Mixing in the offstream of a microchannel system

被引:49
作者
Ehlers, S
Elgeti, K
Menzel, T
Wiessmeier, G
机构
[1] Bayer AG, PU, F VF, D-41538 Dormagen, Germany
[2] Univ Cologne, Inst Tech Chem, D-50979 Cologne, Germany
[3] Bayer AG, CH P ZW 3AS, D-51368 Leverkusen, Germany
[4] Bayer AG, ZT TE 3 2, D-51368 Leverkusen, Germany
关键词
micro-mixers; micromixing; CFD;
D O I
10.1016/S0255-2701(99)00078-1
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The performance of different micro-mixers has been examined experimentally and by the use of computational fluid dynamics (CFD). The development and occurance of turbulence is very important for good mixing quality in the micro-mixers that were examined. Due to the small diameter of the microchannels the batchelor length is reached much faster and there are less inhomogenities in concentration so that side reactions are reduced effectively. Furthermore, it could be shown that the mixing performance of micro-mixers could be simulated in good agreement with the experimental results using existing turbulence models. On the basis of CFD the influence of the geometrical parameters of the micro-mixers were investigated. These results show that the mixing behavior is mainly influenced by the channel height and direction. (C) 2000 Elsevier Science S.A. All rights reserved.
引用
收藏
页码:291 / 298
页数:8
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