Secondary Flows Associated With Slowly Oscillating and Rotating Disks

[+] Author and Article Information
R. J. Hanold

Los Alamos Scientific Laboratory, Los Alamos, N. Mex.

J. R. Moszynski

Case Institute of Technology, Cleveland, Ohio

J. Heat Transfer 89(2), 177-184 (May 01, 1967) (8 pages) doi:10.1115/1.3614349 History: Received June 03, 1966; Online August 25, 2011


This investigation concerns the application of a flow visualization technique to obtain a quantitative and qualitative description of the secondary flow associated with a slowly oscillating disk. Included in the description is a systematic study of the flow behavior as a function of the Reynolds number. The three-dimensional character of the flow is verified and the development of a toroidal vortex both above and below the oscillating disk is illustrated. The experiments are performed in a vessel similar in design to a typical oscillating body viscometer. The effect of the Reynolds number on the damping rate of the disk is investigated. The influence of natural convective flows on the magnitude and reproducibility of the damping rate is obtained. The development of a secondary flow in the form of a toroidal vortex for both the rotating disk and rotating sphere is also illustrated.

Copyright © 1967 by ASME
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