Prediction of staged coal combustion in three-dimensional furnaces

Papadakis, G; Bergeles, G

dc.contributor.author	Papadakis, G	en
dc.contributor.author	Bergeles, G	en
dc.date.accessioned	2014-03-01T01:10:08Z
dc.date.available	2014-03-01T01:10:08Z
dc.date.issued	1994	en
dc.identifier.issn	0144-2600	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11321
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0028710599&partnerID=40&md5=fcff181b1605d52388d979ce998cd99c	en
dc.subject.classification	Energy & Fuels	en
dc.subject.other	Aerodynamics	en
dc.subject.other	Algorithms	en
dc.subject.other	Boundary conditions	en
dc.subject.other	Finite difference method	en
dc.subject.other	Forecasting	en
dc.subject.other	Furnaces	en
dc.subject.other	Mathematical models	en
dc.subject.other	Nitrogen oxides	en
dc.subject.other	Nitrogen removal	en
dc.subject.other	Numerical methods	en
dc.subject.other	Three dimensional	en
dc.subject.other	Devolatilisation	en
dc.subject.other	Stacked gas removal	en
dc.subject.other	Staged coal combustion	en
dc.subject.other	Three dimensional furnaces	en
dc.subject.other	Coal combustion	en
dc.title	Prediction of staged coal combustion in three-dimensional furnaces	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1994	en
heal.abstract	A 3-D numerical method was used for the study of staged coal combustion in a semi-industrial-scale furnace experimentally investigated in the International Flame Research Foundation (IFRF). Detailed evaluation of the 3-D code against experimental data for temperature, oxygen and nitrogen monoxide concentration is presented. In the numerical algorithm is incorporated a higher-order finite-differencing scheme for all equations, along with a general devolatilisation model. In order to minimise time and memory requirements, the computational domain was limited to one quarter of the furnace with the aid of cyclic boundary conditions. A reasonable degree of agreement is indicated by comparison of predicted and experimental results. The NO post-processor used employs a simplified reaction path for the formation and destruction of NO, and both fuel NO and thermal NO are accounted for. Predicted NO levels indicate that under staged combustion conditions the relative effect of char nitrogen on the total NO formed is more important than in normal combustion conditions, where most NO is formed from the nitrogen contained in the volatile. The experimental observation that burner aerodynamic changes affect mostly conversion of volatile nitrogen to NO is correctly predicted.	en
heal.publisher	Inst of Energy, London, United Kingdom	en
heal.journalName	Journal of the Institute of Energy	en
dc.identifier.isi	ISI:A1994QA61800003	en
dc.identifier.volume	67	en
dc.identifier.issue	473	en
dc.identifier.spage	156	en
dc.identifier.epage	167	en