A numerical investigation of the evaporation process of a liquid droplet impinging onto a hot substrate

Nikolopoulos, N; Theodorakakos, A; Bergeles, G

dc.contributor.author	Nikolopoulos, N	en
dc.contributor.author	Theodorakakos, A	en
dc.contributor.author	Bergeles, G	en
dc.date.accessioned	2014-03-01T01:25:45Z
dc.date.available	2014-03-01T01:25:45Z
dc.date.issued	2007	en
dc.identifier.issn	0017-9310	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17749
dc.subject	Droplet evaporation	en
dc.subject	Kinetic theory	en
dc.subject	Leidenfrost temperature	en
dc.subject	Volume of Fluid Method	en
dc.subject.classification	Thermodynamics	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.classification	Mechanics	en
dc.subject.other	Drop formation	en
dc.subject.other	Evaporation	en
dc.subject.other	Kinetic theory	en
dc.subject.other	Navier Stokes equations	en
dc.subject.other	Numerical methods	en
dc.subject.other	Substrates	en
dc.subject.other	Droplet evaporation	en
dc.subject.other	Leidenfrost temperature	en
dc.subject.other	Volume of Fluid Method	en
dc.subject.other	Heat transfer	en
dc.subject.other	Drop formation	en
dc.subject.other	Evaporation	en
dc.subject.other	Heat transfer	en
dc.subject.other	Kinetic theory	en
dc.subject.other	Navier Stokes equations	en
dc.subject.other	Numerical methods	en
dc.subject.other	Substrates	en
dc.title	A numerical investigation of the evaporation process of a liquid droplet impinging onto a hot substrate	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.ijheatmasstransfer.2006.06.012	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.ijheatmasstransfer.2006.06.012	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	A numerical investigation of the evaporation process of n-heptane and water liquid droplets impinging onto a hot substrate is presented. Three different temperatures are investigated, covering flow regimes below and above Leidenfrost temperature. The Navier-Stokes equations expressing the flow distribution of the liquid and gas phases, coupled with the Volume of Fluid Method (VOF) for tracking the liquid-gas interface, are solved numerically using the finite volume methodology. Both two-dimensional axisymmetric and fully three-dimensional domains are utilized. An evaporation model coupled with the VOF methodology predicts the vapor blanket height between the evaporating droplet and the substrate, for cases with substrate temperature above the Leidenfrost point, and the formation of vapor bubbles in the region of nucleate boiling regime. The results are compared with available experimental data indicating the outcome of the impingement and the droplet shape during the impingement process, while additional information for the droplet evaporation rate and the temperature and vapor concentration fields is provided by the computational model. (c) 2006 Elsevier Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	International Journal of Heat and Mass Transfer	en
dc.identifier.doi	10.1016/j.ijheatmasstransfer.2006.06.012	en
dc.identifier.isi	ISI:000242783300029	en
dc.identifier.volume	50	en
dc.identifier.issue	1-2	en
dc.identifier.spage	303	en
dc.identifier.epage	319	en