Hydrodynamics of a Viscous Fluid Pressed-out (or Drawn-in) by Bounding Wall : The 4th Report, Radial Flow between Circular Plates with Central Pipe

Abstract

As an application of the basic equation in the 1st Report, the radial flow of a viscous fluid has been treated, with special reference to the flow between two circular discs, one of which is connected to the circular pipe at the central part. Since the dynamic terms involoing the square of the velocity have been neglected, the conclusions are contrasted to those for the flow of a perfect fluid. (1) The pressure inside becomes higher or lower than that outside, according as the flow is radially outward or inward, and it is more noticable in inner part. (2) If the plate rotates and the centrifugal pressure is induced, the mean pressure inside becomes lower than that outside, even when the flow is radially outward, the critical condition for which has feen decided.