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TECHNICAL PAPERS

A CFD Application to Optimize T-Shaped Fins: Comparisons to the Constructal Theory’s Results

[+] Author and Article Information
Giulio Lorenzini1

Department of Agricultural Economics and Engineering,  Alma Mater Studiorum-University of Bologna, viale Fanin no. 50, 40127 Bologna, Italygiulio.lorenzini@unibo.it

Simone Moretti

Department of Agricultural Economics and Engineering,  Alma Mater Studiorum-University of Bologna, viale Fanin no. 50, 40127 Bologna, Italy

1

Corresponding author.

J. Electron. Packag 129(3), 324-327 (Aug 31, 2006) (4 pages) doi:10.1115/1.2756852 History: Received June 08, 2006; Revised August 31, 2006

The problem of heat removal in energetic processes represents a big challenge especially because of the enhanced requirements of the modern industry. The thermal exchange systems therefore have to guarantee better performances in correspondence to ever more severe dimensional constraints. This paper shows a numerical approach, based on computational fluid dynamics (CFD) software, for the evaluation of the heat exchange performances of finned (straight fins) surfaces made of highly heat conductive material. The same geometric constraints assumed in a reference work were adopted. This research attempts to develop an easy-to-use method to face what was previously solved by the powerful approach of Bejan’s Constructal theory. The results obtained show a good agreement between CFD and the Constructal theory’s results, validating, therefore, the simplified approach proposed and encouraging its application to a broader variety of geometries.

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Copyright © 2007 by American Society of Mechanical Engineers
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Figures

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Figure 4

Dimensionless conductance as a function of k1 and k2

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Figure 5

Variation of q1* in function of k1

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Figure 6

Variation of q1* in function of a

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Figure 3

Graphic output of the thermal field

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Figure 2

Example of used mesh

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Figure 1

Geometric definition of the model

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