Influence of imbedded particles on steady-state diffusion
- 1 January 1974
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics
- Vol. 70, 1259-1273
- https://doi.org/10.1039/f29747001259
Abstract
The two-dimensional diffusion behaviour of a composite sheet is studied using numerical techniques. The effective diffusion coefficient is obtained for long particles of a dispersed phase arranged on a regular lattice in a continuum. Typical concentration and flow patterns are presented. The effects of the shape, size and position of the dispersed phase are investigated and the acceptability of existing approximate models is assessed. A new approximate formula is proposed.Keywords
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