Rolling detachment of micro particles in turbulent flows under the presence of electrostatic and capillary forces was studied. The maximum adhesion resistance model and the effective thermodynamic work of adhesion including the effects of electrostatic and capillary forces were 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. 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. The relative critical shear velocities as well as the material dependence were also studied. The effect of the direction of the combined Coulomb force was also included. The predictions of the electric detachment fields for particles were compared with the available experimental data and good agreement was observed.
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ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels
August 1–5, 2010
Montreal, Quebec, Canada
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-4948-4
PROCEEDINGS PAPER
Electrostatic and Capillary Effects on the Detachment of Particles With Surface Deformation in Turbulent Flows
Goodarz Ahmadi
Goodarz Ahmadi
Clarkson University, Potsdam, NY
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Xinyu Zhang
Clarkson University, Potsdam, NY
Goodarz Ahmadi
Clarkson University, Potsdam, NY
Paper No:
FEDSM-ICNMM2010-30069, pp. 43-50; 8 pages
Published Online:
March 1, 2011
Citation
Zhang, X, & Ahmadi, G. "Electrostatic and Capillary Effects on the Detachment of Particles With Surface Deformation in Turbulent Flows." Proceedings of the ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels. ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting: Volume 1, Symposia – Parts A, B, and C. Montreal, Quebec, Canada. August 1–5, 2010. pp. 43-50. ASME. https://doi.org/10.1115/FEDSM-ICNMM2010-30069
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