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RESEARCH PAPERS

An Experimental Study of Natural Convection in a Toroidal Loop

[+] Author and Article Information
C. H. Stern

Department of Mechanical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061

R. Greif, J. A. C. Humphrey

Department of Mechanical Engineering, University of California, Berkeley, Berkeley, CA 94720

J. Heat Transfer 110(4a), 877-884 (Nov 01, 1988) (8 pages) doi:10.1115/1.3250588 History: Received September 17, 1987; Online October 20, 2009

Abstract

Velocity and temperature profiles were measured at the entrance and exit to the heating section of a toroidal thermosyphon loop operating under steady flow conditions for a range of heat inputs. Velocity measurements were made with a laser-Doppler velocimeter and temperature measurements with a small thermocouple probe. Detailed results are presented for the longitudinal and circumferential components of the velocity for four heat inputs. The data for cross-stream secondary flows and streamwise flow reversals emphasize the importance of including three-dimensional effects in analyses of these systems.

Copyright © 1988 by ASME
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