金属泡沫微流道热沉内流体流动与传热特性的数值研究

李勇铜; 徐会金; 巩亮; 张克舫

doi:10.3879/j.issn.1000-0887.2014.03.007

金属泡沫微流道热沉内流体流动与传热特性的数值研究

doi: 10.3879/j.issn.1000-0887.2014.03.007

中国石油大学(华东) 储运与建筑工程学院热能与动力工程系, 山东青岛 266580

基金项目: 国家自然科学基金（51206187）；山东省自然科学基金(ZR2012EEQ022)

详细信息

作者简介:
李勇铜（1991—），男，宁夏固原人，硕士生(E-mail: lyt0903@163.com)

中图分类号: TK124
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- 被引次数: 0
出版历程
- 收稿日期: 2013-11-01
- 修回日期: 2014-01-20
- 刊出日期: 2014-03-15

Numerical Study of Fluid Flow and Heat Transfer Characteristics in Metal-Foam Filled Microchannel Heat Sink

Department of Thermal Energy & Power Engineering, College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao, Shandong 266580, P.R.China

Funds: The National Natural Science Foundation of China（51206187）

摘要

摘要: 为改善高能量密度电子设备的冷却效率，提出了在微流道热沉内填充金属泡沫的新型热沉结构，并数值研究了金属泡沫的孔隙率、孔密度、材质（铜、镍及铝）、流体工质（水、乙二醇及纳米流体）等相关参数对微流道流动与换热特性的影响．研究结果表明：金属泡沫可以显著地强化微流道热沉的换热特性；添加金属泡沫后微流道热沉的换热性能可提高2倍以上；采用纳米流体与金属泡沫相结合的双重强化换热手段可以进一步地增强微流道热沉的冷却能力；在层流流动状态下金属泡沫微流道热沉可以对发热量为200 W/cm²的电子设备进行有效地冷却，表明其在高功率密度电子设备热管理领域具有广阔的应用前景.
- 金属泡沫 /
- 微流道热沉 /
- 电子设备热管理 /
- 纳米流体 /
- 流动与换热
Abstract: A novel structure of metal-foam filled microchannel heat sink was proposed for electronics cooling applications. Effects of the main parameters, such as porosity, pore density, metal foam materials (copper, nickel and aluminum) and coolants (water, ethylene glycol and nanofluid), were numerically studied to predict the pressure drop and heat transfer performance of laminar flow in the heat sink. The results show that the thermal performance of the microchannel heat sink is enhanced over twice after filling-in of metal foam, and it is also positive for the heat transfer efficiency to employ nanofluid as coolant. The results also show that the microchannel heat sink filled with metal foam is well qualified for cooling chips with heat flux of 200 W/cm^2, which means that it has great potential for thermal management of electronics devices with high power density.
- metal-foam /
- microchannel heat sink /
- thermal management of electronic device /
- nanofluid /
- flow and heat transfer

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