Flow and slip transition in nanochannels

被引：34
|
作者：
Li, Long [1 ]
Mo, Jingwen [1 ]
Li, Zhigang [1 ]
机构：
[1] Hong Kong Univ Sci & Technol, Dept Mech & Aerosp Engn, Kowloon, Hong Kong, Peoples R China
来源：
PHYSICAL REVIEW E | 2014年 / 90卷 / 03期
关键词：
BOUNDARY-CONDITION; LIQUID FLOW; INTERFACES; SURFACES; VISCOSITY; FRICTION; SINGLE; WATER;
D O I：
10.1103/PhysRevE.90.033003
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
We experimentally investigate the Poiseuille flows in nanochannels. It is found that the flow rate undergoes a transition between two linear regimes as the shear rate is varied. The transition indicates that the nonslip boundary condition is valid at low shear rate. When the shear rate is larger than a critical value, slip takes place and the slip length increases linearly with increasing shear rate before approaching a constant value. The results reported in this work can help advance the understanding of flow slip in nanochannels.
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页数：6
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