A hybrid sectional-moment model for coagulation and phase segregation in binary liquid nanodroplets

Yalchin Efendiev, H. Struchtrup, M. Luskin, M. R. Zachariah*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

We describe a new formulation of the aerosol general dynamic equation (GDE) that incorporates the phase segregation in a binary aerosol. The model assumes that complete phase segregation is the thermodynamically favored state, that no thermodynamic activation energy exists, and that the segregation process is kinetically controlled. We develop a GDE formulation that involves the solution of a distribution function Nn,σ (V), where Nn,σ (V) is the number density of aerosols with volume V and n phase domains (which we might think of as enclosures) with an enclosure size distribution characterized by σ. The model improves our earlier efforts (Struchtrup H., M. Luskin & M. Zachariah, 2001. J. Aerosol Sci. 15(3)) which did not account for the enclosure size distribution. The description of the enclosures is based on a moment approach relying on a log-normal distribution (Park S., K. Lee, E. Otto & H. Fissan, 1999. J. Aerosol Sci. 30, 3-16). As with our earlier model, we obtain an increase of the mean number of enclosures per droplet in time, in disagreement to experimental results. The reasons for the disagreement are discussed.

Original languageEnglish (US)
Pages (from-to)61-72
Number of pages12
JournalJournal of Nanoparticle Research
Volume4
Issue number1-2
DOIs
StatePublished - Dec 1 2002

Keywords

  • Collision probability
  • Heterogeneous aerosols
  • Log-normal distribution
  • Smoluchowski equation

ASJC Scopus subject areas

  • Bioengineering
  • Atomic and Molecular Physics, and Optics
  • Chemistry(all)
  • Modeling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics

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