Convective diffusion of particles deposition under electrostatics from turbulently-mixed conditions

A.C.K. Lai; Ching Man Yu; F. Chen

doi:10.1016/j.ces.2004.04.024

Convective diffusion of particles deposition under electrostatics from turbulently-mixed conditions

A.C.K. Lai, Ching Man Yu, F. Chen

Research output: Journal article publication › Journal article › Academic research › peer-review

5 Citations (Scopus)

Abstract

A theoretical model is presented to describe inertialess particle deposition onto smooth surfaces under the influence of electrostatic force. Both Boltzmann and combined diffusion and field charging mechanisms are investigated. A modified Fick's law equation accounting for Brownian and turbulent diffusion, spatially-independent external force, i.e. gravitational and Coulombic force, is presented based on the simplified three-layer model. The results show that the concentration boundary layer thickness is very thin and the previous three-layer model can be further simplified. The Coulombic force influences the particle deposition significantly and for considerably high charge and electric field, deposition is independent on turbulent intensity. The model predictions agree very well with the literature DNS results. © 2004 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	2929-2936
Number of pages	8
Journal	Chemical Engineering Science
Volume	59
Issue number	14
DOIs	https://doi.org/10.1016/j.ces.2004.04.024
Publication status	Published - 1 Jul 2004
Externally published	Yes

Keywords

Electrophoresis
Fluid mechanics
Mathematical modeling
Particle
Transport processes

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Industrial and Manufacturing Engineering
Applied Mathematics

More information

10.1016/j.ces.2004.04.024

Cite this

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title = "Convective diffusion of particles deposition under electrostatics from turbulently-mixed conditions",

abstract = "A theoretical model is presented to describe inertialess particle deposition onto smooth surfaces under the influence of electrostatic force. Both Boltzmann and combined diffusion and field charging mechanisms are investigated. A modified Fick's law equation accounting for Brownian and turbulent diffusion, spatially-independent external force, i.e. gravitational and Coulombic force, is presented based on the simplified three-layer model. The results show that the concentration boundary layer thickness is very thin and the previous three-layer model can be further simplified. The Coulombic force influences the particle deposition significantly and for considerably high charge and electric field, deposition is independent on turbulent intensity. The model predictions agree very well with the literature DNS results. {\textcopyright} 2004 Elsevier Ltd. All rights reserved.",

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author = "A.C.K. Lai and Yu, {Ching Man} and F. Chen",

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AU - Lai, A.C.K.

AU - Yu, Ching Man

AU - Chen, F.

PY - 2004/7/1

Y1 - 2004/7/1

N2 - A theoretical model is presented to describe inertialess particle deposition onto smooth surfaces under the influence of electrostatic force. Both Boltzmann and combined diffusion and field charging mechanisms are investigated. A modified Fick's law equation accounting for Brownian and turbulent diffusion, spatially-independent external force, i.e. gravitational and Coulombic force, is presented based on the simplified three-layer model. The results show that the concentration boundary layer thickness is very thin and the previous three-layer model can be further simplified. The Coulombic force influences the particle deposition significantly and for considerably high charge and electric field, deposition is independent on turbulent intensity. The model predictions agree very well with the literature DNS results. © 2004 Elsevier Ltd. All rights reserved.

AB - A theoretical model is presented to describe inertialess particle deposition onto smooth surfaces under the influence of electrostatic force. Both Boltzmann and combined diffusion and field charging mechanisms are investigated. A modified Fick's law equation accounting for Brownian and turbulent diffusion, spatially-independent external force, i.e. gravitational and Coulombic force, is presented based on the simplified three-layer model. The results show that the concentration boundary layer thickness is very thin and the previous three-layer model can be further simplified. The Coulombic force influences the particle deposition significantly and for considerably high charge and electric field, deposition is independent on turbulent intensity. The model predictions agree very well with the literature DNS results. © 2004 Elsevier Ltd. All rights reserved.

KW - Electrophoresis

KW - Fluid mechanics

KW - Mathematical modeling

KW - Particle

KW - Transport processes

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DO - 10.1016/j.ces.2004.04.024

M3 - Journal article

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VL - 59

SP - 2929

EP - 2936

JO - Chemical Engineering Science

JF - Chemical Engineering Science

IS - 14

ER -

Convective diffusion of particles deposition under electrostatics from turbulently-mixed conditions

Abstract

Keywords

ASJC Scopus subject areas

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