Modeling HCCI combustion: Modification of a multi-zone model and comparison to experimental results at varying boost pressure

Komninos, NP

dc.contributor.author	Komninos, NP	en
dc.date.accessioned	2014-03-01T01:31:09Z
dc.date.available	2014-03-01T01:31:09Z
dc.date.issued	2009	en
dc.identifier.issn	0306-2619	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19751
dc.subject	HCCI	en
dc.subject	Calibration	en
dc.subject	Multi-zone model	en
dc.subject	Supercharged	en
dc.subject	Emissions	en
dc.subject	Hydrocarbons	en
dc.subject	CO	en
dc.subject.classification	Energy & Fuels	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.other	ENGINE	en
dc.subject.other	EMISSIONS	en
dc.title	Modeling HCCI combustion: Modification of a multi-zone model and comparison to experimental results at varying boost pressure	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.apenergy.2009.01.026	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.apenergy.2009.01.026	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	The present study presents a comparison of the results obtained from a modified HCCI multi-zone model to experimental measurements, at different load and boost pressure conditions. The multi-zone model includes a modified sub-model for the wall heat transfer and accounts for the heat transfer between zones. Gas mixing between cold and hot regions of the combustion chamber, which is of major importance for the emissions formation, is also accounted for throughout compression, combustion and expansion. Combustion is modeled using a reduced set of chemical reactions coupled with a chemical kinetics solver. A refined zone configuration near the combustion chamber wall was used, in order to obtain a high resolution at the emissions formation regions. The pressure traces and emissions of nine experimental cases were compared to the multi-zone model results. In these cases the equivalence ratio and the boost pressure were varied, while maintaining constant engine speed. The results show adequate agreement with the pressure traces. The emissions trends are also adequately captured, with the absolute values presenting some deviation from the experimental cases especially for the HC and CO emissions at the relatively low air-fuel equivalence ratios. (C) 2009 Elsevier Ltd. All rights reserved.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	APPLIED ENERGY	en
dc.identifier.doi	10.1016/j.apenergy.2009.01.026	en
dc.identifier.isi	ISI:000266129100035	en
dc.identifier.volume	86	en
dc.identifier.issue	10	en
dc.identifier.spage	2141	en
dc.identifier.epage	2151	en