Turbulent resuspension of small nondeformable particles

Mihalis Lazaridis, Yannis Drossinos, Panos G. Georgopoulos

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

An energy-balance resuspension model is modified and applied to the resuspension of a monolayer of nondeformable spherical particles. The particle-surface adhesive force is calculated from a microscopic model based on the Lennard-Jones intermolecular potential. Pairwise additivity of intermolecular interactions is assumed and elastic flattening of the particles is neglected. From the resulting particle-surface interaction potential the natural frequency of vibration of a particle on a surface and the depth of the potential well are calculated. The particle resuspension rate is calculated using the results of a previously developed energy- balance model, where the influence of fluid flow on the bound particle motion is recognized. The effect of surface roughness is included by introducing an effective particle radius that results in log-normally distributed adhesive forces. The predictions of the model are compared with experimental results for the resuspension of Al2O3 particles from stainless steel surfaces.

Original languageEnglish (US)
Pages (from-to)24-32
Number of pages9
JournalJournal of Colloid And Interface Science
Volume204
Issue number1
DOIs
StatePublished - Aug 1 1998

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Biomaterials
  • Colloid and Surface Chemistry

Keywords

  • Adhesion
  • Energy-balance model
  • Lennard-Jones interaction
  • Resuspension

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