The Library
Velocity distribution function of spontaneously evaporating atoms
Tools
Tools
Tools
Busuioc, Sergiu, Gibelli, Livio, Lockerby, Duncan A. and Sprittles, James E. (2020) Velocity distribution function of spontaneously evaporating atoms. Physical Review Fluids, 5 (10). 103401. doi:10.1103/PhysRevFluids.5.103401
|
PDF
WRAP-On-velocity-distribution-function-spontaneously-Lockerby-2020.pdf - Accepted Version - Requires a PDF viewer. Download (2248Kb) | Preview |
Official URL: http://dx.doi.org/10.1103/PhysRevFluids.5.103401
Abstract
Numerical solutions of the Enskog-Vlasov (EV) equation are used to determine the velocity distribution function of atoms spontaneously evaporating into near-vacuum conditions. It is found that an accurate approximation is provided by a half-Maxwellian including a drift velocity combined with different characteristic temperatures for the velocity components normal and parallel to the liquid-vapor interface. The drift velocity and the temperature anisotropy reduce as the liquid bulk temperature decreases but persist for relatively low temperatures corresponding to a vapor behaviour which is only slightly non-ideal. Deviations from the undrifted isotropic half-Maxwellian are shown to be consequences of collisions in the liquid-vapor interface which preferentially backscatter atoms with lower normal-velocity component.
| Item Type: | Journal Article | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics T Technology > TA Engineering (General). Civil engineering (General) |
||||||||||||||||||
| Divisions: | Faculty of Science > Engineering | ||||||||||||||||||
| Library of Congress Subject Headings (LCSH): | Gas-liquid interfaces, Fluid mechanics , Kinetic theory of liquids , Free molecular flow | ||||||||||||||||||
| Journal or Publication Title: | Physical Review Fluids | ||||||||||||||||||
| Publisher: | American Physical Society | ||||||||||||||||||
| ISSN: | 2469-990X | ||||||||||||||||||
| Official Date: | 12 October 2020 | ||||||||||||||||||
| Dates: |
|
||||||||||||||||||
| Volume: | 5 | ||||||||||||||||||
| Number: | 10 | ||||||||||||||||||
| Article Number: | 103401 | ||||||||||||||||||
| DOI: | 10.1103/PhysRevFluids.5.103401 | ||||||||||||||||||
| Status: | Peer Reviewed | ||||||||||||||||||
| Publication Status: | Published | ||||||||||||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||||||||||||
| Copyright Holders: | © 2020 American Physical Society | ||||||||||||||||||
| RIOXX Funder/Project Grant: |
|
Request changes or add full text files to a record
Repository staff actions (login required)
 |
View Item |
Downloads
Downloads per month over past year
