Three-Dimensional Computations of the Motion of a Newtonian Drop Rising through Immiscible Quiescent Shear-Thinning Liquids
Three-dimensional direct numerical simulations of the motion of a Newtonian drop rising in Carreau–Yasuda model fluids were carried out by a coupled level-set/volume-of-fluid (CLSVOF) method. Our numerical approach simulated faithfully the physical shear-thinning properties and 3D-nonlinear dynamics that are observed in experiments. Three-dimensional computational results showed that the local change in viscosity around a drop greatly depended on the drop shape and the shear-thinning properties of the quiescent liquid. We quantitatively considered the drop rise motion based on the modified dimensionless numbers (<I>Re</I><SUB>M</SUB> and <I>M</I><SUB>M</SUB>) and the effective viscosity.
- Journal of chemical engineering of Japan
Journal of chemical engineering of Japan 39(4), 394-400, 2006-04-01
The Society of Chemical Engineers, Japan