NDLI: Transport Properties of Stochastically Reconstructed Porous Media with Improved Pore Connectivity

Content Provider	Springer Nature Link
Author	Čapek, P. Hejtmánek, V. Kolafa, J. Brabec, L.
Copyright Year	2011
Abstract	Results from stochastic reconstruction of porous solids and from a direct comparison of calculated and experimental effective transport properties are presented. Eight porous solids of different microstructures were selected to evaluate the performance of two reconstruction methods based on simulated annealing. The common method was constrained by the two-point probability function and the lineal-path function for the void phase, whilst the constraints of our new method were further supplemented by the lineal-path function for the solid phase and by two adjustable parameters. The new method was capable of reproducing the void and solid phases as large clusters spanning the entire replicas. Non-percolating clusters formed minor volume fractions of both phases. Although the common method reproduced the microstructures quite well, their pore space connectivity was significantly poorer. Therefore, effective permeability, effective ordinary diffusivity, and effective Knudsen diffusivity calculated for the replicas obtained using the new method were always much greater than the same quantities related to the common reconstruction method. For most of the porous solids, values of the effective properties calculated on the basis of the new reconstruction method better matched their experimental counterparts than the corresponding values derived from the microstructures reproduced using the common reconstruction method.
Starting Page	87
Ending Page	106
Page Count	20
File Format	PDF
ISSN	01693913
Journal	Transport in Porous Media
Volume Number	88
Issue Number	1
e-ISSN	15731634
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-02-04
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Stochastic reconstruction Simulated annealing Pore connectivity Viscous flow Ordinary diffusion Knudsen diffusion Hydrogeology Classical Continuum Physics Industrial Chemistry/Chemical Engineering Civil Engineering Geotechnical Engineering
Content Type	Text
Resource Type	Article
Subject	Catalysis

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