Micro particle detachment in turbulent flows with electrostatic and capillary efects and surface deformation

Xinyu Zhang, Goodarz Ahmadi

Research output: Chapter in Book/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

Rolling detachment of micro particles in the presence of electrostatic and capillary forces based on the maximum adhesion resistance was studied. The effective thermodynamic work of adhesion including the effects of electrostatic and capillary forces was used in the analysis. The JKR and DMT models for elastic interface deformations and the Maugis-Pollock model for the plastic deformation were extended to include the effect of electrostatic and capillary forces. Under turbulent flow conditions, the turbulence burst model was used to evaluate the airflow velocity near the substrate. The critical shear velocities for removal of particles of different sizes were evaluated and the results were compared with those without electrostatic and capillary forces. It shows that the capillary forces significantly increases the critical shear velocities for particles of all sizes, while the electrostatic forces only have major effects on large particles. The model predictions were compared with the available experimental data and good agreement was observed.

Original languageEnglish
Title of host publicationProceedings of the ASME Fluids Engineering Division Summer Conference 2009, FEDSM2009
Pages667-673
Number of pages7
EditionPART A
DOIs
Publication statusPublished - 2009
Externally publishedYes
Event2009 ASME Fluids Engineering Division Summer Conference, FEDSM2009 - Vail, CO, United States
Duration: 2 Aug 20096 Aug 2009

Publication series

NameProceedings of the ASME Fluids Engineering Division Summer Conference 2009, FEDSM2009
NumberPART A
Volume1

Conference

Conference2009 ASME Fluids Engineering Division Summer Conference, FEDSM2009
Country/TerritoryUnited States
CityVail, CO
Period2/08/096/08/09

Keywords

  • Capillary force
  • Elastic deformation
  • Electrostatic force
  • Particle adhesion
  • Particle removal
  • Plastic deformation
  • Resuspension

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Mechanical Engineering

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