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RESEARCH PAPERS: Forced Convection

Heat Transfer From an Asymmetrically Heated Channel Partially Enclosing a Rotating Disk

[+] Author and Article Information
R. R. Schmidt

Large Scale Computing Division, IBM Corporation, Poughkeepsie, NY 12601

P. Patel

New Jersey Institute of Technology, Newark, NJ 07102

J. Heat Transfer 117(1), 79-84 (Feb 01, 1995) (6 pages) doi:10.1115/1.2822326 History: Received April 01, 1993; Revised November 01, 1993; Online December 05, 2007

Abstract

Experiments have been performed to determine the heat transfer from an asymmetrically heated channel partially enclosing a vertically oriented rotating disk. Parallel rectangular surfaces enclose the rear portion of a disk (slightly less than 1/2 of the disk is enclosed) allowing air to enter and exit the perimeter of the channel, except the rear vertical portion bridging the two parallel surfaces. The experiments encompassed data runs where one of the parallel walls was isothermal and the other was adiabatic. The experiments encompassed a range of spacings between the rotating disk and the adjacent parallel surfaces and a range of rotational speeds varying by a factor of 30. The experiments were performed using the naphthalene sublimation technique. From the experimental results a dimensionless correlation equation suitable for predicting average heat and mass transfer coefficients of the enclosing surfaces for various rotational Reynolds numbers and disk-to-wall spacings was deduced. Finally, to gain some insight into the air flow pattern along the enclosing walls, a visual flow technique was employed, the results of which will be described herein.

Copyright © 1995 by The American Society of Mechanical Engineers
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