摘要
随着微机电系统的不断发展,作为微机电系统的一个重要的分支,微流体系统越来越引起许多科学家的重视和研究,但是微流体系统不是简单的在尺度上面的减小,而是随着尺度的减小,流动的特性也会发生变化。在宏观中可以忽略的因素在微观中可能会占主导作用。在本文章中,主要是实验的形式对微观流动特性进行了研究,测试液体是两种介质(水和硅油),采用的不同的微管内径13μm,20μm,50μm和100μm,长度为40mm。实验结果表明,在此实验条件下,液体的流动压力和流量仍呈现线性关系,与宏观大管道的理论预想基本相同,宏观管道内采用的N-S方程在此实验条件仍可适用。
With the development of MEMS, Microfluidics system which is on e of the most important branches of MEMS have attracted more and more interests of scientific researchers. Microfluidics system is not just simply decrease in sca le, but flow characteristics would change as the scale decreases. Some factors t hat maybe ignored in macro theory may occupy leading position in microfluidics. In this paper, experiment was carried out to investigate the flow characteristic s, two kinds of liquid (distilled water and silicon oil) was tested in microchan nels with diameters ranging from 13 to 100μ m, test length was 40mm. The result s showed that under this experimental conditions, the correlation between flow r ate and pressure drop is linear, and in relative agreement with the prediction o f macro theory based on larger channels. N- S equation still acts well in this experiment.
出处
《机械设计与制造》
北大核心
2005年第7期112-113,共2页
Machinery Design & Manufacture
基金
江苏大学基金资助(1391400001)
新世纪优秀人才资助计划项目
关键词
液体
微流动系统
流动特性
Liquid
Microfluidics
Flow characteristic
