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dc.contributor.authorBitlloch, Pau
dc.contributor.authorRuiz, Xavier
dc.contributor.authorRamírez de la Piscina Millán, Laureano
dc.contributor.authorCasademunt, Jaume
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física Aplicada
dc.date.accessioned2010-10-27T11:05:01Z
dc.date.available2010-10-27T11:05:01Z
dc.date.created2009
dc.date.issued2009
dc.identifier.citationBitlloch, P. [et al.]. Spatial structure and velocity fluctuations in turbulent bubble jets in microgravity. A: Interdisciplinary Transport Phenomena Conference. "Sixth Interdisciplinary Transport Phenomena Conference: Fluid, Thermal, Biological, Materials and Space Sciences". Volterra: 2009, p. 1-6.
dc.identifier.urihttp://hdl.handle.net/2117/10022
dc.description.abstractWe study the dynamics of turbulent jets of bubbles created by the injection of a slug flow into a quiescent cavity, both theoretically and experimentally using data from drop tower experiments. The generated bubble jets exhibit a remarkably low degree of coalescence leading to virtually monodisperse suspensions of spherical bubbles. The turbulence of the jet is responsible for the spatial spreading of the bubble distribution in roughly conical jets. We propose a stochastic model for the dispersion of bubbles in the jet, in which the trajectories of individual bubbles can be computed from the stationary solution of a k-epsilon model. Bubble concentration behaves to a good approximation as a passive scalar with a non-homogeneous diffusion. Numerical integration of the model compares well with the experimental data.
dc.format.extent6 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Física
dc.subject.lcshMicrobubbles
dc.subject.lcshReduced gravity environments.
dc.titleSpatial structure and velocity fluctuations in turbulent bubble jets in microgravity
dc.typeConference report
dc.subject.lemacBombolles
dc.subject.lemacGravetat
dc.contributor.groupUniversitat Politècnica de Catalunya. NOLIN - Física No-Lineal i Sistemes Fora de l'Equilibri
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://ame-www.usc.edu/cf/Volterra2009/PROGRAM/PAPERS/Paper-49.pdf
dc.rights.accessOpen Access
local.identifier.drac3257594
dc.description.versionPostprint (published version)
local.citation.authorBitlloch, P.; Ruiz, X.; Ramírez-Piscina, L.; Casademunt, J.
local.citation.contributorInterdisciplinary Transport Phenomena Conference
local.citation.pubplaceVolterra
local.citation.publicationNameSixth Interdisciplinary Transport Phenomena Conference: Fluid, Thermal, Biological, Materials and Space Sciences
local.citation.startingPage1
local.citation.endingPage6


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