Abstract
Experimental results on mass transfer within a thin porous layer saturated with ferrofluid are outlined in this paper. From the analysis of particle concentration distribution across the layer it is shown that both the mass diffusion and the Soret coefficients of nanoparticles are remarkably less than those measured in free fluid. The particle transport coefficient changes due to an external uniform magnetic field qualitatively well agree with the predictions of existing theoretical research. The magnetic field that is oriented transversely to the porous layer causes an increase in the diffusion coefficient and a decrease in the Soret coefficient whilst the longitudinal field causes a reduction of the mass diffusion and an intensification of the particle thermodiffusion.
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Contribution to the Topical Issue “Thermal nonequilibrium phenomena in multi-component fluids” edited by Fabrizio Croccolo and Henri Bataller.
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Sints, V., Blums, E., Maiorov, M. et al. Diffusive and thermodiffusive transfer of magnetic nanoparticles in porous media. Eur. Phys. J. E 38, 35 (2015). https://doi.org/10.1140/epje/i2015-15035-2
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DOI: https://doi.org/10.1140/epje/i2015-15035-2