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Kinetic effects in dynamic wetting
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Sprittles, James E. (2017) Kinetic effects in dynamic wetting. Physical Review Letters, 118 (11). 114502 . doi:10.1103/PhysRevLett.118.114502 ISSN 0031-9007.
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Official URL: https://doi.org/10.1103/PhysRevLett.118.114502
Abstract
The maximum speed at which a liquid can wet a solid is limited by the need to displace gas lubrication films in front of the moving contact line. The characteristic height of these films is often comparable to the mean free path in the gas so that hydrodynamic models do not adequately describe the flow physics. This Letter develops a model which incorporates kinetic effects in the gas, via the Boltzmann equation, and can predict experimentally-observed increases in the maximum speed of wetting when (a) the liquid’s viscosity is varied, (b) the ambient gas pressure is reduced or (c) the meniscus is confined.
Item Type: | Journal Article | ||||||
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Subjects: | Q Science > QC Physics Q Science > QD Chemistry |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||
Library of Congress Subject Headings (LCSH): | Wetting, Kinetic theory of gases, Transport theory | ||||||
Journal or Publication Title: | Physical Review Letters | ||||||
Publisher: | American Physical Society | ||||||
ISSN: | 0031-9007 | ||||||
Official Date: | 17 March 2017 | ||||||
Dates: |
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Volume: | 118 | ||||||
Number: | 11 | ||||||
Article Number: | 114502 | ||||||
DOI: | 10.1103/PhysRevLett.118.114502 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||
Date of first compliant deposit: | 8 February 2017 | ||||||
Date of first compliant Open Access: | 19 July 2017 | ||||||
Funder: | Leverhulme Trust (LT), Engineering and Physical Sciences Research Council (EPSRC) | ||||||
Grant number: | EP/N016602/1 |
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