Direct numerical simulations of electrophoresis of charged colloids

Kang Kim, Yasuya Nakayama, Ryoichi Yamamoto

Research output: Contribution to journalArticle

86 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

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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