![]() In the pendular state, the viscosity increased with an increase in the water-phase volume fraction. This change in the microstructure state is qualitatively consistent with the results of previous experimental studies. When the water-phase volume fraction was low, a pendular state was formed, and with an increase in the water-phase volume fraction, the state transitioned into a co-continuous state and a Pickering emulsion. The effects of the water-phase volume fraction and shear rate on the microstructure and apparent viscosity were investigated. Our numerical simulation method was based on a phase-field model for capturing a free interface, the discrete element method for tracking particle motion, the immersed boundary method for calculating fluid-particle interactions, and a wetting model that assigns an order parameter to the solid surface according to the wettability. N2 - We numerically studied the rheological properties and microstructure formation under shear flow in a ternary particle/oil/water dispersion system. This study was supported, in part, by the Japan Society for the Promotion of Science (JSPS) KAKENHI grant numbers 19K05122 and 20K15075. T2 - two-dimensional direct numerical simulation T1 - Effect of liquid volume fraction and shear rate on rheological properties and microstructure formation in ternary particle/oil/water dispersion systems under shear flow This is the first study to numerically demonstrate the microstructure formation of a ternary dispersion under shear flow and its correlation with the apparent viscosity.", It is concluded that this is due to the difference in the manner in which the microstructure changes with the shear rate. In the case of the pendular state, significant shear thinning was observed, but in the case of the Pickering emulsion, no significant shear thinning was observed. This was due to the development of a network structure connected by liquid bridges, and the increase in the coordination number was quantitatively confirmed. This is the first study to numerically demonstrate the microstructure formation of a ternary dispersion under shear flow and its correlation with the apparent viscosity.Ībstract = "We numerically studied the rheological properties and microstructure formation under shear flow in a ternary particle/oil/water dispersion system. ![]() We numerically studied the rheological properties and microstructure formation under shear flow in a ternary particle/oil/water dispersion system. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |