典型被动微混合器对雷诺数变化的敏感度研究

发布时间：2018-01-13 07:44

本文关键词：典型被动微混合器对雷诺数变化的敏感度研究　出处：《化学工程》2016年06期 　论文类型：期刊论文

【摘要】：分析了几种典型被动式微混合器结构对雷诺数变化所呈现出混合效果的改变程度。首先利用COMSOL Multiphsics软件对4种结构单元的混合效果进行了数值分析;其次把数值模拟结果进行计算整理;最后将计算结果与文献中的结论进行对比验证。从计算结果中可以看出随雷诺数的增加3D式混合单元的混合强度呈比较明显的下降趋势;T型和阻块涡流式单元在雷诺数区间(0.01—1 000)的混合强度表现较为平稳;分合式微混合器在雷诺数区间(0.01—1 000)的混合强度波动不大。作为参考因素,以上结果可以应用于微混合器的结构设计及实际生产当中,对微混合器的发展提供理论基础。
[Abstract]:In this paper, the mixing effect of several typical passive micromixers on Reynolds number is analyzed. Firstly, COMSOL is used to analyze the mixing effect of several typical passive micromixers. The mixing effect of four kinds of structural elements is numerically analyzed by Multiphsics software. Secondly, the numerical simulation results are calculated and sorted out. Finally, the calculated results are compared with the conclusions in the literature. It can be seen from the results that the mixing strength of 3D mixing units decreases with the increase of Reynolds number. The mixing strength of T-type and block eddy current elements is steady in Reynolds number range of 0.01-1000). As a reference factor, the above results can be applied to the structural design and practical production of the micro mixer. It provides a theoretical basis for the development of micro mixer.
【作者单位】：浙江工业大学机械工程学院;
【基金】：国家自然科学基金资助项目(51175472)
【分类号】：TQ051.71
【正文快照】： 微流控技术随着微机电系统和纳米材料的迅速发展而逐渐兴起,作为一种多学科交叉研究领域引起了广泛重视[1]。基于化学分析、生物检测和环境监测等多方面的应用需求[2],微混合器的概念从微流控技术中脱颖而出,微混合是指在微尺度结构下使2种或2种以上的流体达到均匀混合的过程,

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