‘Gobbling drops’: the jetting–dripping transition in flows of polymer solutions
This paper discusses the breakup of capillary jets of dilute polymer solutions and the dynamics associated with the transition from dripping to jetting. High-speed digital video imaging reveals a new scenario of transition and breakup via periodic growth and detachment of large terminal drops. The u...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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Cambridge University Press
2013
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| Online Access: | http://hdl.handle.net/1721.1/79686 https://orcid.org/0000-0001-8323-2779 |
| _version_ | 1826191203361619968 |
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| author | Clasen, C. Bico, J. Entov, V. M. McKinley, Gareth H |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Clasen, C. Bico, J. Entov, V. M. McKinley, Gareth H |
| author_sort | Clasen, C. |
| collection | MIT |
| description | This paper discusses the breakup of capillary jets of dilute polymer solutions and the dynamics associated with the transition from dripping to jetting. High-speed digital video imaging reveals a new scenario of transition and breakup via periodic growth and detachment of large terminal drops. The underlying mechanism is discussed and a basic theory for the mechanism of breakup is also presented. The dynamics of the terminal drop growth and trajectory prove to be governed primarily by mass and momentum balances involving capillary, gravity and inertial forces, whilst the drop detachment event is controlled by the kinetics of the thinning process in the viscoelastic ligaments that connect the drops. This thinning process of the ligaments that are subjected to a constant axial force is driven by surface tension and resisted by the viscoelasticity of the dissolved polymeric molecules. Analysis of this transition provides a new experimental method to probe the rheological properties of solutions when minute concentrations of macromolecules have been added. |
| first_indexed | 2024-09-23T08:52:13Z |
| format | Article |
| id | mit-1721.1/79686 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T08:52:13Z |
| publishDate | 2013 |
| publisher | Cambridge University Press |
| record_format | dspace |
| spelling | mit-1721.1/796862022-09-26T08:51:00Z ‘Gobbling drops’: the jetting–dripping transition in flows of polymer solutions Clasen, C. Bico, J. Entov, V. M. McKinley, Gareth H Massachusetts Institute of Technology. Department of Mechanical Engineering Massachusetts Institute of Technology. Hatsopoulos Microfluids Laboratory McKinley, Gareth H. This paper discusses the breakup of capillary jets of dilute polymer solutions and the dynamics associated with the transition from dripping to jetting. High-speed digital video imaging reveals a new scenario of transition and breakup via periodic growth and detachment of large terminal drops. The underlying mechanism is discussed and a basic theory for the mechanism of breakup is also presented. The dynamics of the terminal drop growth and trajectory prove to be governed primarily by mass and momentum balances involving capillary, gravity and inertial forces, whilst the drop detachment event is controlled by the kinetics of the thinning process in the viscoelastic ligaments that connect the drops. This thinning process of the ligaments that are subjected to a constant axial force is driven by surface tension and resisted by the viscoelasticity of the dissolved polymeric molecules. Analysis of this transition provides a new experimental method to probe the rheological properties of solutions when minute concentrations of macromolecules have been added. Schlumberger Foundation MIT Class of 1951 Fellowship Fund 2013-07-24T17:13:17Z 2013-07-24T17:13:17Z 2009-09 2009-05 Article http://purl.org/eprint/type/JournalArticle 0022-1120 1469-7645 http://hdl.handle.net/1721.1/79686 Clasen, C., J. Bico, V. M. Entov, and G. H. McKinley. ‘Gobbling Drops’: The Jetting–dripping Transition in Flows of Polymer Solutions. Journal of Fluid Mechanics 636 (October 25, 2009): 5. https://orcid.org/0000-0001-8323-2779 en_US http://dx.doi.org/10.1017/s0022112009008143 Journal of Fluid Mechanics Creative Commons Attribution-Noncommercial-Share Alike 3.0 http://creativecommons.org/licenses/by-nc-sa/3.0/ application/pdf Cambridge University Press MIT web domain |
| spellingShingle | Clasen, C. Bico, J. Entov, V. M. McKinley, Gareth H ‘Gobbling drops’: the jetting–dripping transition in flows of polymer solutions |
| title | ‘Gobbling drops’: the jetting–dripping transition in flows of polymer solutions |
| title_full | ‘Gobbling drops’: the jetting–dripping transition in flows of polymer solutions |
| title_fullStr | ‘Gobbling drops’: the jetting–dripping transition in flows of polymer solutions |
| title_full_unstemmed | ‘Gobbling drops’: the jetting–dripping transition in flows of polymer solutions |
| title_short | ‘Gobbling drops’: the jetting–dripping transition in flows of polymer solutions |
| title_sort | gobbling drops the jetting dripping transition in flows of polymer solutions |
| url | http://hdl.handle.net/1721.1/79686 https://orcid.org/0000-0001-8323-2779 |
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