Transient two-liquid electroosmotic flow with electric charges at the interface

被引：67

作者：

Gao, YD ^{[1
]}

Wong, TN ^{[1
]}

Yang, C ^{[1
]}

Ooi, KT ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2005年 / 266卷 / 1-3期

关键词：

two-liquid stratified flow; electric double layer; electroosrnotic pump; Laplace transform; Gaver-Stehfest method;

D O I：

10.1016/j.colsurfa.2005.05.068

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The transient aspects of two-liquid electroosmotic (EO) flow are analytically studied, in which a low EO mobility liquid is delivered by the interfacial viscous force of a high EO mobility liquid driven by electroosmosis. The flow of the two liquids depends on the coupling effects between them, which involve the electrokinetic effect. The model accounts for surface charges at the liquid-liquid interface. Due to the presence of the surface charges, the shear stress is not continuous at the interface. Analytical solution of such transient two-liquid flow in rectangular channel is presented by Laplace transform method. The effects of dynamic viscosity ratio, interface potential, kinematic viscosity ratio and parameter of the electric double layer are analyzed to characterize the flow. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：117 / 128

页数：12

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