Nonisothermal effects of vaporization under conditions of superheating of liquids in capillaries above the boiling point

Authors
Citation
Vl. Malyshev, Nonisothermal effects of vaporization under conditions of superheating of liquids in capillaries above the boiling point, HIGH TEMP, 36(6), 1998, pp. 915-919
Citations number
9
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
HIGH TEMPERATURE
ISSN journal
0018-151X → ACNP
Volume
36
Issue
6
Year of publication
1998
Pages
915 - 919
Database
ISI
SICI code
0018-151X(199811/12)36:6<915:NEOVUC>2.0.ZU;2-4
Abstract
A slower-than-theoretically-predicted rise of the rate of evaporation of li quid from capillaries with the intensification of the process is attributed to the effect of self-cooling of the surface of phase transition. The theo ry of this phenomenon is suggested. The transition (between Stefan and visc ous) mode of evaporation in the presence of longitudinal temperature gradie nt is treated. The equation is derived for the dependence of excess pressur e on temperature and channel radius. Expressions are found for the vapor fl ow, for the rate of interface shift, and for the time of evaporation. Compa rison is made with the experimental data.