Simulations of gravity-driven flow of binary liquids in microchannels
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| Title: | Simulations of gravity-driven flow of binary liquids in microchannels |
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| Authors: | Kuzmin, A.1 kuzmin@ualberta.ca, Januszewski, M.2 michalj@gmail.com, Eskin, D.3 deskin@slb.com, Mostowfi, F.3 fmostowfi@slb.com, Derksen, J.J.1 jos@ualberta.ca |
| Source: | Chemical Engineering Journal. Jul2011, Vol. 171 Issue 2, p646-654. 9p. |
| Subjects: | Simulation methods & models, Binary metallic systems, Bubbles, Gravity, Thickness measurement, Lattice Boltzmann methods, Multiphase flow, Boundary value problems, Thin films |
| Abstract: | Abstract: In this work a free-energy binary liquid lattice-Boltzmann scheme is used to simulate Taylor/Bretherton flow in a micro-channel where elongated gas bubbles move through a liquid with thin liquid films between the bubbles and the channel walls. The numerical scheme has a diffuse interface, and a main focus of our work is to assess resolution requirements for correctly resolving the liquid film and bubble motion. The simulations are two-dimensional and span a capillary number range of 0.05–1.0 where the capillary number is based on the liquid dynamic viscosity, the velocity of the bubble, and the interfacial tension. The flow is driven by a body force, and periodic boundary conditions apply in the streamwise direction. We obtain grid independent results as long as the liquid film thickness is at least twice the width of the diffuse interface, with film thicknesses in accordance to literature results. We also show that the results in terms of film thicknesses are largely insensitive to the liquid–gas viscosity ratio and wettability parameters. [Copyright &y& Elsevier] |
| Copyright of Chemical Engineering Journal is the property of Elsevier B.V. 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: 61490118 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Simulations of gravity-driven flow of binary liquids in microchannels – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Kuzmin%2C+A%2E%22">Kuzmin, A.</searchLink><relatesTo>1</relatesTo><i> kuzmin@ualberta.ca</i><br /><searchLink fieldCode="AR" term="%22Januszewski%2C+M%2E%22">Januszewski, M.</searchLink><relatesTo>2</relatesTo><i> michalj@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Eskin%2C+D%2E%22">Eskin, D.</searchLink><relatesTo>3</relatesTo><i> deskin@slb.com</i><br /><searchLink fieldCode="AR" term="%22Mostowfi%2C+F%2E%22">Mostowfi, F.</searchLink><relatesTo>3</relatesTo><i> fmostowfi@slb.com</i><br /><searchLink fieldCode="AR" term="%22Derksen%2C+J%2EJ%2E%22">Derksen, J.J.</searchLink><relatesTo>1</relatesTo><i> jos@ualberta.ca</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Chemical+Engineering+Journal%22">Chemical Engineering Journal</searchLink>. Jul2011, Vol. 171 Issue 2, p646-654. 9p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Simulation+methods+%26+models%22">Simulation methods & models</searchLink><br /><searchLink fieldCode="DE" term="%22Binary+metallic+systems%22">Binary metallic systems</searchLink><br /><searchLink fieldCode="DE" term="%22Bubbles%22">Bubbles</searchLink><br /><searchLink fieldCode="DE" term="%22Gravity%22">Gravity</searchLink><br /><searchLink fieldCode="DE" term="%22Thickness+measurement%22">Thickness measurement</searchLink><br /><searchLink fieldCode="DE" term="%22Lattice+Boltzmann+methods%22">Lattice Boltzmann methods</searchLink><br /><searchLink fieldCode="DE" term="%22Multiphase+flow%22">Multiphase flow</searchLink><br /><searchLink fieldCode="DE" term="%22Boundary+value+problems%22">Boundary value problems</searchLink><br /><searchLink fieldCode="DE" term="%22Thin+films%22">Thin films</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Abstract: In this work a free-energy binary liquid lattice-Boltzmann scheme is used to simulate Taylor/Bretherton flow in a micro-channel where elongated gas bubbles move through a liquid with thin liquid films between the bubbles and the channel walls. The numerical scheme has a diffuse interface, and a main focus of our work is to assess resolution requirements for correctly resolving the liquid film and bubble motion. The simulations are two-dimensional and span a capillary number range of 0.05–1.0 where the capillary number is based on the liquid dynamic viscosity, the velocity of the bubble, and the interfacial tension. The flow is driven by a body force, and periodic boundary conditions apply in the streamwise direction. We obtain grid independent results as long as the liquid film thickness is at least twice the width of the diffuse interface, with film thicknesses in accordance to literature results. We also show that the results in terms of film thicknesses are largely insensitive to the liquid–gas viscosity ratio and wettability parameters. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Chemical Engineering Journal is the property of Elsevier B.V. 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: 10.1016/j.cej.2011.04.023 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 646 Subjects: – SubjectFull: Simulation methods & models Type: general – SubjectFull: Binary metallic systems Type: general – SubjectFull: Bubbles Type: general – SubjectFull: Gravity Type: general – SubjectFull: Thickness measurement Type: general – SubjectFull: Lattice Boltzmann methods Type: general – SubjectFull: Multiphase flow Type: general – SubjectFull: Boundary value problems Type: general – SubjectFull: Thin films Type: general Titles: – TitleFull: Simulations of gravity-driven flow of binary liquids in microchannels Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Kuzmin, A. – PersonEntity: Name: NameFull: Januszewski, M. – PersonEntity: Name: NameFull: Eskin, D. – PersonEntity: Name: NameFull: Mostowfi, F. – PersonEntity: Name: NameFull: Derksen, J.J. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 07 Text: Jul2011 Type: published Y: 2011 Identifiers: – Type: issn-print Value: 13858947 Numbering: – Type: volume Value: 171 – Type: issue Value: 2 Titles: – TitleFull: Chemical Engineering Journal Type: main |
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