Development and validation of a multi-zone combustion model for predicting performance characteristics and nox emissions in large scale two-stroke diesel engines

Lamaris, VT; Hountalas, DT; Zannis, TC; Glaros, SE

dc.contributor.author	Lamaris, VT	en
dc.contributor.author	Hountalas, DT	en
dc.contributor.author	Zannis, TC	en
dc.contributor.author	Glaros, SE	en
dc.date.accessioned	2014-03-01T02:52:38Z
dc.date.available	2014-03-01T02:52:38Z
dc.date.issued	2010	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35968
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-77954285509&partnerID=40&md5=c608a3be7079778f1038acd9fd96fc31	en
dc.subject.other	Combustion mechanism	en
dc.subject.other	Constant speed	en
dc.subject.other	Cylinder pressures	en
dc.subject.other	Developed model	en
dc.subject.other	Engine conditions	en
dc.subject.other	Engine load	en
dc.subject.other	Engine performance	en
dc.subject.other	Engine speed	en
dc.subject.other	Experimental analysis	en
dc.subject.other	Experimental investigations	en
dc.subject.other	Input datas	en
dc.subject.other	Multi-zone combustion model	en
dc.subject.other	Multi-zone models	en
dc.subject.other	NOx Emissions	en
dc.subject.other	Performance characteristics	en
dc.subject.other	Performance parameters	en
dc.subject.other	Reference state	en
dc.subject.other	Stationary diesel engines	en
dc.subject.other	Two-stroke diesel engine	en
dc.subject.other	Combustion	en
dc.subject.other	Engine cylinders	en
dc.subject.other	Engines	en
dc.subject.other	Forecasting	en
dc.subject.other	Machine design	en
dc.subject.other	Mechanical engineering	en
dc.subject.other	Diesel engines	en
dc.title	Development and validation of a multi-zone combustion model for predicting performance characteristics and nox emissions in large scale two-stroke diesel engines	en
heal.type	conferenceItem	en
heal.publicationDate	2010	en
heal.abstract	In the present study, an existing multi-zone combustion model has been modified and applied to predict the performance characteristics and the NOx emissions of a largescale two-stroke diesel engine (i.e. 12.5 MW rated power). Initially, an attempt was made to examine whether the multizone model can predict with sufficient accuracy the main performance parameters of the stationary diesel engine, using input data from the shop tests (i.e. engine speed, fuel consumption and scavenging pressure at different engine loads). Hence, it was verified that the model is capable of describing the main performance characteristics of the engine with satisfactory accuracy (i.e. reference state). Further on, an experimental investigation was conducted on the specific engine, consisting of a series of performance and NOx emissions measurements that were conducted at constant speed and at three different engine loads. Then, the proposed model was applied at the present engine condition to evaluate its ability to predict the combustion mechanism using the measured cylinder pressure trace as basis for comparison. Furthermore, the predicted engine out NOx emissions were compared to measured values to examine if the model can estimate at least qualitatively the effect of engine load on them. From this combined theoretical and experimental analysis is revealed that the developed model is capable of adequately predicting both engine performance and NOx emissions of large-scale two-stroke diesel engines. Copyright © 2010 by ASME.	en
heal.journalName	ASME International Mechanical Engineering Congress and Exposition, Proceedings	en
dc.identifier.volume	3	en
dc.identifier.spage	317	en
dc.identifier.epage	327	en