A Relatioship between Capillary Pressure and Permeability as Revealed by a Pore Network Model

0104910 - UCHP-M 20040164 RIV CZ eng C - Conference Paper (international conference)
Čapek, P. - Hejtmánek, Vladimír
A Relatioship between Capillary Pressure and Permeability as Revealed by a Pore Network Model.
[Vztah mezi kapilárním tlakem a permeabilitou studovaný pomocí modelu trojrozměrné sítě pórů.]
Summaries 2. Praha: Process Engineering Publisher, 2004, s. 857. ISBN 80-86059-40-5.
[International Congress of Chemical and Process Engineering CHISA 2004 /16./. Praha (CZ), 22.08.2004-26.08.2004]
Institutional research plan: CEZ:AV0Z4072921
Keywords : pore network model * capillary pressure curve * slip flow
Subject RIV: CF - Physical ; Theoretical Chemistry

The results of this study clearly indicate that, in the network representation of a porous medium, the cross-sectional shape of throuds, the chamber-to throut aspect ratio, and spatial correlations between chambers and adjacent throats have the significant unfluence on permeability and mercury-air displacement. Since the critical capillary pressure is solely determined by the throat size and shape in this study, the chamber-to throat aspect ratio is the only pore structure parameter, which does not have any influence on the capillary pressure curves at all

Byl studován vliv průřezu hrdla, poměru komora-hrdlo a prostorové korelace síťových objektů (příslušných komor a hrdel) ve 3D síťovém modelu na permeabilitu plynu v pórovitém materiálu a na intruzní křivku rtuťové pórometrie. Zatímco kritický kapilární tlak je určen velikostí hrdel a jejich tvarem, poměr komora-hrdlo je pouze strukturním parametrem, který nemá vliv na tvar intruzní křivku rtuťové pórometrie
Permanent Link: http://hdl.handle.net/11104/0012169