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dc.contributor.authorSuñol Galofre, Francesc Xavier
dc.contributor.authorGonzález Cinca, Ricardo
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física
dc.date.accessioned2016-01-13T13:59:23Z
dc.date.available2016-01-13T13:59:23Z
dc.date.issued2015-07-28
dc.identifier.citationSuñol, F., Gonzalez, R. Liquid jet breakup and subsequent droplet dynamics under normal gravity and in microgravity conditions. "Physics of fluids", 28 Juliol 2015, vol. 27.
dc.identifier.issn1070-6631
dc.identifier.urihttp://hdl.handle.net/2117/81354
dc.description.abstractWe present an experimental study on the characteristics of liquid jets in different configurations. We consider jets injected perpendicular to gravity, jets injected parallel to gravity, and jets injected in a microgravity environment. We study the role played by gravity in the jet breakup length and in the dynamics of the droplets generated after breakup. We analyze droplets obtained in the dripping and jetting regimes, focusing the study on their size, trajectory, oscillation, and rotation. The particularities of the considered injection configurations are analyzed. In normal gravity conditions, in the dripping and jetting regimes, the breakup length increases with the Weber number. The transition between these regimes occurs at Wecr ˜ 3.2. Droplets are notably larger in the dripping regime than in the jetting one. In the latter case, droplet mean size decreases as the liquid flow rate is increased. In microgravity conditions, droplet trajectories form a conical shape due to droplet bouncing after collision. When a collision takes place, coalescence tends to occur at low modified Weber numbers (We m < 2) while bouncing is observed at higher values (We m > 2). The surface of a droplet oscillates after bouncing or coalescence events, following a damped oscillator behavior. The observed oscillation frequency agrees with theoretical predictions.
dc.language.isoeng
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Física
dc.subject.lcshDrops
dc.subject.lcshReduced gravity environments
dc.subject.lcshGravity
dc.subject.otherReduced gravity environments
dc.subject.otherGravity: Dropets
dc.titleLiquid jet breakup and subsequent droplet dynamics under normal gravity and in microgravity conditions
dc.typeArticle
dc.subject.lemacGravetat -- Investigació
dc.subject.lemacLíquids--Efecte de la microgravetat
dc.contributor.groupUniversitat Politècnica de Catalunya. BIOCOM-SC - Grup de Biologia Computacional i Sistemes Complexos
dc.identifier.doi10.1063/1.4927365
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
local.identifier.drac16832026
dc.description.versionPostprint (published version)
local.citation.authorSuñol, F.; Gonzalez, R.
local.citation.publicationNamePhysics of fluids
local.citation.volume27
local.citation.startingPage077102


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