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Optimization of a Convective Rectangular Profile Annular Fin  

강형석 (강원대학교 기계ㆍ메카트로닉스 공학부)
조철현 (강원대학교 기계ㆍ메카트로닉스 공학부)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.7, no.1, 2003 , pp. 1-9 More about this Journal
Abstract
The rectangular profile annular fin with fixed volume is optimized using 2-dimensional analytic method. For a base boundary condition, convection from fluid within the pipe to the inside wall of the pipe and conduction from the inside wall of the pipe to the fin base are considered. Heat loss from the fin tip radius is not ignored. The maximum heat loss, the optimum fin tip radius and the optimum fin half thickness corresponding to the maximum heat loss are presented as a function of fin base radius, Biot number over the fin surface and Biot number within the pipe. Results show 1) the maximum heat loss increases as both Biot number over the fin surface and Biot number within the pipe increase and as fin base radius decreases 2) the optimum fin thickness increases as Biot number within the pipe decreases or as fin base radius and Biot number over the fin surface increase.
Keywords
Optimization; Annular Fin; Heat loss; Biot number;
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