Experimental study of the channel effect on the flame spread over thin solid fuels

We experimentally burn thin solid fuels and obtain the speed of the flame front when it propagates (1) within a narrow channel (closed cross section), (2) within a channel with lateral walls only and (3) through a free cross section (plain case). The latter configuration is the classical one and it...

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Detalles Bibliográficos
Autores: Comas Hervada, Bruna, Carmona Esparraguera, Adrià, Pujol i Sagaró, Toni
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2015
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:10256/14112
Acceso en línea:http://hdl.handle.net/10256/14112
Access Level:acceso embargado
Palabra clave:Combustió
Combustion
Combustibles
Fuel
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spelling Experimental study of the channel effect on the flame spread over thin solid fuelsComas Hervada, BrunaCarmona Esparraguera, AdriàPujol i Sagaró, ToniCombustióCombustionCombustiblesFuelWe experimentally burn thin solid fuels and obtain the speed of the flame front when it propagates (1) within a narrow channel (closed cross section), (2) within a channel with lateral walls only and (3) through a free cross section (plain case). The latter configuration is the classical one and it has been extensively studied with analytical, numerical and experimental methods by other authors. Our experiments have been carried out at different geometrical configurations and angles of inclination of the sample and also at several values of oxygen molar fraction. All experiments are restricted to purely buoyant flow. Our main results are as follows: (1) sidewalls reduce the flame spread rate in a non-monotonous trend when varying its height; (2) in horizontal flame spread, two simultaneous flame fronts that propagate at different velocities may arise in the channel case at high oxygen levels. The fastest flame front speed may be higher than that obtained in the plain case; (3) in upward flame spread, the channel effect configuration produces the highest flame front speed. We finally analyze the correlation of the downward flame front speed data in terms of the Damkohler numberThis work has been partially funded by the Generalitat de Catalunya under Grant 2009-SGR-374, the MICINN-FEDER under Grants FIS2009-13050 and FIS-2012-31307ElsevierMinisterio de Ciencia e Innovación (Espanya)Ministerio de Economía y Competitividad (Espanya)infoinfo2015info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10256/14112http://hdl.handle.net/10256/14112© Fire Safety Journal, 2015, vol. 71, p. 162-173Articles publicats (D-EMCI)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)Inglésinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.firesaf.2014.12.001info:eu-repo/semantics/altIdentifier/issn/0379-7112MICINN/PN 2010-2012/FIS2009-13050info:eu-repo/grantAgreement/MINECO//FIS2012-31307Tots els drets reservatsinfo:eu-repo/semantics/embargoedAccessoai:recercat.cat:10256/141122026-05-29T05:05:01Z
dc.title.none.fl_str_mv Experimental study of the channel effect on the flame spread over thin solid fuels
title Experimental study of the channel effect on the flame spread over thin solid fuels
spellingShingle Experimental study of the channel effect on the flame spread over thin solid fuels
Comas Hervada, Bruna
Combustió
Combustion
Combustibles
Fuel
title_short Experimental study of the channel effect on the flame spread over thin solid fuels
title_full Experimental study of the channel effect on the flame spread over thin solid fuels
title_fullStr Experimental study of the channel effect on the flame spread over thin solid fuels
title_full_unstemmed Experimental study of the channel effect on the flame spread over thin solid fuels
title_sort Experimental study of the channel effect on the flame spread over thin solid fuels
dc.creator.none.fl_str_mv Comas Hervada, Bruna
Carmona Esparraguera, Adrià
Pujol i Sagaró, Toni
author Comas Hervada, Bruna
author_facet Comas Hervada, Bruna
Carmona Esparraguera, Adrià
Pujol i Sagaró, Toni
author_role author
author2 Carmona Esparraguera, Adrià
Pujol i Sagaró, Toni
author2_role author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (Espanya)
Ministerio de Economía y Competitividad (Espanya)
dc.subject.none.fl_str_mv Combustió
Combustion
Combustibles
Fuel
topic Combustió
Combustion
Combustibles
Fuel
description We experimentally burn thin solid fuels and obtain the speed of the flame front when it propagates (1) within a narrow channel (closed cross section), (2) within a channel with lateral walls only and (3) through a free cross section (plain case). The latter configuration is the classical one and it has been extensively studied with analytical, numerical and experimental methods by other authors. Our experiments have been carried out at different geometrical configurations and angles of inclination of the sample and also at several values of oxygen molar fraction. All experiments are restricted to purely buoyant flow. Our main results are as follows: (1) sidewalls reduce the flame spread rate in a non-monotonous trend when varying its height; (2) in horizontal flame spread, two simultaneous flame fronts that propagate at different velocities may arise in the channel case at high oxygen levels. The fastest flame front speed may be higher than that obtained in the plain case; (3) in upward flame spread, the channel effect configuration produces the highest flame front speed. We finally analyze the correlation of the downward flame front speed data in terms of the Damkohler number
publishDate 2015
dc.date.none.fl_str_mv 2015
info
info
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10256/14112
http://hdl.handle.net/10256/14112
url http://hdl.handle.net/10256/14112
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.firesaf.2014.12.001
info:eu-repo/semantics/altIdentifier/issn/0379-7112
MICINN/PN 2010-2012/FIS2009-13050
info:eu-repo/grantAgreement/MINECO//FIS2012-31307
dc.rights.none.fl_str_mv Tots els drets reservats
info:eu-repo/semantics/embargoedAccess
rights_invalid_str_mv Tots els drets reservats
eu_rights_str_mv embargoedAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv © Fire Safety Journal, 2015, vol. 71, p. 162-173
Articles publicats (D-EMCI)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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