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On evaporation rate and interfacial temperature of volatile sessile drops
journal contribution
posted on 2017-07-18, 13:03 authored by Victor Starov, Khellil SefianeA theoretical description of the evaporation of sessile drops is proposed. The linear dependency of the evaporation rate on droplet’s base radius is described as well as the interfacial temperature. The analysis shows that most of evaporation is indeed concentrated near the contact line as demonstrated by experiments from literature. The evaporative cooling induced by evaporation results in a non-uniform temperature profile along the interface, being colder on the apex and hotter near the contact line. This result is counter-intuitive. It is the reason why the physical explanations are provided. Interfacial temperature gradient leads to Marangoni thermocpaillary driven flow within the drop.
Funding
V. Starov acknowledges a support by the Engineering and Physical Sciences Research Council, UK (Grant EP/D077869/1).
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Chemical Engineering
Published in
Collaoids and Surfaces A: Physicochem. Eng. AspectsVolume
333Pages
170 - 174Citation
STAROV, V. and SEFIANE, K., 2009. On evaporation rate and interfacial temperature of volatile sessile drops. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 333, pp. 170-174.Publisher
© ElsevierVersion
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2009Notes
This paper is in closed access.ISSN
0927-7757Publisher version
Language
- en