Multi-scale simulations of stirred liquid-liquid dispersions

J. J. Derksen*, H. E. A. Van Den Akker

*Corresponding author for this work

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Direct numerical simulations (DNS) of liquid-liquid dispersions in a three-dimensional periodic domain have been performed by means of the lattice-Boltzmann method. The dispersion was agitated by a random force field such as to produce isotropic turbulence. The turbulence levels and its history were based on a fluid parcel in a turbulently stirred tank traversing the impeller swept region. The DNS provide detailed insight in the coalescence and break-up events brought about by the turbulent flow, the evolution of the drop size distribution in time, and the interaction of the small-scale flow and the droplets as witnessed in terms of the spectral characteristics of the turbulence.

Original languageEnglish
Pages (from-to)697-702
Number of pages6
JournalChemical Engineering Research & Design
Volume85
Issue number5
Early online date13 Mar 2006
DOIs
Publication statusPublished - 2007
Event12th European Conference on Mixing - Bologna, Italy
Duration: 27 Jun 200630 Jun 2006

Keywords

  • liquid-liquid dispersion
  • break-up
  • coalescence
  • turbulence
  • lattice-boltzmann
  • numerical simulation
  • Rayleigh-Taylor instability
  • homogeneous turbulence
  • shear flows
  • Boltzmann

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