Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 395, Issue -, Pages 277-286Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2012.12.013
Keywords
Electro-osmotic flows; Two-fluid pump; Viscoelastic fluids
Categories
Funding
- FEDER
- Fundacao para a Ciencia e a Tecnologia (FCT) [PTDC/EQU-FTT/113811/2009, SFRH/BPD/75436/2010]
- Fundação para a Ciência e a Tecnologia [PTDC/EQU-FTT/113811/2009] Funding Source: FCT
Ask authors/readers for more resources
This paper presents an analytical model that describes a two-fluid electro-osmotic flow of stratified fluids with Newtonian or viscoelastic rheological behavior. This is the principle of operation of an electro-osmotic two-fluid pump as proposed by Brask et al. [Tech. Proc. Nanotech., 1, 190-193,2003], in which an electrically non-conducting fluid is transported by the interfacial dragging viscous force of a conducting fluid that is driven by electro-osmosis. The electric potential in the conducting fluid and the analytical steady flow solution of the two-fluid electro-osmotic stratified flow in a planar microchannel are presented by assuming a planar interface between the two immiscible fluids with Newtonian or viscoelastic rheological behavior. The effects of fluid rheology, shear viscosity ratio, holdup and interfacial zeta potential are analyzed to show the viability of this technique, where an enhancement of the flow rate is observed as the shear-thinning effects are increased. (C) 2012 Elsevier Inc. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available