A note on the modelling of lubrication forces in unresolved simulations

Tim M.J. Nijssen*, Marcel Ottens, Johan T. Padding

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

Lubrication forces play a major role in the behaviour of fluid–solid systems, where they affect the collisions between particles. Current implementations of lubrication forces in unresolved simulations often suffer from shortcomings, such as neglecting parts of the physics or relying on arbitrarily defined parameters. In this short communication, we propose a novel implementation, rigorously defined based on physical and numerical factors. Both particle roughness and deformation are considered, and the model accuracy is demonstrated through comparison with experimental results.

Original languageEnglish
Article number118017
Number of pages5
JournalPowder Technology
Volume413
DOIs
Publication statusPublished - 2023

Keywords

  • CFD-DEM
  • Fluid–solid systems
  • Lubrication force
  • Multiphase modelling
  • Unresolved simulations

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