Using Available Volume to Predict Fluid Diffusivity in Random Media

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We propose a simple equation for predicting self-diffusivity of fluids embedded in random matrices of identical, but dynamically frozen, particles (i.e., quenched-annealed systems). The only nontrivial input is the volume available to mobile particles, which also can be predicted for two common matrix types that reflect equilibrium and non-equilibrium fluid structures. The proposed equation can account for the large differences in mobility exhibited by quenched-annealed systems with indistinguishable static pair correlations, illustrating the key role that available volume plays in transport.
to appear in Physical Review E (12 pages, 4 figures)

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Statistical Mechanics, Materials Science

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http://salesiana.dossiersoluciones.com/handle/123456789/117334

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0610058
 http://arxiv.org/abs/cond-mat/0610058
 Phys. Rev. E 74, 040102 (2006).
 doi:10.1103/PhysRevE.74.040102

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arXiv