Flow between rotating disks. Part 1: Basic flow
Abstract
Multiplicity of basic flows, when the fluid is bounded by two infinite disks, reported by several investigators is examined with emphasis on whether, and under what conditions infinite disk flows approximate to laboratory flows between two finite disks. Laser Doppler velocity measurements were obtained in water between finite rotating disks, with and without through flow. Angular velocity ratios were studied for: (1) one disk rotating and the other stationary; (2) corotating disks of equal angular velocity; and (3) counter rotating disks of equal but opposite angular velocity. It is concluded that limiting flows are unique and are independent of flow history. With one disk rotating and the other stationary, the midradius limiting flow is recognized as the Batchelor profile of infinite disk theory. Other profiles, predicted by this theory to coexist with the Batchelor profile were neither observed experimentally nor were they calculated numerically by the finite disk solution obtained with a Galerkin, bspline formulation.
 Publication:

Abstracts of the 20th Annual Meeting, Society of Engineering Science, Inc.
 Pub Date:
 1983
 Bibcode:
 1983sesi.meet..114S
 Keywords:

 Computational Fluid Dynamics;
 Flow Velocity;
 Fluid Flow;
 Rotating Disks;
 Boundary Layers;
 Counter Rotation;
 Galerkin Method;
 Laser Doppler Velocimeters;
 Radial Velocity;
 Reynolds Number;
 Fluid Mechanics and Heat Transfer