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Technical Briefs

Optimization of a Pin Fin With Variable Base Thickness

[+] Author and Article Information
H. S. Kang

Department of Mechanical Engineering, Kangwon National University, Chuncheon 200-701, Koreahkang@kangwon.ac.kr

J. Heat Transfer 132(3), 034501 (Dec 23, 2009) (4 pages) doi:10.1115/1.4000048 History: Received January 15, 2009; Revised July 07, 2009; Published December 23, 2009; Online December 23, 2009

A pin fin with variable fin base thickness is optimized using a two-dimensional analytic method. The values of the inner wall temperature and fin volume are given as constants. The fin base temperature varies with variation in the fin base thickness, fin outer radius, fin length, and convection characteristic number. Under these conditions, the optimum heat loss, the corresponding optimum fin effectiveness, fin length, and fin outer radius are presented as functions of the fin base thickness, fin volume, and convection characteristic number. One of the results shows that both the optimum heat loss and optimum fin length decrease linearly with increase in the fin base thickness.

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Figures

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Figure 1

Schematic diagram of a cylindrical pin fin

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Figure 2

Optimum values versus the fin base thickness for V=0.3

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Figure 3

Optimum values versus the fin volume for Lb=0.1

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Figure 4

Optimum values versus the convection characteristic number for Lb=0.1

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