Micro-channel shapes and obstacle layout in passive micromixers

CHEN Xue-ye; LI Tie-chuan

doi:10.3788/OPE.20152313.0403

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Micro-channel shapes and obstacle layout in passive micromixers

更新时间：2020-08-13

- Micro-channel shapes and obstacle layout in passive micromixers
- Optics and Precision Engineering Vol. 23, Issue 10z, Pages: 403-409(2015)
- 作者机构：
  
  辽宁工业大学机械工程与自动化学院,辽宁锦州,121001
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20152313.0403
  CLC： TH703
- Received：15 April 2015，
  
  Revised：20 May 2015，
  
  Published：14 November 2015
- 稿件说明：
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陈雪叶, 李铁川,. 被动式微混合器微通道外形及障碍物布局[J]. 光学精密工程, 2015,23(10z): 403-409

CHEN Xue-ye, LI Tie-chuan,. Micro-channel shapes and obstacle layout in passive micromixers[J]. Editorial Office of Optics and Precision Engineering, 2015,23(10z): 403-409
陈雪叶, 李铁川,. 被动式微混合器微通道外形及障碍物布局[J]. 光学精密工程, 2015,23(10z): 403-409 DOI： 10.3788/OPE.20152313.0403.

CHEN Xue-ye, LI Tie-chuan,. Micro-channel shapes and obstacle layout in passive micromixers[J]. Editorial Office of Optics and Precision Engineering, 2015,23(10z): 403-409 DOI： 10.3788/OPE.20152313.0403.

摘要

开展了通过优化微通道形状和障碍物布局来增强被动式微混合器混合效果的研究。研究显示

改变微通道形状和设置障碍物

从而提高被动式微混合器中的混沌对流

是提高样品混合效率的简单有效方法。对6种不同形状的微通道完成了有限元分析仿真与数值仿真。结果显示:不同结构按混合效率由高到低依次排列为:方波型

正弦型

折线型

T型

口型

连环型。最后

在最好的微通道外形-方波型微通道内对比了障碍物布局对微混合器混合效率的影响

得到了非对称多组障碍物布局的最优结构

此结构可适用

数为750以下的流体。仿真结果表明

微通道形状和障碍布局的优化设计可以有效提高被动式微混合器的混合效率。

Abstract

This paper focuses on optimizing the micro-channel shapes and obstacle layouts in the micro-channel to enhance the mixing effect of a passive micromixers. Experiments show that changing the channel shape and setting obstacles can enhance chaotic convection in the passive mixer

and they are simple methods to improve the sample mixing efficiency. Six kinds of channel shapes and two kinds of obstacle layouts have completed and simulated. The mixing efficiency in sequence is:the square-wave

the multi-wave

the zigzag

the T-shape

the mouth shape

the loop. Finally

the obstacle layout in the best microchannel-the square-wave microchannel is compared and its effect on the mixing effeciency of the mixer is studied. So the asymmetry layout of obstacles has been obtained

which can be applied to the fluid mixing at

less than 750. Simulation results show that optimized design of the channel shape and obstacle layout can improve effectively sample mixing efficiency in the passive micromixer. It is verified that the optimization of the structure is an effective design of microfluidic devices.

关键词

Keywords

references

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Related Institution

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