Strategy for Predicting Effective Transport Properties of Complex Porous Structures

0357570 - ÚCHP 2011 RIV GB eng J - Journal Article
Salejová, G. - Grof, Z. - Šolcová, Olga - Schneider, Petr - Kosek, J.
Strategy for Predicting Effective Transport Properties of Complex Porous Structures.
Computers and Chemical Engineering. Roč. 35, č. 2 (2011), s. 200-211. ISSN 0098-1354. E-ISSN 1873-4375
Institutional research plan: CEZ:AV0Z40720504
Keywords : porous media * pore space reconstruction * effective diffusivity
Subject RIV: CI - Industrial Chemistry, Chemical Engineering
Impact factor: 2.320, year: 2011

Here we demonstrate the reconstruction of porous alumina catalyst carrier with bimodal pore size distribution. Multi-scale concept is employed for the computation of effective diffusivity and permeability of reconstructed porous media and calculated effective transport properties are compared with transport parameters experimentally determined in Graham diffusion and simple permeation cell. The limitations of current state-of-the-art reconstruction techniques for porous media with broad pore size distribution are discussed. We show that the contribution of nano-pores towards the total diffusion flux is significant and cannot be neglected, but it is reasonable to neglect the contribution of nano-pores towards the sample permeability.
Permanent Link: http://hdl.handle.net/11104/0195815