FLOW-INDUCED BY AN IMPELLER IN AN UNBAFFLED TANK .2. NUMERICAL MODELING

Experimental data for the Row induced by an impeller in a cylindrical tank were presented and analyzed in Part I (Dong et al., 1994, Chem. Engng Sci. 49, 549-560). In Part II, a Coriolis computer model is developed and employed to predict Row characteristics in a 3D calculation in conjunction with the standard k-epsilon turbulence model. The computer model involves a coordinate transformation in which the computational coordinates rotate with the impeller, allowing the impeller to be treated as a stationary blade in a rotating tank. Mean velocities and turbulent energy in the bulk liquid predicted by the computer model are observed to be in satisfactory agreement with the measurements. The main discrepancies between the prediction and the experimental data are analyzed.