Sprittles, James E. (2017) Kinetic effects in dynamic wetting. Physical Review Letters, 118 (11). 114502 . doi:10.1103/PhysRevLett.118.114502

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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
Subjects:	Q Science > QC Physics Q Science > QD Chemistry
Divisions:	Faculty of 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:	Date Event 17 March 2017 Published 3 February 2017 Accepted
Date of first compliant deposit:	8 February 2017
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
Funder:	Leverhulme Trust (LT), Engineering and Physical Sciences Research Council (EPSRC)
Grant number:	EP/N016602/1

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