Pore Structure and Effective Permeability of Metallic Filters

0380640 - ÚCHP 2013 HU eng C - Conference Paper (international conference)
Hejtmánek, Vladimír - Čapek, P. - Veselý, M.
Pore Structure and Effective Permeability of Metallic Filters.
Abstracts Book. Tampa: NANOSMAT, 2012 - (Chipara, M.; Haynie, D.; Stanishevsky, A.), 229* ISBN N.
[International Conference on Mathematical Modeling in Physical Sciences IC-MSQUARE 2012. Budapest (HU), 03.09.2012-07.09.2012]
R&D Projects: GA ČR(CZ) GAP204/11/1206
Institutional support: RVO:67985858
Keywords : porous media * stochastic reconstruction * effective permeability
Subject RIV: CF - Physical ; Theoretical Chemistry

The microstructures of two metallic filters were reconstructed using a stochastic reconstruction method based on simulated annealing. The following microstructural descriptors were included in the description of the real microstructures: the two-point probability function, the lineal-path functions for the void and solid phases, i.e. simulated annealing was constrained by all low-order statistical measures that were accessible through the analysis of images of polished sections. The void phase created one large cluster and a few small clusters representing the isolated porosity. Effective permeability of the replicas was estimated by solving the Stokes equation for creeping flow of an incompressible liquid in pore space. Calculated permeability values matched well their experimental counterparts.
Permanent Link: http://hdl.handle.net/11104/0211295