Flow Characteristics in a Baffled Chamber of Cylindrical Dynamic Filter without Permeation or Throughflow

Abstract

Baffle effects on the Taylor vortex flow and the rotor torque were studied experimetally in the chamber of a cylindrical dynamic filter. The Taylor vortex occured mainly in the annular space between the rotating cylinder and the baffles. Empirical correlations using the critical Reynolds number, the wave length of the vortex, and the frictional coefficient of the rotor were proposed as individual functions of those under nonbaffle conditions and a newly defined clearance ratio. It is suggested that the baffles in the dynamic filter chamber cause a high liquid shear sufficient to sweep filter cake from the inner cylindrical medium.