The role of conductive heat losses on the formation of isolated flame cells in Hele-Shaw chambers

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Show simple item record Martínez Ruiz, Daniel Veiga López, Fernando Fernández-Galisteo, Daniel Kurdyumov, Vadim N. Sánchez Sanz, Mario 2022-02-22T10:25:46Z 2022-02-22T10:25:46Z 2019-11
dc.identifier.bibliographicCitation Martínez-Ruiz, D., Veiga-López, F., Fernández-Galisteo, D., Kurdyumov, V. N. & Sánchez-Sanz, M. (2019). The role of conductive heat losses on the formation of isolated flame cells in Hele-Shaw chambers. Combustion and Flame, 209, 187–199.
dc.identifier.issn 0010-2180
dc.description.abstract The propagation of low-Lewis-number premixed flames is analyzed in a partially confined Hele-Shaw chamber formed by two parallel plates separated a distance h apart. An asymptotic-numerical study can be performed for small gaps compared to the flame thickness deltaT . In this narrow-channel limit, the prob- lem formulation simplifies to a quasi-2D description in which the velocity field is controlled by domi- nant viscous effects. After accounting for conductive heat losses through the plates in our formulation, we found that the reaction front breaks into one or several isolated flame cells where the temperature is large enough to sustain the reaction, both in absence and in presence of buoyancy effects. Under these near-limit conditions, the isolated flame cells either travel steadily or undergo a slow random walk over the chamber in which the reacting front splits successively to form a tree-like pathway, burning only a small fraction of the fuel before reaching the end of the chamber. The production of quasi-2D circular or comet-like flames under specific favorable conditions is demonstrated in this paper, with convection, conductive heat losses and differential diffusion playing an essential role in the formation of the isolated one and two-headed flame cells.
dc.description.sponsorship This work was supported by the project ENE2015-65852-C2-1-R (FV,MSS,DMR) and ENE2015-65852-C2-2-R (DFG,VK) (MINECO/FEDER, UE). Daniel Martínez-Ruiz would like to thank Amable Liñán for fruitful discussions.
dc.format.extent 13
dc.language.iso eng
dc.publisher Elsevier
dc.rights © 2019 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.subject.other Comet flames
dc.subject.other Conductive heat losses
dc.subject.other Flame circles
dc.subject.other Hele-Shaw chamber
dc.subject.other Low-Lewis number
dc.title The role of conductive heat losses on the formation of isolated flame cells in Hele-Shaw chambers
dc.type article
dc.subject.eciencia Ingeniería Industrial
dc.subject.eciencia Ingeniería Mecánica
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. ENE2015-65852-C2-1-R
dc.relation.projectID Gobierno de España. ENE2015-65852-C2-2-R
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 187
dc.identifier.publicationlastpage 199
dc.identifier.publicationtitle Combustion and Flame
dc.identifier.publicationvolume 209
dc.identifier.uxxi AR/0000024438
dc.contributor.funder Ministerio de Economía y Competitividad (España)
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