Plumes of settling and dissolving sugar grains.
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| Title: | Plumes of settling and dissolving sugar grains. |
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| Authors: | Kriaa, Quentin1,2,3 (AUTHOR) qk207@cam.ac.uk, Favier, Benjamin1,2 (AUTHOR), Le Bars, Michael1,3 (AUTHOR) |
| Source: | Journal of Fluid Mechanics. 11/10/2025, Vol. 1022, p1-37. 37p. |
| Subjects: | Fluid dynamics, Plumes (Fluid dynamics), Sugar, Precipitation (Chemistry), Dissolution (Chemistry), Rayleigh-Taylor instability, Laminar flow, Particle image velocimetry |
| Abstract: | We present experiments of settling and dissolving sugar grains continuously sieved above a water tank with varying grain size and mass flux. Through drag and dissolution, grains force a downward flow whose dynamics are analysed in a laser sheet through particle image velocimetry and the use of home-made fluorescent sugar to track the negatively buoyant sugary water. We reveal different regimes, mostly controlled by the grain size, from a particle-constrained laminar flow at large grain size, to a turbulent plume with an effectively fluid-like behaviour when grains are small. The transitions between regimes are predicted from dimensionless numbers quantifying fluid–particle coupling, collective effects between grains and the possible onset of a Rayleigh–Taylor instability at the source. When a quasi-steady regime is reached, all grains dissolve above a finite depth, below which the flow is exclusively driven by dissolved sugar. We derive simple idealised models based on the source properties that predict the depth of this dissolution layer as well as the characteristic flow velocity. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Fluid Mechanics is the property of Cambridge University Press and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 189831693 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Plumes of settling and dissolving sugar grains. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Kriaa%2C+Quentin%22">Kriaa, Quentin</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<i> qk207@cam.ac.uk</i><br /><searchLink fieldCode="AR" term="%22Favier%2C+Benjamin%22">Favier, Benjamin</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Le+Bars%2C+Michael%22">Le Bars, Michael</searchLink><relatesTo>1,3</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Fluid+Mechanics%22">Journal of Fluid Mechanics</searchLink>. 11/10/2025, Vol. 1022, p1-37. 37p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Fluid+dynamics%22">Fluid dynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Plumes+%28Fluid+dynamics%29%22">Plumes (Fluid dynamics)</searchLink><br /><searchLink fieldCode="DE" term="%22Sugar%22">Sugar</searchLink><br /><searchLink fieldCode="DE" term="%22Precipitation+%28Chemistry%29%22">Precipitation (Chemistry)</searchLink><br /><searchLink fieldCode="DE" term="%22Dissolution+%28Chemistry%29%22">Dissolution (Chemistry)</searchLink><br /><searchLink fieldCode="DE" term="%22Rayleigh-Taylor+instability%22">Rayleigh-Taylor instability</searchLink><br /><searchLink fieldCode="DE" term="%22Laminar+flow%22">Laminar flow</searchLink><br /><searchLink fieldCode="DE" term="%22Particle+image+velocimetry%22">Particle image velocimetry</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: We present experiments of settling and dissolving sugar grains continuously sieved above a water tank with varying grain size and mass flux. Through drag and dissolution, grains force a downward flow whose dynamics are analysed in a laser sheet through particle image velocimetry and the use of home-made fluorescent sugar to track the negatively buoyant sugary water. We reveal different regimes, mostly controlled by the grain size, from a particle-constrained laminar flow at large grain size, to a turbulent plume with an effectively fluid-like behaviour when grains are small. The transitions between regimes are predicted from dimensionless numbers quantifying fluid–particle coupling, collective effects between grains and the possible onset of a Rayleigh–Taylor instability at the source. When a quasi-steady regime is reached, all grains dissolve above a finite depth, below which the flow is exclusively driven by dissolved sugar. We derive simple idealised models based on the source properties that predict the depth of this dissolution layer as well as the characteristic flow velocity. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Fluid Mechanics is the property of Cambridge University Press and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1017/jfm.2025.10766 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 37 StartPage: 1 Subjects: – SubjectFull: Fluid dynamics Type: general – SubjectFull: Plumes (Fluid dynamics) Type: general – SubjectFull: Sugar Type: general – SubjectFull: Precipitation (Chemistry) Type: general – SubjectFull: Dissolution (Chemistry) Type: general – SubjectFull: Rayleigh-Taylor instability Type: general – SubjectFull: Laminar flow Type: general – SubjectFull: Particle image velocimetry Type: general Titles: – TitleFull: Plumes of settling and dissolving sugar grains. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Kriaa, Quentin – PersonEntity: Name: NameFull: Favier, Benjamin – PersonEntity: Name: NameFull: Le Bars, Michael IsPartOfRelationships: – BibEntity: Dates: – D: 10 M: 11 Text: 11/10/2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 00221120 Numbering: – Type: volume Value: 1022 Titles: – TitleFull: Journal of Fluid Mechanics Type: main |
| ResultId | 1 |
