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首页> 外文期刊>International Journal of Heat and Mass Transfer >Effects of half spherical bulges on heat transfer characteristics of CPU cooled by TiO_2-water nanofluids
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Effects of half spherical bulges on heat transfer characteristics of CPU cooled by TiO_2-water nanofluids

机译：半球形凸起对TiO_2-水纳米流体冷却的CPU传热特性的影响

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摘要

TiO2-water nanofluids are prepared by a two-step method, and the stabilities of nanofluids are studied by sedimentation observation method and transmittance method respectively. Related experimental system for studying the heat transfer characteristics of CPU cooled by nanofluids is established, and the reliability of the experimental system is researched. The heat transfer and flow characteristics of CPU cooled by TiO2-water nanofluids are experimentally investigated. The effects of half spherical bulges arrangement modes (aligned and staggered arrangement) on the heat transfer enhancement of CPU are discussed. It is found that the surface temperatures of CPU cooled by nanofluids with aligned arrangement and staggered arrangement can be reduced by 10.5% and 12.5% at best compared with base fluid respectively. Also, the effects of nanoparticle mass fractions (omega = 0.1%, 0.2%, 0.3%, 0.4% and 0.5%) and Reynolds numbers (Re = 98, 185, 274, 323, 365, 400, 478, and 548) on the thermo-hydraulic performances are analyzed. It is found that nanofluids with omega = 0.4% show the best heat transfer performance, and the arrangement model and nanoparticle mass fraction have little effect on the resistance coefficient at high Reynolds number (Re 365). Lastly, the comprehensive performances of nanofluids in the CPU are investigated. (C) 2018 Elsevier Ltd. All rights reserved.
机译：通过两步法制备了TiO2-水纳米流体，并分别通过沉降观察法和透射率法研究了纳米流体的稳定性。建立了研究纳米流体冷却的CPU传热特性的相关实验系统，并研究了实验系统的可靠性。实验研究了TiO2-水纳米流体冷却的CPU的传热和流动特性。讨论了半球形凸起排列方式（对齐和交错排列）对CPU传热的影响。结果发现，与基础流体相比，采用排列排列和交错排列的纳米流体冷却的CPU的表面温度分别最多可以降低10.5％和12.5％。同样，纳米粒子质量分数（ω= 0.1％，0.2％，0.3％，0.4％和0.5％）和雷诺数（Re = 98、185、274、323、365、400、478和548）的影响分析了热工液压性能。发现ω= 0.4％的纳米流体表现出最佳的传热性能，并且在高雷诺数（Re> 365）下，排列模型和纳米颗粒质量分数对电阻系数的影响很小。最后，研究了纳米流体在CPU中的综合性能。 （C）2018 Elsevier Ltd.保留所有权利。

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  • 来源
  • 作者

    Qi Cong; Zhao Ning; Cui Xin; Chen Tiantian; Hu Jinding;

  • 作者单位

    China Univ Min & Technol, Sch Elect & Power Engn, Xuzhou 221116, Jiangsu, Peoples R China;

    China Univ Min & Technol, Sch Elect & Power Engn, Xuzhou 221116, Jiangsu, Peoples R China;

    China Univ Min & Technol, Sch Elect & Power Engn, Xuzhou 221116, Jiangsu, Peoples R China;

    China Univ Min & Technol, Sch Elect & Power Engn, Xuzhou 221116, Jiangsu, Peoples R China;

    China Univ Min & Technol, Sch Elect & Power Engn, Xuzhou 221116, Jiangsu, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Nanofluids; CPU; Thermo-hydraulic performance; Half spherical bulge;

    机译：纳米流体;CPU;热工性能;半球形凸起;

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