Three-dimensional numerical investigation of a droplet impinging normally onto a wall film

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	2014-03-01T01:27:28Z
dc.date.available	2014-03-01T01:27:28Z
dc.date.issued	2007	en
dc.identifier.issn	0021-9991	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18466
dc.subject	Deposition	en
dc.subject	Lamella	en
dc.subject	Liquid film	en
dc.subject	Splashing	en
dc.subject	Volume of fluid method	en
dc.subject.classification	Computer Science, Interdisciplinary Applications	en
dc.subject.classification	Physics, Mathematical	en
dc.subject.other	BUBBLE ENTRAINMENT	en
dc.subject.other	CROWN FORMATION	en
dc.subject.other	LIQUID-FILMS	en
dc.subject.other	SINGLE DROP	en
dc.subject.other	VOF METHOD	en
dc.subject.other	IMPACT	en
dc.subject.other	FLUID	en
dc.subject.other	SURFACES	en
dc.subject.other	SEPARATION	en
dc.subject.other	DYNAMICS	en
dc.title	Three-dimensional numerical investigation of a droplet impinging normally onto a wall film	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.jcp.2006.12.002	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.jcp.2006.12.002	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	The paper presents a three-dimensional numerical investigation of a droplet impinging normally onto a wall film. The numerical method is based on the finite volume solution of the Navier-Stokes equations coupled with the volume of fluid method (VOF) and utilizing an adaptive local grid refinement technique for tracking more accurately the liquid-gas interface. The results are compared with available experimental data for integral quantities such as the lamella temporal development. Two mechanisms are identified leading to secondary droplet formation; in the initial and intermediate stages of splashing secondary droplet formation is according to Rayleigh instability while at later times surface tension effects contribute further to secondary atomization. Moreover, the influence of Weber number on the impingement process is investigated and correlations for the diameter and number of secondary droplets are proposed. (c) 2006 Elsevier Inc. All rights reserved.	en
heal.publisher	ACADEMIC PRESS INC ELSEVIER SCIENCE	en
heal.journalName	Journal of Computational Physics	en
dc.identifier.doi	10.1016/j.jcp.2006.12.002	en
dc.identifier.isi	ISI:000248854300018	en
dc.identifier.volume	225	en
dc.identifier.issue	1	en
dc.identifier.spage	322	en
dc.identifier.epage	341	en