Kinetics of Evaporation of Pinned Nanofluid Volatile Droplets at Subatmospheric Pressures

Daniel Orejon, Martin E.R. Shanahan, Yasuyuki Takata, Khellil Sefiane

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2 Citations (Scopus)

Abstract

We examine the effects of nanoparticle addition at low concentration on the evaporation kinetics of droplets in the constant radius mode. The evaporative behavior of deionized water and Al2O3 nanoparticle laden water on an aluminum substrate was observed at atmospheric and at different subatmospheric pressures. The two fluids exhibit the same evaporative behavior, independent of the droplet volume or the subatmospheric pressure. Moreover, the linear relationship between evaporation rate and droplet radius, initially proposed by Picknett and Bexon nearly four decades ago for droplets evaporating in the constant radius mode, is satisfied for both liquids. In addition, we have established a unified correlation solely function of fluid properties that extends this relationship to any subatmospheric pressure and fluid tested. We conclude that the addition of a small quantity of nanoparticles to the base fluid does not modify the kinetics of evaporation for pinned volatile droplets.

Original languageEnglish
Pages (from-to)5812-5820
Number of pages9
JournalLangmuir
Volume32
Issue number23
DOIs
Publication statusPublished - Jun 14 2016

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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