The lifetimes of evaporating sessile droplets are significantly extended by strong thermal effects

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Abstract

The evaporation of sessile droplets is analysed when the influence of the thermal properties of the system is strong. We obtain asymptotic solutions for the evolution, and hence explicit expressions for the lifetimes, of droplets when the substrate has a high thermal resistance relative to the droplet and when the saturation concentration of the vapour depends strongly on temperature. In both situations we find that the lifetimes of the droplets are significantly extended relative to those when thermal effects are weak.
LanguageEnglish
Pages231-244
Number of pages14
JournalJournal of Fluid Mechanics
Volume851
Early online date19 Jul 2018
DOIs
Publication statusPublished - 25 Sep 2018

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Thermal Effects
Droplet
Thermal effects
temperature effects
Lifetime
life (durability)
thermal resistance
Thermal Resistance
thermodynamic properties
Thermal Properties
Asymptotic Solution
evaporation
vapors
Evaporation
saturation
Saturation
Substrate
Heat resistance
Thermodynamic properties
Vapors

Keywords

  • evaporation
  • thermal properties
  • sessile droplets
  • lifetimes
  • thermal resistance

Cite this

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title = "The lifetimes of evaporating sessile droplets are significantly extended by strong thermal effects",
abstract = "The evaporation of sessile droplets is analysed when the influence of the thermal properties of the system is strong. We obtain asymptotic solutions for the evolution, and hence explicit expressions for the lifetimes, of droplets when the substrate has a high thermal resistance relative to the droplet and when the saturation concentration of the vapour depends strongly on temperature. In both situations we find that the lifetimes of the droplets are significantly extended relative to those when thermal effects are weak.",
keywords = "evaporation, thermal properties, sessile droplets, lifetimes, thermal resistance",
author = "Schofield, {F. G. H.} and Wilson, {S. K.} and D. Pritchard and K. Sefiane",
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AU - Schofield, F. G. H.

AU - Wilson, S. K.

AU - Pritchard, D.

AU - Sefiane, K.

PY - 2018/9/25

Y1 - 2018/9/25

N2 - The evaporation of sessile droplets is analysed when the influence of the thermal properties of the system is strong. We obtain asymptotic solutions for the evolution, and hence explicit expressions for the lifetimes, of droplets when the substrate has a high thermal resistance relative to the droplet and when the saturation concentration of the vapour depends strongly on temperature. In both situations we find that the lifetimes of the droplets are significantly extended relative to those when thermal effects are weak.

AB - The evaporation of sessile droplets is analysed when the influence of the thermal properties of the system is strong. We obtain asymptotic solutions for the evolution, and hence explicit expressions for the lifetimes, of droplets when the substrate has a high thermal resistance relative to the droplet and when the saturation concentration of the vapour depends strongly on temperature. In both situations we find that the lifetimes of the droplets are significantly extended relative to those when thermal effects are weak.

KW - evaporation

KW - thermal properties

KW - sessile droplets

KW - lifetimes

KW - thermal resistance

UR - https://www.cambridge.org/core/journals/journal-of-fluid-mechanics

U2 - 10.1017/jfm.2018.496

DO - 10.1017/jfm.2018.496

M3 - Article

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