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On the stability of high Lewis number combustion fronts

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Ghazaryan, Anna and Jones, C. K. R. T. (Christopher K. R. T.) (2009) On the stability of high Lewis number combustion fronts. Discrete and Continuous Dynamical Systems, Vol.24 (No.3 Sp. Iss. SI). pp. 809-826. doi:10.3934/dcds.2009.24.809

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Official URL: http://dx.doi.org/10.3934/dcds.2009.24.809

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Abstract

We consider wave fronts that arise in a mathematical model for high Lewis number combustion processes. An efficient method for the proof of the existence and uniqueness of combustion fronts is provided by geometric singular perturbation theory. The fronts supported by the model with very large Lewis numbers are small perturbations of the front supported by the model with infinite Lewis number. The question of stability for the fronts is more complicated. Besides discrete spectrum, the system possess essential spectrum up to the imaginary axis. We show how a geometric approach which involves construction of the Stability Index Bundles can be used to relate the spectral stability of wavefronts with high Lewis numbers to the spectral stability of the front in the case of infinite Lewis number. We discuss the implication for nonlinear stability of fronts with high Lewis numbers. This work builds on the ideas developed by Gardner and Jones [12] and generalized in the papers by Bates, Fife, Gardner and Jones [3, 4].

Item Type: Journal Article
Subjects: Q Science > QA Mathematics
Divisions: Faculty of Science > Mathematics
Journal or Publication Title: Discrete and Continuous Dynamical Systems
Publisher: American Institute of Mathematical Sciences
ISSN: 1078-0947
Official Date: July 2009
Dates:
DateEvent
July 2009Published
Volume: Vol.24
Number: No.3 Sp. Iss. SI
Number of Pages: 18
Page Range: pp. 809-826
DOI: 10.3934/dcds.2009.24.809
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: National Science Foundation (U.S.) (NSF)
Grant number: DMS-0410267

Data sourced from Thomson Reuters' Web of Knowledge

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