| 液冷式CPU散热器的传热强化及流阻性能 |
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| 引用本文： | 孙滔,高学农,欧阳灿,唐亚男. 液冷式CPU散热器的传热强化及流阻性能[J]. 流体机械, 2011, 39(1). DOI: 10.3969/j.issn.1005-0329.2011.01.016 |
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| 作者姓名： | 孙滔 高学农 欧阳灿 唐亚男 |
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| 作者单位： | 华南理工大学传热强化与过程节能教育部重点实验室,广东广州,510640 |
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| 基金项目： | 国家自然科学基金资助项目(20976056) |
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| 摘 要： | 通过在液冷式CPU散热器蛇形流道内填充不同粒径的不锈钢珠,使液冷式CPU散热器流道形成类似多孔介质的复杂流道以提高其散热性能。通过对改进前后液冷式CPU散热器的试验研究,分析了各因素对液冷式CPU散热器的传热和流阻性能的影响规律。结果表明:在本试验范围内,相同Re和Pr下,改进后散热器的对流换热系数为改进前的1.2~4.8倍,阻力系数f是改进前的1.4~4倍;散热器填充Φ4mm开孔不锈钢珠的强化传热效果最佳,芯片表面温度较填充前降低了33,°对流换热系数增大4.8倍,而流动阻力仅增加了1.4倍。
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| 关 键 词： | 散热器 不锈钢珠 多孔介质 传热强化 流动阻力 |
Research on Heat Transfer and Flow Performance of Liquid Cooling Heat Sink for CPU |
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| SUN Tao,GAO Xue-nong,OU Yang-can,TANG Ya-nan. Research on Heat Transfer and Flow Performance of Liquid Cooling Heat Sink for CPU[J]. Fluid Machinery, 2011, 39(1). DOI: 10.3969/j.issn.1005-0329.2011.01.016 |
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| Authors: | SUN Tao GAO Xue-nong OU Yang-can TANG Ya-nan |
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| Affiliation: | SUN Tao,GAO Xue-nong,OU Yang-can,TANG Ya-nan(Key Lab.of Enhanced Heat Transfer and Energy Conservation of the Ministry of Education,South China University of Technology,Guangzhou 510640,China) |
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| Abstract: | Based on the mechanism of heat transfer enhancement inside porous media,one kind of water cooling heat sink is changed to be a packed heat sink by filling the flow channel with various stainless steel beads.The overall performance of packed heat sinks is compared with that of unpacked heat sink under the same pump power.The results showed that: Over the range of Reynolds number and Prandtl in the experiment,When the Reynolds number and Prandtl are the same,the convective heat transfer coefficient of packed ... |
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| Keywords: | heat sink stainless steel beads porous media heat transfer enhancement flow resistance |
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