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Journal of Porous Media
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ISSN Druckformat: 1091-028X
ISSN Online: 1934-0508

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Journal of Porous Media

DOI: 10.1615/JPorMedia.v12.i1.30
pages 29-41

Influence of Geometry on Self-Diffusion of Liquid Molecules in Porous Media in Long Time Regime

V. V. Loskutov
Physics Department, Mari State Pedagogical Institute, Kommunisticheskaya St., 44, Yoshkar-Ola, 424002, Russia
V. A. Sevriugin
Physics Department, Mari State Pedagogical Institute, Kommunisticheskaya St., 44, Yoshkar-Ola, 424002, Russia

ABSTRAKT

Based on the most general concepts of the translation mobility and geometry of a porous medium, an expression for the self-diffusion coefficient of liquid molecules in such a medium in a long time regime is derived. Limit cases when the porous size is much larger than the characteristic geometrical quantities of a liquid molecule are considered. The possibility of pass to small size of the pore is shown. The effective diffusion coefficient dependent on geometry of porous media is obtained.


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