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  4. Simulation of the influence of surface tension on granule morphology during spray drying using a simple capillary force model
 
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2015
Journal Article
Title

Simulation of the influence of surface tension on granule morphology during spray drying using a simple capillary force model

Abstract
Spray drying is an important process in powder technology as it transforms fine primary powder into processable granules. While various investigations of granule formation exist, the role of surface tension on the evolution of the granule morphology has not been investigated in much detail. This work closes this gap by using numerical simulations on granule level. In our simulation of suspensions of solid particles, we use the Discrete Element Method (DEM) in combination with a CFD solver. Due to the free liquid surface, a multiphase solver is needed including a force model for the particle-surface contact. As a result, our work gives insight into the granule formation and reveals a clear non-linear dependency relating high surface tension to dense granules.
Author(s)
Breinlinger, T.
Hashibon, A.
Kraft, T.
Journal
Powder Technology  
Project(s)
SIMPHONY  
Funder
European Commission EC  
Open Access
DOI
10.24406/publica-r-240812
10.1016/j.powtec.2015.05.009
File(s)
N-352030.pdf (1.15 MB)
Language
English
Fraunhofer-Institut für Werkstoffmechanik IWM  
Keyword(s)
  • spray drying

  • granulation

  • morphology

  • surface tension

  • cappilary force

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