Document Detail


Pattern formation in reverse filtration combustion.
MedLine Citation:
PMID:  16241542     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Using a pore-network simulator we study pattern formation in reverse filtration combustion in porous media. The two-dimensional pore network includes all relevant pore-level mechanisms, including heat transfer through the pore space and the solid matrix, fluid and mass transfer through the pore space, and reaction kinetics of a solid fuel embedded in the pores. Both adiabatic and nonadiabatic cases are considered, the latter modeled with the inclusion of heat losses from the pore network to the ambient. The simulation results show the development of unstable, fingered patterns of the burned fuel, similar to previously reported in the literature in the related problem of reverse combustion in a Hele-Shaw cell. We study the sensitivity of the patterns obtained on a number of parameters, including the Peclet number. The results on finger spacing and finger width are analyzed in terms of a selection principle, similar to that used in the theory for unstable Laplacian growth.
Authors:
Chuan Lu; Yannis C Yortsos
Publication Detail:
Type:  Journal Article     Date:  2005-09-01
Journal Detail:
Title:  Physical review. E, Statistical, nonlinear, and soft matter physics     Volume:  72     ISSN:  1539-3755     ISO Abbreviation:  Phys Rev E Stat Nonlin Soft Matter Phys     Publication Date:  2005 Sep 
Date Detail:
Created Date:  2005-10-24     Completed Date:  2006-02-28     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101136452     Medline TA:  Phys Rev E Stat Nonlin Soft Matter Phys     Country:  United States    
Other Details:
Languages:  eng     Pagination:  036201     Citation Subset:  -    
Affiliation:
Department of Chemical Engineering, University of Southern California, Los Angeles, California 90089-1211, USA.
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