期刊
NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
卷 64, 期 1, 页码 30-55出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/10407782.2013.773811
关键词
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资金
- NPU Foundation for Fundamental Research [NPU-FFR-JC201031]
- NPU Foundation for Ao-xiang Star Program
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20116102120021]
- National Natural Science Foundation of China [10925212]
Applications of microchannel heat sinks for dissipating heat loads have received great attention. Wavy channels are recognized to be an alternative cooling technology to enhance the heat transfer, and are successfully applied in heat exchangers. In this article, three kinds of liquid-cooling double-layer microchannel heat sinks, such as a rectangular straight microchannel heat sink, a parallel-flow wavy microchannel heat sink, and a counter-flow double-layer wavy microchannel heat sink, have been designed and the corresponding laminar flow and heat transfer have been investigated numerically. The effects of the wave amplitude and volumetric flow ratio on heat transfer, pressure drop, and thermal resistance are also observed. Results show that the counter-flow double-layer wavy microchannel heat sink is superior at a larger flow rate, and a more uniform temperature rise is achieved. For a slightly larger flow rate, the parallel flow layout shows better performance. In addition to the overall thermal resistance, other criteria for evaluation of the overall thermal performance, e.g., (Nu/Nu(0))/(f/f(0)) and (Nu/Nu(0))/(f/f(0))(1/3), are applied and similar results are obtained.
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