A numerical investigation on the drainage of a surfactant-modified water droplet in paraffin oil
A volume of fluid approach is used in numerical simulations of the settling motion of a surfactant modified water droplet in a continuous paraffin oil phase. The droplet is millimeter-sized and confined in a square two dimensional domain. The surfactant interfacial and bulk concentration-equations a...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Lekhlifi, Adil [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2015 |
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| Rechteinformationen: |
Nutzungsrecht: Copyright © 2015 Elsevier B.V. All rights reserved. © COPYRIGHT 2015 Elsevier B.V. |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Advances in colloid and interface science - Amsterdam : Elsevier, 1967, 222(2015), Seite 446 |
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| Übergeordnetes Werk: |
volume:222 ; year:2015 ; pages:446 |
| Links: |
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| DOI / URN: |
10.1016/j.cis.2015.02.005 |
|---|
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OLC1963759540 |
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| 520 | |a A volume of fluid approach is used in numerical simulations of the settling motion of a surfactant modified water droplet in a continuous paraffin oil phase. The droplet is millimeter-sized and confined in a square two dimensional domain. The surfactant interfacial and bulk concentration-equations are solved together with the incompressible Navier-Stokes equation. The role of boundary walls in the overall settling dynamics is described. As the droplet moves downwards the interfacial shear creates non-homogeneous interfacial surfactant concentrations and Marangoni driven phenomena come into play. A decrease of the drainage velocity is then evidenced indicating that buoyancy forces are counter balanced by Marangoni induced lift-forces. The lateral migration of the droplet due to boundary wall proximity is discussed. It is shown to increase with wall proximity and to decrease when increasing the interfacial concentration. Finally, a simplified model is used to investigate the evolution of the bulk concentration assuming the surfactant is insoluble in paraffin oil and poorly soluble in water. | ||
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| 700 | 1 | |a Antoni, Mickaël |4 oth | |
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10.1016/j.cis.2015.02.005 doi PQ20160617 (DE-627)OLC1963759540 (DE-599)GBVOLC1963759540 (PRQ)g1420-1c77a06e90fd1f7819e95a66826a6a260bb8675fadd9aad086c4cfb9f43c40300 (KEY)0020706320150000222000000446numericalinvestigationonthedrainageofasurfactantmo DE-627 ger DE-627 rakwb eng 540 660 DNB Lekhlifi, Adil verfasserin aut A numerical investigation on the drainage of a surfactant-modified water droplet in paraffin oil 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier A volume of fluid approach is used in numerical simulations of the settling motion of a surfactant modified water droplet in a continuous paraffin oil phase. The droplet is millimeter-sized and confined in a square two dimensional domain. The surfactant interfacial and bulk concentration-equations are solved together with the incompressible Navier-Stokes equation. The role of boundary walls in the overall settling dynamics is described. As the droplet moves downwards the interfacial shear creates non-homogeneous interfacial surfactant concentrations and Marangoni driven phenomena come into play. A decrease of the drainage velocity is then evidenced indicating that buoyancy forces are counter balanced by Marangoni induced lift-forces. The lateral migration of the droplet due to boundary wall proximity is discussed. It is shown to increase with wall proximity and to decrease when increasing the interfacial concentration. Finally, a simplified model is used to investigate the evolution of the bulk concentration assuming the surfactant is insoluble in paraffin oil and poorly soluble in water. Nutzungsrecht: Copyright © 2015 Elsevier B.V. All rights reserved. © COPYRIGHT 2015 Elsevier B.V. Surface active agents Investigations Fanzar, Abdelaziz oth Antoni, Mickaël oth Enthalten in Advances in colloid and interface science Amsterdam : Elsevier, 1967 222(2015), Seite 446 (DE-627)129512656 (DE-600)210507-X (DE-576)014920484 0001-8686 nnns volume:222 year:2015 pages:446 http://dx.doi.org/10.1016/j.cis.2015.02.005 Volltext http://www.ncbi.nlm.nih.gov/pubmed/25772623 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_70 AR 222 2015 446 |
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A numerical investigation on the drainage of a surfactant-modified water droplet in paraffin oil |
| abstract |
A volume of fluid approach is used in numerical simulations of the settling motion of a surfactant modified water droplet in a continuous paraffin oil phase. The droplet is millimeter-sized and confined in a square two dimensional domain. The surfactant interfacial and bulk concentration-equations are solved together with the incompressible Navier-Stokes equation. The role of boundary walls in the overall settling dynamics is described. As the droplet moves downwards the interfacial shear creates non-homogeneous interfacial surfactant concentrations and Marangoni driven phenomena come into play. A decrease of the drainage velocity is then evidenced indicating that buoyancy forces are counter balanced by Marangoni induced lift-forces. The lateral migration of the droplet due to boundary wall proximity is discussed. It is shown to increase with wall proximity and to decrease when increasing the interfacial concentration. Finally, a simplified model is used to investigate the evolution of the bulk concentration assuming the surfactant is insoluble in paraffin oil and poorly soluble in water. |
| abstractGer |
A volume of fluid approach is used in numerical simulations of the settling motion of a surfactant modified water droplet in a continuous paraffin oil phase. The droplet is millimeter-sized and confined in a square two dimensional domain. The surfactant interfacial and bulk concentration-equations are solved together with the incompressible Navier-Stokes equation. The role of boundary walls in the overall settling dynamics is described. As the droplet moves downwards the interfacial shear creates non-homogeneous interfacial surfactant concentrations and Marangoni driven phenomena come into play. A decrease of the drainage velocity is then evidenced indicating that buoyancy forces are counter balanced by Marangoni induced lift-forces. The lateral migration of the droplet due to boundary wall proximity is discussed. It is shown to increase with wall proximity and to decrease when increasing the interfacial concentration. Finally, a simplified model is used to investigate the evolution of the bulk concentration assuming the surfactant is insoluble in paraffin oil and poorly soluble in water. |
| abstract_unstemmed |
A volume of fluid approach is used in numerical simulations of the settling motion of a surfactant modified water droplet in a continuous paraffin oil phase. The droplet is millimeter-sized and confined in a square two dimensional domain. The surfactant interfacial and bulk concentration-equations are solved together with the incompressible Navier-Stokes equation. The role of boundary walls in the overall settling dynamics is described. As the droplet moves downwards the interfacial shear creates non-homogeneous interfacial surfactant concentrations and Marangoni driven phenomena come into play. A decrease of the drainage velocity is then evidenced indicating that buoyancy forces are counter balanced by Marangoni induced lift-forces. The lateral migration of the droplet due to boundary wall proximity is discussed. It is shown to increase with wall proximity and to decrease when increasing the interfacial concentration. Finally, a simplified model is used to investigate the evolution of the bulk concentration assuming the surfactant is insoluble in paraffin oil and poorly soluble in water. |
| collection_details |
GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_70 |
| title_short |
A numerical investigation on the drainage of a surfactant-modified water droplet in paraffin oil |
| url |
http://dx.doi.org/10.1016/j.cis.2015.02.005 http://www.ncbi.nlm.nih.gov/pubmed/25772623 |
| remote_bool |
false |
| author2 |
Fanzar, Abdelaziz Antoni, Mickaël |
| author2Str |
Fanzar, Abdelaziz Antoni, Mickaël |
| ppnlink |
129512656 |
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| isOA_txt |
false |
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| author2_role |
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| doi_str |
10.1016/j.cis.2015.02.005 |
| up_date |
2024-07-04T06:27:56.066Z |
| _version_ |
1803628813803847680 |
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| score |
7.400667 |