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Lifetime of a nanodroplet : kinetic effects and regime transitions
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Rana, Anirudh Singh, Lockerby, Duncan A. and Sprittles, James E. (2019) Lifetime of a nanodroplet : kinetic effects and regime transitions. Physical Review Letters . (In Press)
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WRAP-lifetime-nanodroplet-kinetic-effects-regime-transitions-Lockerby-2019.pdf - Accepted Version - Requires a PDF viewer. Download (2292Kb) | Preview |
Official URL: https://journals.aps.org/prl/accepted/a1078Yf4J6d1...
Abstract
A transition from a
d
2
- to a
d
-law is observed in molecular dynamics (MD) simulations when the diameter (
d
) of an evaporating droplet reduces to the order of the vapor’s mean free path; this cannot be explained by classical theory. This Letter shows that the
d
-law can be predicted within the Navier-Stokes-Fourier (NSF) paradigm if a temperature-jump boundary condition derived from kinetic theory is utilised. The results from this model agree with those from MD in terms of the total lifetime, droplet radius and temperature; while the classical
d
2
-law under-predicts the lifetime of the droplet by a factor of two. Theories beyond NSF are also employed in order to investigate vapor rarefaction effects within the Knudsen layer adjacent to the interface.
| Item Type: | Journal Article | ||||||||||||||||||
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| Subjects: | Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software Q Science > QP Physiology T Technology > TA Engineering (General). Civil engineering (General) |
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| Divisions: | Faculty of Science > Engineering | ||||||||||||||||||
| Library of Congress Subject Headings (LCSH): | Molecular dynamics, Navier-Stokes equations , Fluid dynamics, Free molecular flow | ||||||||||||||||||
| Journal or Publication Title: | Physical Review Letters | ||||||||||||||||||
| Publisher: | American Physical Society | ||||||||||||||||||
| ISSN: | 0031-9007 | ||||||||||||||||||
| Official Date: | 20 August 2019 | ||||||||||||||||||
| Dates: |
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| Date of first compliant deposit: | 23 August 2019 | ||||||||||||||||||
| Status: | Peer Reviewed | ||||||||||||||||||
| Publication Status: | In Press | ||||||||||||||||||
| Publisher Statement: | © 2019 American Physical Society | ||||||||||||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||||||||||||
| RIOXX Funder/Project Grant: |
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