Show simple item record

dc.contributor.authorArias Calderón, Santiago
dc.contributor.authorVillardi de Montlaur, Adeline de
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física
dc.identifier.citationArias, S., Montlaur, A. A 3D numerical study of the bubble generation process into a bubble T-junction generator and its comparison with experimental data: part I. A: European Congress on Computational Methods in Applied Sciences and Engineering. "ECCOMAS 2016: proceedings, June 5-10 2016, Crete, Greece". Crete: 2016, p. 772-787.
dc.description.abstractThis work presents a 3D numerical study of the bubble generation process into a bubble generator obtained with the commercial Computational Fluid Dynamics solver ANSYS Fluent v15.0.7, and its comparison with experimental data reproducing the same conditions [1]. The bubble generator is formed by two perpendicular capillaries in which liquid and gas are injected at perpendicular directions into a 1 mm internal diameter capillary T-junction with a total length of 10 mm. The fluids used in experiments and CFD simulations are air and water, both of them considered incompressible and isothermal, at a room temperature of 25 . A total of 23 different cases are studied for different injection conditions, and results between numerical simulations and experiments are compared. In this first part of the analysis, we focus on the flow pattern regimes and the dynamics of the bubble generation process. In addition to the new numerical simulations presented here, a new model has been used to predict the bubble generation frequency and tested with both experimental and numerical data. Results on bubble generation frequency are also presented by means of the non-dimensional Strouhal number. Same types of patterns, bubble and slug flow regimes, are obtained in simulations and experiments. In order to perform an exhaustive validation and comparison of numerical simulations with experimental data, several parameters have been selected: bubble velocity, volumetric void fraction, bubble generation frequency, Strouhal number and bubble equivalent diameter. Numerical simulations agree qualitatively, but not always quantitatively, with experimental results. 772
dc.format.extent16 p.
dc.subjectÀrees temàtiques de la UPC::Física
dc.subject.lcshTwo-phase flow
dc.subject.lcshComputational fluid dynamics
dc.subject.otherTwo-phase flows
dc.subject.otherBubble generation
dc.subject.otherNumerical simulation
dc.subject.otherComputational Fluid Dynamics (CFD)
dc.subject.otherVolume of Fluid
dc.titleA 3D numerical study of the bubble generation process into a bubble T-junction generator and its comparison with experimental data: part I
dc.typeConference report
dc.subject.lemacDinàmica de fluids computacional
dc.contributor.groupUniversitat Politècnica de Catalunya. BIOCOM-SC - Grup de Biologia Computacional i Sistemes Complexos
dc.contributor.groupUniversitat Politècnica de Catalunya. LACÀN - Mètodes Numèrics en Ciències Aplicades i Enginyeria
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (author's final draft)
local.citation.authorArias, S.; Montlaur, A.
local.citation.contributorEuropean Congress on Computational Methods in Applied Sciences and Engineering
local.citation.publicationNameECCOMAS 2016: proceedings, June 5-10 2016, Crete, Greece

Files in this item


This item appears in the following Collection(s)

Show simple item record

Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain