TRANSPORT IN CAPILLARY NETWORK MODELS OF POROUS-MEDIA - THEORY AND SIMULATION

DEEPAK, PD and BHATIA, SK (1994) TRANSPORT IN CAPILLARY NETWORK MODELS OF POROUS-MEDIA - THEORY AND SIMULATION. Chemical Engineering Science, 49 2: 245-257. doi:10.1016/0009-2509(94)80042-1


Author DEEPAK, PD
BHATIA, SK
Title TRANSPORT IN CAPILLARY NETWORK MODELS OF POROUS-MEDIA - THEORY AND SIMULATION
Journal name Chemical Engineering Science   Check publisher's open access policy
ISSN 0009-2509
Publication date 1994-01-01
Year available 1994
Sub-type Article (original research)
DOI 10.1016/0009-2509(94)80042-1
Open Access Status Not yet assessed
Volume 49
Issue 2
Start page 245
End page 257
Total pages 13
Place of publication OXFORD
Publisher PERGAMON-ELSEVIER SCIENCE LTD
Language eng
Abstract The recent correlated random walk theory, for transport in random networks, is developed here also for cubic networks. A comparison of correlated random walk theory and effective medium theory predictions for cubic networks with simulation results shows the latter to be more accurate in general. For random networks a hybrid alternative, combining the effective medium and correlated random walk theories, is formulated and found to compare better with simulation results. However, under normal conditions, in which percolation effects are not dominant, the correlated random walk theory is found to be adequate. Under conditions involving positional variations in pore structure, or non-linear field-variable-dependent flux laws, the correlated random walk theory appears as the only analytical alternative. Based on this theory, an accurate semi-empirical expression for the conduction threshold is also developed, suggesting directions for its further development incorporating the considerations of disorder.
Keyword Diffusion-Controlled Reactions
Coefficients
Tortuosity
Reactants
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: WoS Import - Archived
 
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Created: Sun, 12 Nov 2017, 05:20:44 EST