Mixing of viscous immiscible liquids. Part 2: Overemulsification-interpretation and use

P. DeRoussel, D. V. Khakhar, J. M. Ottino*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


In mixing of immiscible fluids, the final steady state drop size distribution, corresponding to a minimum mean drop size, is commonly approached in a monotonic way. There are, however, other scenarios. Overemulsification refers to cases where, (1) after reaching a minimum, the average size increases and then levels off of a final size, or (II) the average size oscillates. In case (I) the drop size distribution becomes bimodal after the average size goes through a minimum; gradually, the peak at smaller sizes moves towards the peak at larger sizes resulting in a narrow distribution. An explanation of this phenomenon is offered and ways to exploit it are suggested.

Original languageEnglish (US)
Pages (from-to)5531-5537
Number of pages7
JournalChemical Engineering Science
Issue number19
StatePublished - Oct 8 2001


  • Dispersion
  • Drop size distributions
  • Liquids
  • Mixing
  • Overemulsification
  • Polymer processing

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering


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