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Optimal Design of a Heat Sink using the Sequential Approximate Optimization Algorithm  

Park Kyoungwoo (한양대학교 최적설계신기술연구센터)
Choi Dong-Hoon (한양대학교 최적설계신기술연구센터)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.16, no.12, 2004 , pp. 1156-1166 More about this Journal
Abstract
The shape of plate-fin type heat sink is numerically optimized to acquire the minimum pressure drop under the required temperature rise. In constrained nonlinear optimization problems of thermal/fluid systems, three fundamental difficulties such as high computational cost for function evaluations (i.e., pressure drop and thermal resistance), the absence of design sensitivity information, and the occurrence of numerical noise are commonly confronted. Thus, a sequential approximate optimization (SAO) algorithm has been introduced because it is very hard to obtain the optimal solutions of fluid/thermal systems by means of gradient-based optimization techniques. In this study, the progressive quadratic response surface method (PQRSM) based on the trust region algorithm, which is one of sequential approximate optimization algorithms, is used for optimization and the heat sink is optimized by combining it with the computational fluid dynamics (CFD).
Keywords
Optimal design; Heat sink; Thermal stability; CFD; PQRSM;
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