Droplet-droplet interactions in spray drying by using 2D computational fluid dynamic

M. Mezhericher, A. Levy, I. Borde

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

A 2D axisymmetric model of the spray drying process is presented. The two-phase flow theoretical model is based on a combined Eulerian-Lagrangian approach and takes binary interactions (coalescence or bouncing) between spray droplets into consideration. Validation of the model (incorporated in FLUENT 6.3.26) demonstrated good agreement and consistency with the literature data. The results of transient simulations showed that droplet-droplet interactions displace the region of heat and mass transfer from the central core toward the periphery of the drying chamber. It was also found that insulation of the spray dryer can substantially affect temperature and humidity patterns, whereas its influence on the velocity flow field is less marked.

Original languageEnglish
Pages (from-to)265-282
Number of pages18
JournalDrying Technology
Volume26
Issue number3
DOIs
StatePublished - 28 Aug 2008

Keywords

  • Computational fluid dynamics
  • Droplet-droplet interactions
  • Flow pattern
  • Spray drying
  • Two-phase flow

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