@article{oai:tsukuba.repo.nii.ac.jp:00034039, author = {小林, 幹佳 and SUGIMOTO, Takuya and WATANABE, Yuji and KOBAYASHI, Motoyoshi}, journal = {Theoretical and applied mechanics Japan}, month = {}, note = {We investigated the hetero-coagulation rates between oppositely charged particles subjected to a turbulent flow. The turbulent hetero-coagulation was induced by mixing and stirring the aqueous suspensions of positively and negatively charged latex particles. The sign and magnitude of the surface charge densities of the particles were conrmed by the analysis of measured electrophoretic mobilities. The turbulent coagulation experiments were carried out as a function of particle diameter, KCl concentration, and turbulent intensity. The rate of coagulation was obtained by measuring temporal change of suspension turbidity. The experimental results show that the hetero-coagulation rate constant increases with decreasing KCl concentration and with increasing particle size and turbulent intensity. These trends qualitatively agree with the theoretical prediction based on the aggregation kinetics in a turbulent ow combined with a trajectory analysis including the attractive electrostatic interactions. The facilitated coagulation rates in lower KCl concentrations are considered to be due to the increase of the magnitude of attractive electrostatic force accompanied by the development of electrical double layer., 第63回理論応用力学講演会(The 63rd National Congress of Theoretical and Applied Mechanics)における英文論文集}, pages = {133--145}, title = {Kinetics of turbulent hetero-coagulation of oppositely charged colloidal particles}, volume = {63}, year = {2015} }