Scaling law for the viscoelasticity-induced particle migration in stirred vessels

In this study, we investigate the viscoelasticity-induced migration of solid particles immerged in three-dimensional flow field created by rotation a Rushton turbine. At same time, propose scaling law for predicting characteristic particle time as function Weissenberg number. Particle image velocimetry is adopted to reconstruct velocity and deformation rate fields generated turbine both Newtonian viscoelastic fluids; concurrently, tracking used measure evolution distribution tank. The experimental campaign shows that essentially bi-dimensional confined r-θ plane. Accordingly, migrate only radial direction driven presence gradients shear on Finally, validated against data obtained at different numbers, impeller diameters fluid compositions. results show good agreement between data.