A comparative study of numerical models for Eulerian-Lagrangian simulations of turbulent evaporating sprays

Kolaitis, DI; Founti, MA

dc.contributor.author	Kolaitis, DI	en
dc.contributor.author	Founti, MA	en
dc.date.accessioned	2014-03-01T01:23:22Z
dc.date.available	2014-03-01T01:23:22Z
dc.date.issued	2006	en
dc.identifier.issn	0142-727X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16935
dc.subject	spray modelling	en
dc.subject	droplet evaporation	en
dc.subject	heat and mass transfer	en
dc.subject	two-phase CFD	en
dc.subject.classification	Thermodynamics	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.classification	Mechanics	en
dc.subject.other	PHASE-DOPPLER ANEMOMETRY	en
dc.subject.other	DROPLET EVAPORATION	en
dc.subject.other	VARIABLE PROPERTIES	en
dc.subject.other	FUEL DROPLET	en
dc.subject.other	MASS-TRANSFER	en
dc.subject.other	FLOW	en
dc.subject.other	COMBUSTION	en
dc.subject.other	VAPORIZATION	en
dc.subject.other	EXPANSION	en
dc.subject.other	PREDICTION	en
dc.title	A comparative study of numerical models for Eulerian-Lagrangian simulations of turbulent evaporating sprays	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.ijheatfluidflow.2006.01.002	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.ijheatfluidflow.2006.01.002	en
heal.language	English	en
heal.publicationDate	2006	en
heal.abstract	The paper comparatively assesses the computational performance of a selected number of theoretical and semi-empirical liquid droplet evaporation models that focus on thermodynamic non-equilibrium effects, physical property estimation methods and convective and blowing effect corrections for the calculation of the heat and mass transfer rates. Three different test cases are examined in order to establish the most appropriate model, in terms of both physical accuracy and numerical efficiency for implementation in two-phase CFD spray simulations. The considered cases span from a single, isolated droplet, evaporating in a convective environment, to a fully turbulent, evaporating, hollow cone spray; for the latter case, an in-house Eulerian-Lagrangian CFD code is used. Predictions are validated against experimental data for all test cases and the most promising model is established on the basis of accuracy and CPU time requirements. As a result, the "infinite conductivity" equilibrium droplet evaporation model, combined with an analytic expression for the convective and blowing effect correction can be proposed as most appropriate for CFD spray applications. (C) 2006 Elsevier Inc. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE INC	en
heal.journalName	INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW	en
dc.identifier.doi	10.1016/j.ijheatfluidflow.2006.01.002	en
dc.identifier.isi	ISI:000237638400006	en
dc.identifier.volume	27	en
dc.identifier.issue	3	en
dc.identifier.spage	424	en
dc.identifier.epage	435	en