Finite element modelling of electro-osmotic flow in porous media
Simona Di Fraia  2, 1, *@  , Perumal Nithiarasu  2@  , Nicola Massarotti  1@  
2 : Zienkiewicz Centre for Computational Engineering, College of Engineering, Swansea University  (ZCCE)  -  Website
Bay Campus, Fabian Way, Swansea, SA1 8EN -  United Kingdom
1 : Dipartimento di Ingegneria, Università degli Studi di Napoli “Parthenope”,  -  Website
Centro Direzionale, Isola C4,80143 Napoli -  Italy
* : Corresponding author

Electro-osmotic flow (EOF) in microchannels with and without porous media has been analysed in this work. The effect of the charge of solid particles on EOF has been taken into account by introducing an equivalent reference length into the equation that governs the static potential distribution. External electric field and internal potential have been determined by solving the Laplace and Poisson-Boltzmann equations, respectively. Their effect has been introduced into the Navier-Stokes equations to simulate fluid flow and heat transfer due to electro-osmosis. The set of equations that describes the problem has been solved using the finite element method combined with the characteristic-based split algorithm.

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