattern turned into axial flow. Mixing time was decided by the top and bottom detection positions of tank. The standard relative installation height (C/H=1/3 ) was not the optimal location of the mixing performance. The mixing performance of 90°,60° and 45° blades was optimal when the relative installation height was at 0.313,0.267 and 0.320 respectively. Combing the advantages of saving time, energy and mixing uniformity,blade of 45° was the best and 60o took the second place.关键词
圆盘涡轮式桨叶/混合性能/安装高度/倾角/计算流体力学Key words
disc turbine blades/mixing performance/installation height/inclined angle/CFD分类
化学化工引用本文复制引用
贾慧灵,齐岩,李沼希..圆盘涡轮式桨叶对搅拌槽混合特性影响的CFD研究[J].化工进展,2014,(5):1118-1122,1169,6.基金项目
内蒙古自治区高等学校科学技术研究项目（NJZY14169）及内蒙古科技大学教学（教改）研究项目（JY2013042）。 （）
