Diffusion in a periodic porous medium with surface relaxation

Pabitra N. Sen

Physica A: Statistical Mechanics and its Applications, 1994, vol. 211, issue 4, 387-392

Abstract: Analytic results for periodic structures with partially absorbing boundary conditions are used to illustrate the difference between the diffusion coefficients for the cases when the surface relaxativity ϱ = 0 and ϱ ≠ 0. The macroscopic diffusion coefficient, obtained in an ideal NMR experiment in the long time limit, equals that derived from the electrical conductivity only when ϱ = 0 and the surface electrical conductivity vanishes.

Date: 1994
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:211:y:1994:i:4:p:387-392

DOI: 10.1016/0378-4371(94)00134-0

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