Measurement of Free Convection Velocity Field around the Periphery of a Horizontal Torus

[+] Author and Article Information
T. Aihara

Institute of High Speed Mechanics, Tohoku University, Sendai, Japan

E. Saito

Department of Mechanical Engineering, Iwate University, Morioka, Japan

J. Heat Transfer 94(1), 95-98 (Feb 01, 1972) (4 pages) doi:10.1115/1.3449879 History: Received December 29, 1970; Online August 11, 2010


Free convection velocity fields around the peripheries of horizontal tori in air have been measured for diameter ratios of 0.5, 0.3, and 0 (a cylinder) by utilizing the trajectories of fine zinc stearate particles. The induced flow through the torus opening and the curvature of the great circle were found to influence the velocity profiles and the location of the upper and lower stagnation points. Experimental profiles for tori are compared with theoretical results for cylinders and spheres proposed by others.

Copyright © 1972 by ASME
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