A note on the effective slip properties for microchannel flows with ultrahydrophobic surfaces

被引：196
作者：
Sbragaglia, M.
Prosperetti, A.
机构：
[1] Univ Twente, IMPACT, Fac Sci Appl, NL-7500 AE Enschede, Netherlands
[2] Univ Twente, Burgerscentrum, NL-7500 AE Enschede, Netherlands
[3] Johns Hopkins Univ, Dept Mech Engn, Baltimore, MD 21218 USA
来源：
PHYSICS OF FLUIDS | 2007年 / 19卷 / 04期
关键词：
D O I：
10.1063/1.2716438
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
A type of superhydrophobic surface consists of a solid plane boundary with an array of grooves which, due to the effect of surface tension, prevent a complete wetting of the wall. The effect is greatest when the grooves are aligned with the flow. The pressure difference between the liquid and the gas in the grooves causes a curvature of the liquid surface resisted by surface tension. The effects of this surface deformation are studied in this paper. The corrections to the effective slip length produced by the curvature are analyzed theoretically and a comparison with available data and related mathematical models is presented. (c) 2007 American Inst of Phys.
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页数：8
相关论文
共 23 条
[1]   Large slip effect at a nonwetting fluid-solid interface [J].
Barrat, JL ;
Bocquet, L .
PHYSICAL REVIEW LETTERS, 1999, 82 (23) :4671-4674
[2]   Mesoscopic modelling of heterogeneous boundary conditions for microchannel flows [J].
Benzi, R ;
Biferale, L ;
Sbragaglia, M ;
Succi, S ;
Toschi, F .
JOURNAL OF FLUID MECHANICS, 2006, 548 :257-280
[3]   Pearl drops [J].
Bico, J ;
Marzolin, C ;
Quéré, D .
EUROPHYSICS LETTERS, 1999, 47 (02) :220-226
[4]   Fluid flow through nanometer-scale channels [J].
Cheng, JT ;
Giordano, N .
PHYSICAL REVIEW E, 2002, 65 (03) :1-031206
[5]   Large slip of aqueous liquid flow over a nanoengineered superhydrophobic surface - art. no. 066001 [J].
Choi, CH ;
Kim, CJ .
PHYSICAL REVIEW LETTERS, 2006, 96 (06)
[6]   Dynamics of simple liquids at heterogeneous surfaces:: Molecular-dynamics simulations and hydrodynamic description [J].
Cottin-Bizonne, C ;
Barentin, C ;
Charlaix, É ;
Bocquet, L ;
Barrat, JL .
EUROPEAN PHYSICAL JOURNAL E, 2004, 15 (04) :427-438
[7]   Laminar flow in a microchannel with superhydrophobic walls exhibiting transverse ribs [J].
Davies, J. ;
Maynes, D. ;
Webb, B. W. ;
Woolford, B. .
PHYSICS OF FLUIDS, 2006, 18 (08)
[8]  
Gradshteyn I. S., 2000, TABLE INTEGRALS SERI
[9]   Micro-electro-mechanical-systems (MEMS) and fluid flows [J].
Ho, CM ;
Tai, YC .
ANNUAL REVIEW OF FLUID MECHANICS, 1998, 30 :579-612
[10]   Slippage of water past superhydrophobic carbon nanotube forests in microchannels [J].
Joseph, P. ;
Cottin-Bizonne, C. ;
Benoit, J. -M. ;
Ybert, C. ;
Journet, C. ;
Tabeling, P. ;
Bocquet, L. .
PHYSICAL REVIEW LETTERS, 2006, 97 (15)
123