搅拌器内动/静叶相干非定常流场的数值分析  

Numerical Analysis of the Unsteady Rotor/Stator Interaction Flow in an Agitator

作　　者：周莉[1] 席光[1] 邱凯[1] 王尚锦[1] 

机构地区：[1]西安交通大学能源与动力工程学院,西安710049

出　　处：《西安交通大学学报》2002年第9期907-911,共5页Journal of Xi'an Jiaotong University

基　　金：教育部高等学校博士学科点专项科研基金资助项目 (2 0 0 0 6 980 2 )

摘　　要：研究了搅拌器内非定常流场的分布 ,并与实验结果做了比较 .讨论了各种湍流模型对所计算的漩涡结构的影响 ,并预测了非定常流动的精度 .研究表明 ,使用可实现k -ε模型所监控值易出现周期性漂移 ;使用标准k -ε模型时 ,在近壁处采用双层区域模型 ,计算的漩涡分布与实验结果最接近 .同时发现 ,当转速提高到 2 10r/min后 ,有叶尖涡存在 ,涡心随转子的叶尖移动 ,且随着转速的升高 。The unsteady flows in an agitator are calculated numerically and compared with experimental data. The influence of turbulent models on the eddy distribution and the prediction of unsteady flows is studied. The study shows that the periodic migration appears easily with the realizable κ-Ε model and the calculated eddy structure is in a good agreement with experimental results, when the standard k-Ε model is adopted in conjunction with the two-layer zonal model in the near-wall treatment. It is found that when the shaft speed is up to 210 r/min, a new eddy appears near the tip of rotational blade, the center of the eddy moves with the rotational blade, and the intensity of the eddy increases with the shaft speed.

关 键 词：搅拌器 动/静叶 数值分析 非定常流场 湍流模型 漩涡结构 动静相对运动 化工机械 

分 类 号：TQ051.72[化学工程] TQ021.1