Two dimensional numerical study on mixing enhancement in micro-channel due to induced charge electrophoresis

[Display omitted] •Investigation of parameters influencing formation of micro-vortices around conducting particle.•Study of conducting particle’s role in mixing efficiency in micro-channels.•A comprehensive performance study of electrokinetic micro-mixer. Mixing different species to produce a homoge...

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Bibliographic Details
Published in:Chemical engineering and processing 2017-10, Vol.120, p.241-250
Main Authors: Kazemi, S., Nourian, V., Nobari, M.R.H., Movahed, S.
Format: Article
Language:English
Subjects:
Electrokinetics
Electrophoresis
Induced charge
Micro-mixer
Thin electric double layer
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Summary:[Display omitted] •Investigation of parameters influencing formation of micro-vortices around conducting particle.•Study of conducting particle’s role in mixing efficiency in micro-channels.•A comprehensive performance study of electrokinetic micro-mixer. Mixing different species to produce a homogeneous solution is of great interest, affecting the performance of lab-on-a-Chip (LOC) devices. Because of the laminar characteristic of the flow field in microchannels, the LOC devices usually suffer from poor mixing efficiency. This study numerically investigates the enhancement of mixing efficiency in a microchannel using a conductive micro-particle. For this, the governing equations of the induced-charged electrokinetics based on the thin EDL assumption are solved by the finite volume method to provide a comprehensive parametric study on the mixing process and its efficiency taking into account the physical parameters such as the particle size, applied electric field, electric potential and branching inlet.
ISSN:0255-2701
1873-3204
DOI:10.1016/j.cep.2017.07.007