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壁面带微结构管道内Cassie状态稳定性的实验研究
Alternative TitleExperimental study of cassie state stability inside a microchannel with microstructured surface
孙树伟; 郑旭; 孔高攀; 李战华
Source Publication实验流体力学
2013-06-15
Volume27Issue:3Pages:1-6
ISSN1672-9897
Abstract保持液体在微结构表面处于Cassie状态,是流动减阻的关键。首先利用MicroPTV分别测量了带微结构侧壁处于Cassie和Wenzel状态下的流场速度,表明Cassie状态下近壁速度提高至光滑表面的1.6倍,而Wenzel状态下近壁速度将减小。通过精细控制微管道的驱动压强,观察了液体在近壁由Cassie向Wenzel状态的转变,并测出C/W转变的临界压强值Δp_(cr)约10.9kPa,与Laplace理论预测值10.15kPa基本相符。考虑到Cassie状态失稳也会发生在液体进样过程中,实验还观察了微结构角点对液体进样的"锚定"作用,并初步分析了液体进样中自由液面在微结构表面保持Cassie状态的条件。
Keyword减阻 微结构 锚定 临界压强 Microptv
Subject Area流体力学
URL查看原文
Indexed ByCSCD
Language中文
Funding Organization国家自然基金(10872203);中科院重要方向性项目(CASKJCX2-YW-H18)资助
CSCD IDCSCD:4875160
DepartmentLNM微纳米流体力学
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/47350
Collection非线性力学国家重点实验室
Corresponding Author孙树伟
Recommended Citation
GB/T 7714
孙树伟,郑旭,孔高攀,等. 壁面带微结构管道内Cassie状态稳定性的实验研究[J]. 实验流体力学,2013,27(3):1-6.
APA 孙树伟,郑旭,孔高攀,&李战华.(2013).壁面带微结构管道内Cassie状态稳定性的实验研究.实验流体力学,27(3),1-6.
MLA 孙树伟,et al."壁面带微结构管道内Cassie状态稳定性的实验研究".实验流体力学 27.3(2013):1-6.
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