A tabulated chemistry approach for numerical modeling of diesel spray evaporation in a "stabilized cool flame" environment

Kolaitis, DI; Founti, MA

dc.contributor.author	Kolaitis, DI	en
dc.contributor.author	Founti, MA	en
dc.date.accessioned	2014-03-01T01:23:31Z
dc.date.available	2014-03-01T01:23:31Z
dc.date.issued	2006	en
dc.identifier.issn	0010-2180	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16998
dc.subject	cool flame	en
dc.subject	droplet evaporation	en
dc.subject	two-phase flow	en
dc.subject	lookup table	en
dc.subject	autoignition	en
dc.subject.classification	Thermodynamics	en
dc.subject.classification	Energy & Fuels	en
dc.subject.classification	Engineering, Multidisciplinary	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.other	LOW-TEMPERATURE OXIDATION	en
dc.subject.other	PRACTICAL COMBUSTION SYSTEMS	en
dc.subject.other	N-HEPTANE	en
dc.subject.other	EXPERIMENTAL VALIDATION	en
dc.subject.other	IGNITION PHENOMENA	en
dc.subject.other	HYDROCARBON FUELS	en
dc.subject.other	KINETIC-MODELS	en
dc.subject.other	FLOWS	en
dc.subject.other	SIMULATION	en
dc.subject.other	AUTOIGNITION	en
dc.title	A tabulated chemistry approach for numerical modeling of diesel spray evaporation in a "stabilized cool flame" environment	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.combustflame.2005.10.008	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.combustflame.2005.10.008	en
heal.language	English	en
heal.publicationDate	2006	en
heal.abstract	Droplet evaporation in a "stabilized cool flame" environment leads to a homogeneous. heated air-fuel vapor mixture that can be subsequently either burnt or utilized in fuel-reforming applications for fuel cell systems. The paper investigates the locally occurring physico-chemical phenomena in an atmospheric pressure. diesel spray, stabilized cool flame reactor, utilizing a tabulated chemistry approach in conjunction with a two-phase, Eulerian-Lagrangian Computational fluid dynamics code. Actual diesel oil physical properties are used to model spray evaporation in the two-phase simulations, whereas the corresponding chemistry is represented by n-heptane. A lookup table is constructed by performing a plethora of perfectly stirred reactor simulations, utilizing a semide-tailed n-heptane oxidation chemical kinetics mechanism. The overall exothermicity of the preignition n-heptane oxidation chemistry and the fuel consumption rates are examined as a function of selected independent parameters. namely temperature. fuel concentration, and residence time: their influence on cool flame reactivity is thoroughly Studied. It is shown that the tabulated chemistry approach allows accurate investigation of the chemical phenomena with low computational cost. The two-phase flow inside the stabilized cool flame reactor is simulated, utilizing the developed lookup table. Predictions are presented for a variety of test cases and are compared to available experimental data, with satisfactory agreement. Model validation tests indicate that prediction quality improves with increasing values of air temperature at the reactor's inlet. (c) 2005 The Combustion Institute. Published by Elsevier Inc. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE INC	en
heal.journalName	COMBUSTION AND FLAME	en
dc.identifier.doi	10.1016/j.combustflame.2005.10.008	en
dc.identifier.isi	ISI:000236722000018	en
dc.identifier.volume	145	en
dc.identifier.issue	1-2	en
dc.identifier.spage	259	en
dc.identifier.epage	271	en