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RESEARCH PAPERS

Heat Transfer from a Cylinder Oscillating in a Cross-Flow

[+] Author and Article Information
U. C. Saxena

General Electric Company, San Jose, Calif.

A. D. K. Laird

Department of Mechanical Engineering, University of California, Berkeley, Calif. 94720

J. Heat Transfer 100(4), 684-689 (Nov 01, 1978) (6 pages) doi:10.1115/1.3450877 History: Received April 19, 1978; Online August 11, 2010

Abstract

This paper presents data on the effects of transverse oscillations on local heat transfer rates from a 7/8 in. (22 mm) diameter vertical circular cylinder, with an internal heater, subjected to cross-flow at a Reynolds number of 3500 in an open water channel during forced oscillations. The amplitude was varied from 0.89 to 1.99 times the diameter of the cylinder and the frequency from 0.4 to 1.2 Hz. The amplitude and frequency contributed about equally to the increases in local heat transfer coefficients. The increases in some cases were up to 60 percent, and were as much as 15 percent larger on the back than on the front of the cylinder. Motion pictures showed that the larger increases generally coincided with the larger flow disturbances that result from wake capture.

Copyright © 1978 by ASME
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