Behavior of Thermally Radiating Tree-like Fins

Author:

Calamas David1,Baker John2

Affiliation:

1. Research Assistant e-mail:

2. Professor ASME Member e-mail:  Department of Mechanical Engineering, University of Alabama, 290 Hardaway Hall, 7th Avenue, Tuscaloosa, AL 35487

Abstract

The performance of tree-like fins with varying bifurcation angle, surface emissivity, material, width-to-thickness ratio, and base heat rate was examined. Overall system performance was examined computationally. The computational results have been validated, verified, and cast in terms of commonly defined dimensionless parameters. Tree-like fins were found to be more effective and more efficient than the rectangular fins. Fin efficiency and effectiveness were found to increase with increasing bifurcation angles while base temperatures were found to decrease with increasing bifurcation angles. As expected, base temperatures were highest for the largest width-to-thickness ratios and smallest for materials with relatively higher thermal conductivities.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Reference54 articles.

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2. A Variational Problem Relating to Cooling Fins;J. Math. Mech.,1962

3. A Variational Problem With Applications to Cooling Fins;J. Soc. Ind. Appl. Mech.,1962

4. Mackay, D. B., and Leventhal, E. L., 1960, “Radiant Heat Transfer From a Flat Plate Uniformly Heated Along the Edge,” AIChE 4th National Heat Transfer Conference, New York.

5. Minimum-Mass Thin Fins which Transfer Heat Only by Radiation to Surroundings at Absolute Zero;J. Soc. Ind. Appl. Math.,1960

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