Direct numerical simulations of electrophoresis of charged colloids

Kang Kim, Yasuya Nakayama, Ryoichi Yamamoto

Research output: Contribution to journalArticle

83 Citations (Scopus)

Abstract

We propose a numerical method to simulate electrohydrodynamic phenomena in charged colloidal dispersions. This method enables us to compute the time evolutions of colloidal particles, ions, and host fluids simultaneously by solving Newton, advection-diffusion, and Navier-Stokes equations so that the electrohydrodynamic couplings can be fully taken into account. The electrophoretic mobilities of charged spherical particles are calculated in several situations. The comparisons with approximation theories show quantitative agreements for dilute dispersions without any empirical parameters; however, our simulation predicts notable deviations in the case of dense dispersions.

Original languageEnglish
Article number208302
JournalPhysical Review Letters
Volume96
Issue number20
DOIs
Publication statusPublished - Jun 5 2006

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electrophoresis
direct numerical simulation
colloids
electrohydrodynamics
advection
Navier-Stokes equation
newton
deviation
fluids
approximation
ions
simulation

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Direct numerical simulations of electrophoresis of charged colloids. / Kim, Kang; Nakayama, Yasuya; Yamamoto, Ryoichi.

In: Physical Review Letters, Vol. 96, No. 20, 208302, 05.06.2006.

Research output: Contribution to journalArticle

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