Kinetic theory of shear coagulation for particles in a viscous fluid.
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概要
- 論文の詳細を見る
The coagulation of colloidal particles in a simple shear flow of a viscous fluid is considered. The coagulation rate between unequal spherical particles is calculated by use of approximate trajectory equations, and a kinetic equation of shear coagulation is proposed in which the hydrodynamic interaction between particles is taken into account. It is found that the coagulation rate decreases rapidly with increase of the ratio of particles radius ai/aj and a dimensionless quantity 6πμa3ijγ/A. Comparison between the present theory and the classical Smoluchowski theory indicates that the Smoluchowski theory is applicable to limited coagulation systems and that it overestimates the coagulation rate considerably when applied to common aqueous dispersions. It is also found that the change of particle concentration is conveniently estimated by a kinetic equation in which the coagulation rate between unequal particles is approximated by that between equal spheres.
- 公益社団法人 化学工学会の論文
著者
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MATSUNO YOSHIZO
Department of Applied Chemistry, Kyushu Institute of Technology
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Higashitani Ko
Department Of Applied Chemistry Kyushu Institute Of Technology
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HOSOKAWA GIJIRO
Department of Environmental Engineering, Kyushu Institute of Technology
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OGAWA RYUJI
Department of Environmental Engineering, Kyushu Institute of Technology
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