Air Bubble Entrainment in Breaking Bores: Physical and Numerical CFD Modelling
| dc.contributor.author | LENG, X | |
| dc.contributor.author | CHANSON, Hubert | |
| dc.contributor.author | LUBIN, Pierre | |
| dc.date.accessioned | 2021-05-14T09:42:05Z | |
| dc.date.available | 2021-05-14T09:42:05Z | |
| dc.date.conference | 2018-05-15 | |
| dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/76698 | |
| dc.description.abstractEn | A 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.iso | en | |
| dc.source.title | 7th International Symposium on Hydraulic Structures | |
| dc.subject.en | Breaking bores | |
| dc.subject.en | air bubble entrainment | |
| dc.subject.en | computational fluid dynamics | |
| dc.subject.en | CFD modelling | |
| dc.subject.en | physical modelling | |
| dc.subject.en | two- phase flow | |
| dc.subject.en | unsteady flow motion | |
| dc.title.en | Air Bubble Entrainment in Breaking Bores: Physical and Numerical CFD Modelling | |
| dc.type | Communication dans un congrès avec actes | |
| dc.identifier.doi | 10.15142/T3FS9Q | |
| dc.subject.hal | Sciences de l'ingénieur [physics] | |
| bordeaux.hal.laboratories | Institut de Mécanique et d’Ingénierie de Bordeaux (I2M) - UMR 5295 | * |
| bordeaux.institution | Université de Bordeaux | |
| bordeaux.institution | Bordeaux INP | |
| bordeaux.institution | CNRS | |
| bordeaux.institution | INRAE | |
| bordeaux.institution | Arts et Métiers | |
| bordeaux.country | DE | |
| bordeaux.title.proceeding | 7th International Symposium on Hydraulic Structures | |
| bordeaux.conference.city | Aachen | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-02158960 | |
| hal.version | 1 | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-02158960v1 | |
| bordeaux.COinS | ctx_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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