https://scholars.lib.ntu.edu.tw/handle/123456789/408252
Title: | Multi-parameters optimization for microchannel heat sink using inverse problem method | Authors: | Wang Z.-H. Wang X.-D. Yan W.-M. Duan Y.-Y. Lee D.-J. Xu J.-L. |
Keywords: | Heat sink;Inverse geometry design;Micro-channel;Optimization | Issue Date: | 2011 | Journal Volume: | 54 | Journal Issue: | 13-14 | Start page/Pages: | 2811-2819 | Source: | International Journal of Heat and Mass Transfer | Abstract: | This work describes an inverse problem method to optimize the geometric design for microchannel heat sinks using a novel multi-parameter optimization approach, which integrates the simplified conjugate-gradient scheme and a fully developing three-dimensional heat transfer and flow model. Overall thermal resistance is the objective function to be minimized with number of channels, N, channel aspect ratio, £\, and the ratio of channel width to pitch, £], as search variables. With a constant bottom area (10 mm ¡Ñ 10 mm), constant heat flux applied to the heat sink bottom surface (100 W cm -2), and constant pumping power (0.05 W), the optimal design values are N = 71, £\ = 8.24, and £] = 0.6, with a minimum overall thermal resistance of 0.144 K W-1. Increasing pumping power reduces overall thermal resistance of the optimal design; however, the design's effectiveness declines significantly under high pumping power. The N and £\ values in the optimal design increase and £] decreases as pumping power increases. ? 2010 Elsevier B.V. All rights reserved. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/408252 | ISSN: | 00179310 | DOI: | 10.1016/j.ijheatmasstransfer.2011.01.029 |
Appears in Collections: | 化學工程學系 |
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