Hydrodynamic interaction between a pair of bubbles ascending in shear-thinning inelastic fluids

Vélez-Cordero, J. Rodrigo; Sámano, Diego; Yue, Pengtao; Feng, James J.; Zenit, Roberto

doi:10.1016/j.jnnfm.2010.11.003

Cited by 70 publications

(41 citation statements)

References 56 publications

(111 reference statements)

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“…The aim of the present work is to study the formation of clusters of mono-disperse bubbles in power-law shear-thinning fluids, leaving aside, as much as possible, the elastic effects. We support the discussion of our experimental observations with the results of a companion paper [23] which analyzes the hydrodynamic interaction between bubble pairs ascending in shear-thinning fluids, both experimentally and numerically.…”

Section: Introductionsupporting

confidence: 86%

“…This increase of the drag coefficient with the thinning behavior has been already reported by theoretical [30,29], experimental [29,27] and numerical [23] studies for the creeping and small but finite Reynolds regimes. Note that for the Newtonian fluid the Oseen wake is already seen at Re ∼ 7.…”

Section: Single Bubblessupporting

confidence: 81%

“…We think that cluster growth in thinning fluids is a mechanism that reduces the spatial viscosity differences in the flow leading to a 'Newtonian-like' state as the gas fraction is increased. This idea is explained in the companion paper [23].…”

Section: Bubble Velocity Variancementioning

confidence: 99%

“…In this work no clustering was seen at first glance in the Newtonian fluid. Nevertheless, a pair of bubbles rising in a viscous Newtonian fluid can form a stable doublet (see the companion paper [23]). This indicates that the gas fraction has an important role in cluster desegregation in Newtonian fluids, as seen by Cartellier et al [43].…”

Section: Conditions For Cluster Formationmentioning

confidence: 99%

See 3 more Smart Citations

Bubble cluster formation in shear-thinning inelastic bubbly columns

Vélez-Cordero

Zenit

2011

Journal of Non-Newtonian Fluid Mechanics

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Section: Introductionsupporting

confidence: 86%

Section: Single Bubblessupporting

confidence: 81%

Section: Bubble Velocity Variancementioning

confidence: 99%

Section: Conditions For Cluster Formationmentioning

confidence: 99%

See 2 more Smart Citations

Bubble cluster formation in shear-thinning inelastic bubbly columns

Vélez-Cordero

Zenit

2011

Journal of Non-Newtonian Fluid Mechanics

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“…In case of a loose pinning, or displacing pinning point with the ambient bulk simple shear, it would explain the ladder dike structures. This situation is specific to gas bubbles travelling through a shear thinning fluid (Velez-Cordero et al, 2011). In addition, tumbling of the bubbles is enhanced with the increasing Reynolds number (Fig.…”

Section: Evolution Of Instabilitiesmentioning

confidence: 91%

Textures and melt-crystal-gas interactions in granites

Vigneresse¹

2015

Geoscience Frontiers

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a b s t r a c tFelsic intrusions present ubiquitous structures. They result from the differential interactions between the magma components (crystal, melt, gas phase) while it flows or when the flow is perturbed by a new magma injection. The most obvious structure consists in fabrics caused by the interactions of rotating grains in a flowing viscous melt. New magma inputs through dikes affect the buk massif flow, considered as global within each mineral facies. A review of the deformation and flow types developing in a magma chamber identifis the patterns that could be expected. It determines their controlling parameters and summarizes the tools for their quantification. Similarly, a brief review of the rheology of a complex multiphase magma identifies and suggests interactions between the different components. The specific responses each component presents lead to instability development. In particular, the change in vorticity orientation, associated with the switch between monoclinic to triclinic flow is a cause of many instabilities. Those are preferentially local. Illustrations include fabric development, shear zones and flow banding. They depend of the underlying rheology of interacting magmas. Dikes, enclaves, schlieren and ladder dikes result from the interactions between the magma components and changing boundary conditions. Orbicules, pegmatites, unidirectional solidification textures and miarolitic cavities result from the interaction of the melt with a gaseous phase. The illustrations examine what is relevant to the bulk flow, local structures or boundary conditions. In each case a field observation illustrates the instability. The discussion reformulates instability observations, suggesting new trails for ther description and interpretation in terms of local departure to a bulk flow. A brief look at larger structures and at their evolution tries to relate these instabilities on a broader scale. The helical structures of the Rí cany pluton, Czech Republic and by the multiple granitic intrusions of Dolbel, Niger illustrate such events.Ó 2014, China University of Geosciences (Beijing) and Peking University. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/ licenses/by-nc-nd/4.0/).

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Three‐dimensional numerical simulation of coalescence and interactions of multiple horizontal bubbles rising in shear‐thinning fluids

et al. 2015

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International audienceThe dynamics of multiple horizontal bubbles rising from different orifice arrangements in shear-thinning fluids was simulated numerically by three-dimensional Volume of Fluid method. The effects of bubble size, rheological properties of shear-thinning fluids, and orifice structure arrangements on multiple bubbles interaction and coalescence were analyzed, and the mechanisms of bubble coalescence and breakup were fully discussed and elucidated. The variation of bubble rising velocity during coalescence process and freely rising processes for different orifice arrangements was also deeply investigated. The critical initial horizontal intervals for coalescence of multiple horizontal bubbles with various orifice arrangements were attained by simulation, which could serve as the critical criterion of bubble coalescence or noncoalescence. Furthermore, the critical bubble interval was predicted based on the film drainage model, the prediction accords well with the simulation result and is quite conducive for the design and optimization of perforated gas-liquid contact equipment

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Hydrodynamic interaction between a pair of bubbles ascending in shear-thinning inelastic fluids

Cited by 70 publications

References 56 publications

Bubble cluster formation in shear-thinning inelastic bubbly columns

Bubble cluster formation in shear-thinning inelastic bubbly columns

Textures and melt-crystal-gas interactions in granites

Three‐dimensional numerical simulation of coalescence and interactions of multiple horizontal bubbles rising in shear‐thinning fluids

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