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RESEARCH PAPERS

Directional Control of Radiation Heat Transfer by V-Groove Cavities—Collimation of Energy in Direction Normal to Cavity Opening

[+] Author and Article Information
H. Masuda

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

J. Heat Transfer 102(3), 563-567 (Aug 01, 1980) (5 pages) doi:10.1115/1.3244341 History: Received September 24, 1979; Online October 20, 2009

Abstract

To improve the V-groove cavity devised for directional control of radiation heat transfer, a new model with a black fin provided on the cavity base is proposed. The radiative characteristics of the new model are theoretically offered comparing two typical constitutional forms—symmetrical and asymmetrical. It is evident that the fin helps accelerate radiation heat transfer from the V-groove and promote its collimation. The effects can be further enhanced by carefully choosing the various geometrical parameters. The new V-groove cavity proposed would probably be evaluated as a favorable directional surface. The direction of energy collimation can be altered by using the asymmetrical groove cavity.

Copyright © 1980 by ASME
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