Evaluation of two radiation models in CFD fire modeling

Keramida, EP; Boudouvis, AG; Lois, E; Markatos, NC; Karayannis, AN

dc.contributor.author	Keramida, EP	en
dc.contributor.author	Boudouvis, AG	en
dc.contributor.author	Lois, E	en
dc.contributor.author	Markatos, NC	en
dc.contributor.author	Karayannis, AN	en
dc.date.accessioned	2014-03-01T11:44:29Z
dc.date.available	2014-03-01T11:44:29Z
dc.date.issued	2001	en
dc.identifier.issn	1040-7782	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/36970
dc.subject.classification	Thermodynamics	en
dc.subject.classification	Mechanics	en
dc.subject.other	HEAT-TRANSFER	en
dc.subject.other	FIELD MODEL	en
dc.subject.other	ROOM	en
dc.subject.other	ENCLOSURES	en
dc.title	Evaluation of two radiation models in CFD fire modeling	en
heal.type	other	en
heal.identifier.primary	10.1080/10407780152032848	en
heal.identifier.secondary	http://dx.doi.org/10.1080/10407780152032848	en
heal.language	English	en
heal.publicationDate	2001	en
heal.abstract	Thermal radiation, although considered an important mode of heat transfer in high temperature conditions, often is neglected in fire modeling, mainly because of the complex physics involved. This study provides modelers with guidance on the engineering treatment of radiation transfer. Two widely used radiation models, the discrete transfer and the six-flux models, are reviewed and their performance is assessed in a benchmark fire case. The models are compared in terms of computational efficiency, ease of application, and predictive accuracy, and their range of validity is delineated, for single compartment fire cases. The results demonstrate that the simple six-flux model suffices for small compartment fires, up to 100 kW. For higher heat release rates, where the six-flux model breaks down, the discrete transfer provides sufficient accuracy, under certain conditions.	en
heal.publisher	HEMISPHERE PUBL CORP	en
heal.journalName	Numerical Heat Transfer; Part A: Applications	en
dc.identifier.doi	10.1080/10407780152032848	en
dc.identifier.isi	ISI:000169122300003	en
dc.identifier.volume	39	en
dc.identifier.issue	7	en
dc.identifier.spage	711	en
dc.identifier.epage	722	en