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zeta-potential-distributions
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LBM simulation of electro-osmotic flow (EOF) in nano/micro scales porous media with an inclusive parameters study
, Article ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE) ; Vol. 7 , November , 2014 ; ISBN: 9780791849545 ; Lee, E. S ; Salimi, M. R ; Sharif University of Technology
Abstract
In this paper, we present our results about simulation of 2D-EOF in Nano/Micro scales porous media using lattice Boltzmann method (LBM) in micro-channel for EOF. The high efficient numerical code use strongly high nonlinear Poisson Boltzmann equation to predicate behavior of EOF in complex geometry. The results are developed with precisely investigation of several effective parameters on permeability of EOF, such as geometry (channel height and number and location of charge), external electric field, thickness of Debye length (ionic concentration), and zeta potential. Our results are in excellent agreement with available analytical results. Our results show that for certain external electric...
Numerical simulation of heat transfer in mixed electroosmotic pressure-driven flow in straight microchannels
, Article Journal of Thermal Science and Engineering Applications ; Volume 8, Issue 2 , 2016 ; 19485085 (ISSN) ; Merdasi, A ; Vatankhah, P ; Sharif University of Technology
American Society of Mechanical Engineers (ASME)
2016
Abstract
This paper investigates two-dimensional, time-independent elecroosmotic pressuredriven flow generated by a direct current electric potential with asymmetrical and symmetrical zeta potential distributions along the microchannel walls. Fluid flow through the horizontal microchannel is simulated using a numerical method. Two different cases are proposed to study the effect of electric potential on the flow field. First, negative electric potential is applied on the microchannel walls. In this case, large segments with negative electric potential are initially placed on the first half of the microchannel walls with two different arrangements. Afterward, smaller segments with negative electric...