Numerical Simulation of Diesel Spray Evaporation in a "Stabilized Cool Flame" Reactor: A Comparative Study

Kolaitis, DI; Founti, MA

dc.contributor.author	Kolaitis, DI	en
dc.contributor.author	Founti, MA	en
dc.date.accessioned	2014-03-01T01:31:29Z
dc.date.available	2014-03-01T01:31:29Z
dc.date.issued	2009	en
dc.identifier.issn	1386-6184	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19801
dc.subject	Two-phase CFD	en
dc.subject	Cool flames	en
dc.subject	Droplet evaporation	en
dc.subject	Low-temperature oxidation	en
dc.subject.classification	Thermodynamics	en
dc.subject.classification	Mechanics	en
dc.subject.other	LOW-TEMPERATURE OXIDATION	en
dc.subject.other	N-HEPTANE OXIDATION	en
dc.subject.other	EXPERIMENTAL VALIDATION	en
dc.subject.other	TURBULENT COMBUSTION	en
dc.subject.other	IGNITION PHENOMENA	en
dc.subject.other	HYDROCARBON FUELS	en
dc.subject.other	KINETIC-MODELS	en
dc.subject.other	AUTOIGNITION	en
dc.subject.other	CHEMISTRY	en
dc.subject.other	FLOWS	en
dc.title	Numerical Simulation of Diesel Spray Evaporation in a "Stabilized Cool Flame" Reactor: A Comparative Study	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/s10494-008-9171-1	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s10494-008-9171-1	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	The major objective of this work is to numerically investigate the interacting physical and chemical phenomena that characterize the flow in a stabilized cool flame diesel fuel spray evaporation system. A two-phase RANS computational fluid dynamics code has been developed and used to predict the characteristics of the developing turbulent, multiphase, multi-component, reactive flow-field. The code employs a Eulerian-Lagrangian approach, taking into account the mass, momentum, thermal and turbulent energy exchange between the phases. A variety of physical phenomena, such as turbulent dispersion, droplet evaporation, droplet-wall collision, conjugate heat transfer, drift correction, two-way coupling are taken into account by implementing respective sub-models. Two alternative modelling approaches for the simulation of cool flame reactions have been validated and evaluated by comparing numerical predictions with experimental data from two atmospheric pressure, evaporating Diesel spray, Stabilized Cool Flame reactors. Both models have achieved good quantitative agreement in the majority of the considered test cases. The results have been used to estimate the local physical and chemical characteristic time scales of the occurring phenomena, thus allowing, for the first time, the classification of stabilized cool flames.	en
heal.publisher	SPRINGER	en
heal.journalName	FLOW TURBULENCE AND COMBUSTION	en
dc.identifier.doi	10.1007/s10494-008-9171-1	en
dc.identifier.isi	ISI:000266037600010	en
dc.identifier.volume	82	en
dc.identifier.issue	4	en
dc.identifier.spage	599	en
dc.identifier.epage	619	en