Journal
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
Volume 78, Issue -, Pages 158-168Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ijthermalsci.2013.12.009
Keywords
Double-layer microchannel heat sink; Optimization; Simplified conjugate-gradient method; Global thermal resistance; Cooling
Categories
Funding
- National Natural Science Foundation of China [51176010]
- 111 Project [B12034]
- Program for New Century Excellent Talents in University [NCET-11-0635]
- Fundamental Research Funds for the Central Universities [12ZX12]
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A three-dimensional solid fluid conjugated model is coupled with a simplified conjugate-gradient method to optimize the flow and heat transfer in a water-cooled, silicon-based double-layer microchannel heat sink (MCHS). Six design variables: channel number, bottom channel height, vertical rib width, thicknesses of two horizontal ribs, and coolant velocity in the bottom channel are optimized simultaneously to search for a minimum of global thermal resistance. The optimal design variables are obtained at fixed pumping powers, coolant volumetric flow rates, and pressure drops through the MCHS, respectively. The dependences of design variables on the increased pumping power, volumetric flow rate, and pressure drop are discussed. Although the combined optimization is proven effective only for the double-layer MCHS with a specific dimension, it is expected that the proposed design strategy provide a valuable guide for the practical double-layer MCHS design. (C) 2013 Elsevier Masson SAS. All rights reserved.
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