Flow of a non-Newtonian liquid in the gap between a rotating cylinder and a permeable surface with rotor granulation

The isothermal process of the rotor granulation of a material having the properties of an anomalously viscous non-Newtonian (power-law) liquid is hydrodynamically analyzed for the case of a rotor granulator corresponding to the Gaskell concept for roller processes. Expressions are derived for material flow, matrix permeability, and for both equal and differing working surface velocities. The mathematical models uniquely relate the integral parameters of the process (the required power, tensile force, granulate output) to a dimensionless parameter characterizing the thickness or flow rate of the material at the output. The analysis can be extended to the case of liquid flow in a curvilinear gap between two rotating cylinders, one of which is solid, the other perforated.