Simulation of fluid slip at 3D hydrophobic microchannel walls by the lattice Boltzmann method

被引：72

作者：

Zhu, LD ^{[1
]}

Tretheway, D

Petzold, L

Meinhart, C

机构：

[1] Univ Calif Santa Barbara, Dept Comp Sci, Santa Barbara, CA 93106 USA

[2] Univ Calif Santa Barbara, Dept Mech & Environm Engn, Santa Barbara, CA 93106 USA

来源：

JOURNAL OF COMPUTATIONAL PHYSICS | 2005年 / 202卷 / 01期

基金：

美国国家科学基金会;

关键词：

fluid slip; slip boundary condition; hydrophobicity; microfluidic; lattice Boltzmann method;

D O I：

10.1016/j.jcp.2004.07.004

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Fluid slip along hydrophobic microchannel walls has been observed experimentally by Tretheway and Meinhart [Phys. Fluids, 14 (3) (2002) L9]. In this paper, we show how fluid slip can be modeled by the lattice Boltzmann method and investigate a proposed mechanism for the apparent fluid slip [Phys. Fluids (2003)]. By applying an exponentially decaying hydrophobic repulsive force of 4 x 10(-3) dyn/cm(3) with a decay length of 6.5 nm, an effective fluid slip of 9% of the main stream velocity is obtained. The result is consistent with experimental mu-PIV data and with the proposed mechanism. (C) 2004 Elsevier Inc. All rights reserved.

引用

页码：181 / 195

页数：15

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