1424 浸透圧に起因する管路流れと電荷の影響(S30-5 複雑流体の流動現象(5),S30 複雑流体の流動現象)

概要

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In order to analyze the electrical charge effect on the transport property of microvessel walls, we have constructed an electrostatic model for osmotic flow across a membrane. The osmotic flow is modelled as electrolyte streams suspending charged solutes through charged pores of the membrane. The electrostatic field in the pore, which is governed by the Poisson-Boltzmann equation under the condition of electrical neutrality, was obtained using a spectral element method. The osmotic reflection coefficient was evaluated from the interaction energy between surface charges. We conclude that the osmotic flow could be largely affected by the electrostatic interaction, i.e. the amount of the surface charges, the ion concentration level of the fluid and the size ratio of the solute to the pore. Ion concentration level decreases with the increase of the radius of the pore, under the constant flux rate.
社団法人日本機械学会の論文
2007-09-07