Effects of capillary force and surface deformation on particle removal in turbulent flows

Xinyu Zhang, Goodarz Ahmadi

Research output: Journal PublicationArticlepeer-review

14 Citations (Scopus)

Abstract

A new rolling detachment model for particle removal in the presence of capillary forces based on the maximum adhesion resistance was developed. The new model uses an effective thermodynamic work of adhesion model that includes the effects of capillary forces generated by the formation of liquid meniscus at the interface. The JKR and DMT models for elastic particle and surface deformations and the Maugis and Pollock model for the plastic deformation were extended to include the effect of capillary forces. Under turbulent flow conditions, the criteria for incipient rolling detachments were evaluated. The turbulence burst model was used to evaluate the air velocity near the substrate. The critical shear velocities for resuspension of particles of different sizes were evaluated and the results were compared with those without capillary force. The model predictions were compared with the available experimental data and good agreement was found.

Original languageEnglish
Pages (from-to)1589-1611
Number of pages23
JournalJournal of Adhesion Science and Technology
Volume21
Issue number16
DOIs
Publication statusPublished - 1 Nov 2007
Externally publishedYes

Keywords

  • Capillary force
  • Elastic deformation
  • Particle adhesion
  • Particle removal
  • Plastic deformation
  • Resuspension
  • Surface tension

ASJC Scopus subject areas

  • Chemistry (all)
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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