[1]魏新利,任杰,王定标,等.搅拌反应器流场的数值模拟[J].郑州大学学报(工学版),2006,27(02):52-55.[doi:10.3969/j.issn.1671-6833.2006.02.013]
　WEI Xinli,Ren Jie,Wang Dingping,et al.Numerical simulation of the flow field of a stirred reactor[J].Journal of Zhengzhou University (Engineering Science),2006,27(02):52-55.[doi:10.3969/j.issn.1671-6833.2006.02.013]
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搅拌反应器流场的数值模拟()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
27
期数:
2006年02期
页码:
52-55
栏目:
出版日期:
1900-01-01

文章信息/Info

Title:

Numerical simulation of the flow field of a stirred reactor
作者:
魏新利; 任杰; 王定标; 等.
郑州大学化工学院,河南,郑州,450002, 郑州大学化工学院,河南,郑州,450002, 郑州大学化工学院,河南,郑州,450002, 郑州大学化工学院,河南,郑州,450002
Author(s):
WEI Xinli; Ren Jie; Wang Dingping; etc
关键词:
数值模拟;  搅拌反应器;  湍流模型;  多重参考系法
Keywords:
DOI:
10.3969/j.issn.1671-6833.2006.02.013
文献标志码:
A
摘要:
使用数值模拟的方法研究了一种搅拌反应器的流场特点,采用k-ε两方程湍流模型分析流场,采用多重参考系法处理搅拌桨区域.结果显示:改进的弧形叶桨形成的流场具有典型的径向流特点,而且轴向流动有所加强;标准k-ε模型和RNG k-ε模型均能较准确地预测搅拌槽内轴向的最大速率,但RNG k-ε模型所得结果更为准确;搅拌槽内的湍流能量主要产生于桨叶周边区域和槽近壁区域;但是桨叶下方区域受循环流动的影响比较弱,而且k值比较小,应该使桨叶更接近槽底部,或者采用带45°倾角的折叶桨,从而加强桨叶的轴向输送能力,改善混合效果.
Abstract:
The flow field characteristics of a stirred reactor were studied by numerical simulation, the K-ε two-equation turbulence model was used to analyze the flow field, and the multiple reference frame method was used to treat the stirring paddle area. The results show that the flow field formed by the improved arc blade has typical radial flow characteristics, and the axial flow is strengthened. Both the standard k-ε model and the RNG k-ε model can predict the maximum axial rate in the stirring tank more accurately, but the results obtained by the RNG k-ε model are more accurate. The turbulent energy in the stirring tank is mainly generated in the area around the blade and the near wall of the tank. However, the area below the blade is weakly affected by the circulating flow, and the K value is relatively small, so the blade should be closer to the bottom of the groove, or a folding blade with an inclination angle of 45° should be used, so as to strengthen the axial conveying capacity of the blade and improve the mixing effect.

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更新日期/Last Update: 1900-01-01