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Effective Diffusivities of Gases in a Reconstructed Porous Body.
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SYSNO ASEP 0091453 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Effective Diffusivities of Gases in a Reconstructed Porous Body. Title Efektivní difusivity plynů v rekonstruovaném pórovitém materiálu. Author(s) Čapek, P. (CZ)
Hejtmánek, Vladimír (UCHP-M) RID, SAI
Brabec, Libor (UFCH-W) RID, ORCID
Zikánová, Arlette (UFCH-W) RID
Kočiřík, Milan (UFCH-W) RID, ORCIDSource Title Book of Abstracts. - - : Norhaven Book, 2007 / Gani R. ; Dam-Johansen K. - ISBN 978-87-91435-56-0 Pages s. 389-390 Number of pages 42 KB s. Action European Congress of Chemical Engineering ECCE-6 Event date 16.09.2007-20.09.2007 VEvent location Copenhagen Country DK - Denmark Event type WRD Language eng - English Country DK - Denmark Keywords stochastic reconstruction ; pore network ; random walk Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects GA203/05/0347 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z40720504 - UCHP-M (2005-2011) AV0Z40400503 - UFCH-W (2005-2011) Annotation Two models of a porous body, a 3D replica obtained by stochastic reconstruction and a random pore network, were evaluated with reference to the effective diffusivity of gases. The stochastic reconstruction technique employs the limited morphological information that was extracted from images of 2D cuts through the porous medium. The pore network was derived in such a way that the total porosity, pore-size function, mean coordination number, and mercury intrusion curve agreed well with experiment. A simulator of steady diffusion flow in the pore network slightly overestimated the effective diffusivity while the direct calculation of the effective diffusivity by exploiting random-walk simulation in the 3D re Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2008
Number of the records: 1