An Ohm’s law analogy for the effective diffusivity of composite media

J. Alvarez-Ramirez, F.J. Valdes-Parada and C. Ibarra-Valdez

Physica A: Statistical Mechanics and its Applications, 2016, vol. 447, issue C, 141-148

Abstract: The aim of this work is to obtain an equation for the effective diffusivity of permeable composite media based on an analogy with Ohm’s law of electricity. Here, particles are transported across a composite medium, which is seen as an arrangement of series and parallel resistances. Comparison with simulations of Brownian particles traveling through the successive walls of the medium showed good agreement for moderate inclusion-to-continuous medium diffusivity ratio.

Keywords: Effective diffusivity; Permeable composite; Ohm’s law; Brownian particle simulations (search for similar items in EconPapers)
Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:447:y:2016:i:c:p:141-148

DOI: 10.1016/j.physa.2015.12.021

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