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Evaluation of electro-osmotic pumping effect on microporous media flow

Li, Bo, Zhou, W.N., Yan, Y.Y., Tian, C. (2013) Evaluation of electro-osmotic pumping effect on microporous media flow. Applied Thermal Engineering, 60 (1-2). pp. 449-455. ISSN 1359-4311. (doi:10.1016/j.applthermaleng.2012.09.014) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:87901)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided.
Official URL:
https://doi.org/10.1016/j.applthermaleng.2012.09.0...

Abstract

In this paper, the electro-osmotic flow (EOF) in micro-porous media is investigated regarding to the flow rate caused by the combined effect of electro-osmosis force and the gravitational force. It is noticeable that the actual electro-osmosis pumping force can be achieved at flow rate of 10 μL/min in our designed system. With a constant external DC electric field supplied, in which the external electric field exerts the same effect of voltage density on the whole particle interface, the flow resistance inside the pores deceases when water entering into the electro-osmosis pumping section. Moreover, the mass flow rate by the effect of electro-osmosis pumping can be achieved at 1.49 × 10−4 g/s under 5 V DC supply. To simplify the practical flow pattern in the micro-porous media, a specific micro-channel is assumed with a compact spherical stacking-up model. To simulate this geometrical model, a modified lattice Boltzmann method is set up in order to form the electro-osmotic flow of a practical problem from our experiment. The numerical results are obtained and analysed for fitting the present model with the micro-porous media. Both the experimental and numerical results have provided some useful instructions of electro-osmosis performance for designing micro-porous channels in such as filtering the compounds of drug delivery, particle purification and liquid separation applications etc.

Item Type: Article
DOI/Identification number: 10.1016/j.applthermaleng.2012.09.014
Uncontrolled keywords: Micro-porous flow; Electro-osmosis pumping; Numerical simulation; Lattice Boltzmann method
Subjects: T Technology > TJ Mechanical engineering and machinery > Control engineering
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Engineering and Digital Arts
Depositing User: Amy Boaler
Date Deposited: 04 May 2021 14:10 UTC
Last Modified: 16 Nov 2021 10:27 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/87901 (The current URI for this page, for reference purposes)

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