Assessment of simplified thermal radiation models for engineering calculations in natural gas-fired furnace

Kontogeorgos, DA; Keramida, EP; Founti, MA

dc.contributor.author	Kontogeorgos, DA	en
dc.contributor.author	Keramida, EP	en
dc.contributor.author	Founti, MA	en
dc.date.accessioned	2014-03-01T01:25:57Z
dc.date.available	2014-03-01T01:25:57Z
dc.date.issued	2007	en
dc.identifier.issn	0017-9310	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17839
dc.subject	Natural gas furnaces	en
dc.subject	P-1 model	en
dc.subject	Radiation	en
dc.subject	Six-flux model	en
dc.subject.classification	Thermodynamics	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.classification	Mechanics	en
dc.subject.other	Computation theory	en
dc.subject.other	Mathematical models	en
dc.subject.other	Natural gas	en
dc.subject.other	Turbulent flow	en
dc.subject.other	Natural gas furnaces	en
dc.subject.other	P-1 model	en
dc.subject.other	Six-flux model	en
dc.subject.other	Heat radiation	en
dc.subject.other	Computation theory	en
dc.subject.other	Heat radiation	en
dc.subject.other	Mathematical models	en
dc.subject.other	Natural gas	en
dc.subject.other	Turbulent flow	en
dc.title	Assessment of simplified thermal radiation models for engineering calculations in natural gas-fired furnace	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.ijheatmasstransfer.2007.06.011	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.ijheatmasstransfer.2007.06.011	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	The paper assesses the significance of thermal radiation in turbulent non-premixed natural gas flames confined in axisymmetric furnaces. The in-house developed computational model includes simulation of the turbulent flow characteristics, the controlling Mixing and chemical mechanisms as well as radiation modeled via the six-flux and of the P-1 models. A variable absorption coefficient is taken into account for the gaseous combustion mixture based on temperature and composition of the mixture. The results with and without radiation are evaluated as part of the complete prediction procedure involving flow, combustion, convection, and radiation phenomena. The comparative assessment of the two radiation models against experimental data indicates that they can be easily applied in engineering cases, with the P-1 model yielding more accurate results in the case considered. (C) 2007 Elsevier Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	International Journal of Heat and Mass Transfer	en
dc.identifier.doi	10.1016/j.ijheatmasstransfer.2007.06.011	en
dc.identifier.isi	ISI:000252099200032	en
dc.identifier.volume	50	en
dc.identifier.issue	25-26	en
dc.identifier.spage	5260	en
dc.identifier.epage	5268	en