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Air Bubble Entrainment in Breaking Bores: Physical and Numerical CFD Modelling

hal.structure.identifierSchool of Civil Engineering, The University of Queensland
dc.contributor.authorLENG, X
hal.structure.identifierSchool of Civil Engineering, The University of Queensland
dc.contributor.authorCHANSON, Hubert
hal.structure.identifierInstitut de Mécanique et d'Ingénierie de Bordeaux [I2M]
dc.contributor.authorLUBIN, Pierre
dc.date.accessioned2021-05-14T09:42:05Z
dc.date.available2021-05-14T09:42:05Z
dc.date.conference2018-05-15
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/76698
dc.description.abstractEnA positive surge or bore is an unsteady rapidly-varied open channel flow characterised by a rise in water surface elevation. After formation, the bore is traditionally analysed as a hydraulic jump in translation and its leading edge is characterised by a breaking roller for Fr1 > 1.3-1.5. The roller is a key flow feature characterised by intense turbulence and air bubble entrainment. Herein detailed air-water flow measurements were conducted in breaking bores propagating in a large-size channel. The data showed a relatively steep roller, with a short and dynamic bubbly flow region. The results were used to validate a Computational Fluid Dynamics (CFD) model of breaking bores. The instantaneous void fraction and bubble distribution data showed systematically a lesser aeration region in the physical model, compared to the numerical data. The differences may be linked to some limitation of the CFD modelling.
dc.language.isoen
dc.source.title7th International Symposium on Hydraulic Structures
dc.subject.enBreaking bores
dc.subject.enair bubble entrainment
dc.subject.encomputational fluid dynamics
dc.subject.enCFD modelling
dc.subject.enphysical modelling
dc.subject.entwo- phase flow
dc.subject.enunsteady flow motion
dc.title.enAir Bubble Entrainment in Breaking Bores: Physical and Numerical CFD Modelling
dc.typeCommunication dans un congrès avec actes
dc.identifier.doi10.15142/T3FS9Q
dc.subject.halSciences de l'ingénieur [physics]
bordeaux.hal.laboratoriesInstitut de Mécanique et d’Ingénierie de Bordeaux (I2M) - UMR 5295*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.institutionINRAE
bordeaux.institutionArts et Métiers
bordeaux.countryDE
bordeaux.title.proceeding7th International Symposium on Hydraulic Structures
bordeaux.conference.cityAachen
bordeaux.peerReviewedoui
hal.identifierhal-02158960
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02158960v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.btitle=7th%20International%20Symposium%20on%20Hydraulic%20Structures&rft.au=LENG,%20X&CHANSON,%20Hubert&LUBIN,%20Pierre&rft.genre=proceeding


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