Direct Numerical Simulations of Charged Colloidal Dispersions-Basis and Usage of KAPSEL-

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  • 荷電コロイド分散系の直接数値シミュレーション―ＫＡＰＳＥＬの原理と操作―
  • カデン コロイド ブンサンケイ ノ チョクセツ スウチ シミュレーション KAPSEL ノ ゲンリ ト ソウサ
  • Basis and Usage of KAPSEL
  • KAPSELの原理と操作

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Abstract

We have released a colloid simulator named KAPSEL implemented the “Smoothed Profile (SP) method” for direct numerical simulations of particulate flow. KAPSEL computes the fluid velocity and the electrostatics potential by solving both Navier-Stokes and Poisson equations directly. The time evolutions of the colloidal particles and the density of counter ions are then determined by solving Newton's equation of motion and advection-diffusion equation, respectively, in a consistent manner so that the electro-hydrodynamic coupling can be fully taken into account. The electrophoretic mobility of spherical colloidal particles is calculated in several situations including those in concentrated dispersions. The comparisons with theories show excellent quantitative agreements.

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