Mixing in a T-shaped micromixer at moderate Reynolds numbers

被引：42
|
作者：
Minakov, A. V. [1 ,2 ]
Rudyak, V. Ya. [1 ,3 ]
Gavrilov, A. A. [1 ,2 ]
Dekterev, A. A. [1 ,2 ]
机构：
[1] Kutateladze Inst Thermophys SB RAS, Novosibirsk, Russia
[2] Siberian Fed Univ, Krasnoyarsk, Russia
[3] Novosibirsk State Univ Architecture & Civil Engn, Novosibirsk, Russia
来源：
THERMOPHYSICS AND AEROMECHANICS | 2012年 / 19卷 / 03期
基金：
俄罗斯基础研究基金会;
关键词：
microchannels; micromixers; mixing efficiency; hydrodynamic modelling; slip on walls; Dean vortices; FLOW;
D O I：
10.1134/S0869864312030043
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
In the present work, the regimes of the flow and mixing of fluids in a T-shaped micromixer in the range of the Reynolds numbers from 1 to 1000 are investigated systematically with the aid of numerical modeling. The flow and mixing regimes are shown to alter substantially with increasing Reynolds numbers. Five different flow regimes have been identified in the total. The dependencies of the friction coefficient and mixing efficiency on the Reynolds number are obtained. A sharp increase in the mixing efficiency at a flow transition from the symmetric to asymmetric steady regime is shown. On the other hand, the mixing efficiency slightly drops in the laminar-turbulent transition region. A substantial influence of the slip presence on walls on flow structure in the channel and mixing efficiency has been revealed.
引用
收藏
页码：385 / 395
页数：11
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