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Bouncing off the walls : the influence of gas-kinetic and van der Waals effects in drop impact
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Chubynsky, Mykyta, Belousov, Kirill I., Lockerby, Duncan A. and Sprittles, James E. (2020) Bouncing off the walls : the influence of gas-kinetic and van der Waals effects in drop impact. Physical Review Letters, 124 (8). 084501. doi:10.1103/PhysRevLett.124.084501 ISSN 0031-9007.
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Official URL: http://dx.doi.org/10.1103/PhysRevLett.124.084501
Abstract
A model is developed for liquid drop impact on a solid surface that captures the thin film gas flow beneath the drop, even when the film’s thickness is below the mean free path in the gas so that gas kinetic effects (GKE) are important. Simulation results agree with experiments, with the impact speed threshold between bouncing and wetting reproduced to within 5 least 50 mapped and provides experimentally verifiable predictions. There are two principal modes of contact leading to wetting and both are associated with a van der Waals driven instability of the film.
Item Type: | Journal Article | |||||||||||||||
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Subjects: | Q Science > QA Mathematics Q Science > QC Physics |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Mathematics | |||||||||||||||
Library of Congress Subject Headings (LCSH): | Kinetic theory of gases, Van der Waals forces, Van der Waals forces -- Simulation methods, Fluid dynamics -- Drops -- Mathematical models | |||||||||||||||
Journal or Publication Title: | Physical Review Letters | |||||||||||||||
Publisher: | American Physical Society | |||||||||||||||
ISSN: | 0031-9007 | |||||||||||||||
Official Date: | 26 February 2020 | |||||||||||||||
Dates: |
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Volume: | 124 | |||||||||||||||
Number: | 8 | |||||||||||||||
Article Number: | 084501 | |||||||||||||||
DOI: | 10.1103/PhysRevLett.124.084501 | |||||||||||||||
Status: | Peer Reviewed | |||||||||||||||
Publication Status: | Published | |||||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | |||||||||||||||
Copyright Holders: | © 2020 American Physical Society | |||||||||||||||
Date of first compliant deposit: | 15 January 2020 | |||||||||||||||
Date of first compliant Open Access: | 22 January 2020 | |||||||||||||||
RIOXX Funder/Project Grant: |
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