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Mean-field kinetic theory approach to evaporation of a binary liquid into vacuum
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Frezzotti, Aldo, Gibelli, Livio, Lockerby, Duncan A. and Sprittles, James E. (2018) Mean-field kinetic theory approach to evaporation of a binary liquid into vacuum. Physical Review Fluids, 3 (5). 054001 . doi:10.1103/PhysRevFluids.3.054001 ISSN 2469-990X.
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Official URL: https://doi.org/10.1103/PhysRevFluids.3.054001
Abstract
Evaporation of a binary liquid into near vacuum conditions has been studied using numerical solutions of a system of two coupled Enskog-Vlasov equations. Liquidvapor coexistence curves have been mapped out for different liquid compositions. The evaporation process has been investigated at a range of liquid temperatures sufficiently lower than the critical one for the vapor not to significantly deviate from the ideal behaviour. It is found that the shape of the distribution functions of evaporating atoms is well approximated by an anisotropic Maxwellian distribution with different characteristic temperatures for velocity components normal and parallel to the liquid-vapor interface. The anisotropy reduces as the evaporation temperature decreases. Evaporation coefficients are computed based on the separation temperature and the maximum concentration of the less volatile component close to the liquid-vapor interface. This choice leads to values which are almost constant in the simulation conditions.
| Item Type: | Journal Article | |||||||||||||||
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| Subjects: | Q Science > QA Mathematics | |||||||||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering Faculty of Science, Engineering and Medicine > Science > Mathematics |
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| Library of Congress Subject Headings (LCSH): | Mean field theory, Kinetic theory of liquids, Evaporation, Enskog equation, Nonequilibrium thermodynamics | |||||||||||||||
| Journal or Publication Title: | Physical Review Fluids | |||||||||||||||
| Publisher: | American Physical Society | |||||||||||||||
| ISSN: | 2469-990X | |||||||||||||||
| Official Date: | 14 May 2018 | |||||||||||||||
| Dates: |
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| Volume: | 3 | |||||||||||||||
| Number: | 5 | |||||||||||||||
| Article Number: | 054001 | |||||||||||||||
| DOI: | 10.1103/PhysRevFluids.3.054001 | |||||||||||||||
| Status: | Peer Reviewed | |||||||||||||||
| Publication Status: | Published | |||||||||||||||
| Access rights to Published version: | Restricted or Subscription Access | |||||||||||||||
| Date of first compliant deposit: | 16 April 2018 | |||||||||||||||
| Date of first compliant Open Access: | 24 May 2018 | |||||||||||||||
| RIOXX Funder/Project Grant: |
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