Electrokinetic flows through a parallel-plate channel with slipping stripes on walls

Content Provider	Semantic Scholar
Author	Ng, Chiu-On Chu, Henry C. W.
Copyright Year	2011
Abstract	Longitudinal and transverse electrohydrodynamic flows through a plane channel, of which the walls are micropatterned with a periodic array of stripes, are considered. One unit of wall pattern consists of a slipping stripe and a non-slipping stripe, each with a distinct zeta potential. The problems are solved by a semi-analytical method, where the basic solutions satisfying the electrohydrodynamic equations are expressed by eigenfunction expansions, and the coefficients are determined numerically by point collocation satisfying the mixed stick-slip boundary conditions. In the regime of linear response, the Onsager relations for the fluid and current fluxes are deduced as linear functions of the hydrodynamic and electric forcings. The phenomenological coefficients are explicitly expressed as functions of the channel height, the Debye parameter, the slipping area fraction of the wall, the intrinsic slip length, and the zeta potentials. Attention is paid to some particular kinds of patterns, with a view to re...
Starting Page	102002
Ending Page	102002
Page Count	1
File Format	PDF HTM / HTML
DOI	10.1063/1.3647582
Volume Number	23
Alternate Webpage(s)	http://hub.hku.hk/bitstream/10722/142375/1/content.pdf
Alternate Webpage(s)	https://doi.org/10.1063/1.3647582
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article